Name: How to work the percentage of any amount instantly @tecmath
Uploaded: 2026-09-19T08:17:00-05:00
Duration: 8 min 17 s
Description: How to work the percentage of any amount instantly

How to work the percentage of any amount instantly

tecmath 2026-09-19 | How to work the percentage of any amount instantly

How to Multiply - Mental Calculation Trick 3

tecmath 2024-04-16 | This math multiplication trick is easy to do, and can be used to directly multiply numbers that star with the same, ot similar tens digits.
Math is easy with the tecmath math method of multiplication (say that five times fast!)

Playlist of mental math youtube.com/playlist?list=PLjbxBzUM6SLmzIG-wy_rKYZYNHdfg9V7P&si=Vr3ykeS_AFJsBy8M

To donate to the tecmath channel:paypal.me/tecmath

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How to Multiply Faster than a Calculator - Fast Math Calculation Trick 2

tecmath 2024-04-03 | This math multiplication trick is easy to do, and can be used to directly multiply numbers in their teens... those moody, occasionally grumpy numbers...
Math is easy with the tecmath math method of multiplication (say that five times fast!)

Playlist of mental math youtube.com/playlist?list=PLjbxBzUM6SLmzIG-wy_rKYZYNHdfg9V7P&si=Vr3ykeS_AFJsBy8M

To donate to the tecmath channel:paypal.me/tecmath

To support tecmath on Patreon: patreon.com/tecmath

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How to Convert Hexadecimal to Decimal

tecmath 2024-03-27 | How to convert hexadecimal to decimal.

Support us on Patreon:
patreon.com/join/tecmath To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU
To support tecmath on Patreon: patreon.com/tecmath
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#dectohex
#converthexadecimal
#hexadecimal

Math Hack to Multiply Instantly

tecmath 2024-03-25 | @tecmath This math multiplication trick is easy to do, and can be used to directly multiply large numbers! Math is easy with the tecmath math method of multiplication (say that five times fast!)

For how this works... go here

youtu.be/nlQk1SixJ6Q

How to Multiply Instantly IN YOUR HEAD! #mathtrick

tecmath 2024-03-24 | @tecmath This math multiplication trick is easy to do, and can be used to directly multiply large numbers! Math is easy with the tecmath math method of multiplication (say that five times fast!)

For how this works... go here

youtu.be/nlQk1SixJ6Q

How to Calculate faster than a Calculator

tecmath 2024-03-22 | @tecmath This math multiplication trick is easy to do, and can be used to directly multiply large numbers! Math is easy with the tecmath math method of multiplication (say that five times fast!)

For how this works... go here

youtu.be/nlQk1SixJ6Q

How to Calculate Fast! - Fast Math Calculation Trick

tecmath 2024-03-20 | This math multiplication trick is easy to do, and can be used to directly multiply large numbers! Math is easy with the tecmath math method of multiplication (say that five times fast!)

Playlist: youtube.com/playlist?list=PLjbxBzUM6SLmzIG-wy_rKYZYNHdfg9V7P&si=Vr3ykeS_AFJsBy8M

To donate to the tecmath channel:paypal.me/tecmath

To support tecmath on Patreon: patreon.com/tecmath

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Decimal to hexadecimal: Example 2

tecmath 2024-03-18 | How to Convert Decimal to hexadecimal example number 2.

For an explanation how to convert decimal to hexadecimal go here:

youtu.be/GePdOJNnaQg

Decimal to Hexadecimal example 1

tecmath 2024-03-16 | How to Convert Decimal to hexadecimal example.

For an explanation how to convert decimal to hexadecimal go here:

youtu.be/GePdOJNnaQg

How to Convert Decimals to Hexadecimal

tecmath 2024-03-12 | How to convert decimal to hexadecimal.

Support us on Patreon:
patreon.com/join/tecmath To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU
To support tecmath on Patreon: patreon.com/tecmath
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#dectohex
#converthexadecimal
#hexadecimal

Integrals and Calculus #mathinstruction #calculus #maths

tecmath 2024-03-11 | Want to know how to do calculus in under 10 minutes?

Follow to here:
youtu.be/aFczzFYjUec

#shorts

Introduction to calculus and integrals

tecmath 2024-03-11 | Calculus and Integrals.

Want more?
youtu.be/aFczzFYjUec

#calculus

How to do Calculus in Under 10 Minutes

tecmath 2024-03-06 | How do you do calculus on under 10 minutes?

In this math lesson we will look at the two things that calculus is used for:
1. Working out the area and volume of curved shapes, and
2. Working out the instantaneous rate of change of a curved function - that is the slope on any point of the curve.

All in under 10 minutes!

To support tecmath on Patreon: patreon.com/tecmath
It really helps and is appreciated!

My YouTube Channel for Hacked (and How to Get your Hacked YouTube Channel Back)

tecmath 2024-01-17 | Russian Hackers stole my YouTube account - but I got it back!
Here's how

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

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How to do Ratios

tecmath 2023-12-22 | What are Ratios?
How do I write two numbers as a ratio?
How to simplify ratios.

All here.

Percentages, Ratios, Conversions....One trick to work them ALL out

tecmath 2023-11-13 | Ratios and proportions, scaling up and down, currency conversions...even percentages - these are easy to do using this easy to apply method.

To support tecmath on Patreon: patreon.com/tecmath
It really helps and is appreciated!

Ratios

tecmath 2023-10-23 | How to do ratios: a basic introduction.
How to set out ratios.
How to simplify ratios.
How to divide up into ratios.

To support tecmath on Patreon: patreon.com/tecmath
It really helps and is appreciated!

Math Tricks for INSTANT Calculation

tecmath 2023-10-17 | This simple math trick can be used to multiply any number by 5, 25 or 125 easily (and instantly!).

To support tecmath on Patreon: patreon.com/tecmath
It really helps and is appreciated!

How to work out percentages INSTANTLY

tecmath 2023-09-05 | Want to work out the percentage of a number?
Want to do percentages in your head?
Want to work out percentages instantly?
This is all about percentages - how to work them out - fast.

To support tecmath on Patreon: patreon.com/tecmath
It really helps and is appreciated!

#percentage #percentages

How to work out speed, distance and time

tecmath 2023-08-28 | How to work out spped distance and time calculations easily.
This shows an easy was to remember all the formulas so you'll be calculating velocity problems no problem!

What is the easiest way to do division?

tecmath 2023-08-21 | Short division is the easiest way to do division with big numbers, as well as when you have remainders. This math lesson has lots of examples, including how to treat remainders as either fractions or decimals.

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

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The Easiest way to Multiply. Math Trick

tecmath 2023-08-14 | This is the EASIEST way to multiply ANY two numbers - even the really big ones!

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

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How to get the best exchange rate overseas (and NOT get ripped off!)

tecmath 2023-08-08 | Should I use the currency exchange on the street or use an ATM?
Should I get the ATM to convert to my home currency or Accept without Currency Conversion?
This video
looks at exchanging money overseas and how to get the best rate.
The difference - over a whopping 6%!

And it's not hard - just follow these basic tips.

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

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How much water in a Coconut?

tecmath 2023-08-02 | This is the kind of thing I wonder even in tropical climes.
Also the kind of thing I'd get my kids doing when schooling whist travelling.

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

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Area of a rectangle

tecmath 2023-07-24 | How to work out the area of a rectangle in square metres and square centimetres.

Area of a rectangle

tecmath 2023-07-24 | How to work out the area of a rectangle in square feet and square inches.

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

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3,4,5 Triangle

tecmath 2023-07-17 | The 3,4,5 triangle uses fairly simple math which can be used for all sorts of things. And yep it is Pythagoras but don't let that scare you...

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

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How to solve Algebra equations Easily - Trick

tecmath 2023-07-10 | This algebra trick allows you to easily solve where the variable (that letter x) occurs on either side of the equation. In just a few seconds. Snap!

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

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How to Solve Equations Easily.

tecmath 2023-07-03 | How to solve algebra equations easily.
Obviously this works only for basic algebra equations but it will save you lots of time and unnecessary working. Algebra is easy with a bit of tecmath!

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

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How to Solve Age Problems Easily

tecmath 2023-06-28 | Age problems in maths can be solved easily by combining all the information into a single equation and then solving. Lots of examples here too. No trick here - just step by step on how to solve.

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

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How to solce Time and Work problems easily in 5 seconds!

tecmath 2023-06-13 | Time and work questions are easy - just follow this easy math trick.

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

EASY WAY to work out Sequences - Maths Tips and tricks

tecmath 2023-06-05 | Sequences and series...what are the next numbers in the following pattern?
You'll be fine. Just follow these tips and tricks.

How to Solve Simultaneous Equations in under 10 Seconds - Algebra Math Trick

tecmath 2023-05-29 | Solve simultaneous equations much faster than using the elimination method or substitution.
In fact your teacher won't be able to solve them as fast!

So hahaha to them and more free time for you!

For more examples of how to solve simultaneous equations go here: youtube.com/playlist?list=PLjbxBzUM6SLlqoF9ixrgXCHcbnj1x9lla

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

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Math Trick thats easy (and fast!) #shorts

tecmath 2023-05-26 | Multiply two numbers in their teens with this fast math trick.

To see more math tricks check this out stooge!

youtube.com/playlist?list=PLjbxBzUM6SLk4VGcPW1Jz2tZdaZ6YZEKa

Solve Simultaneous Equations using the elimination method

tecmath 2023-05-21 | This is the third example in a series looking at how to solve simultaneous equations using the elimination method.

For more examples of how to solve simultaneous equations using the elimination method go here: youtube.com/playlist?list=PLjbxBzUM6SLlqoF9ixrgXCHcbnj1x9lla

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

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How to solve Simultaneous Equations by Elimination - example

tecmath 2023-05-20 | How to solve Simultaneous Equations by Elimination.

For more examples of how to solve simultaneous equations using the elimination method go here: youtube.com/playlist?list=PLjbxBzUM6SLlqoF9ixrgXCHcbnj1x9lla

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

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How to solve Simultaneous Equations by Elimination

tecmath 2023-05-19 | How to solve Simultaneous Equations using elimination.

How to Convert Decimals To Fractions - Math trick for recurring decimals

tecmath 2022-11-27 | Recurring decimals look a bit tricky but it is easy to convert them to fractions.
You'll spot the pattern no worries!

This is a remake of a video I made earlier - but I like this explanation better.

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

Solve Percentages in Your Head in seconds -» Easy Percentage Trick

tecmath 2022-11-06 | Solving percent problems is easy. By using this percentage trick to easily break down the percentage into different parts, you can solve percentage problems in your head in a matter of seconds.
This trick also is explained so you will know what you are doing and have a deeper understanding of what percentages are and how to solve them.

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

How to work out Surface area Instantly.

tecmath 2022-10-21 | This trick allows you to work out the surface area almost instantly of ANY rectangular prism (or box). How do you work out the TSA (total surface area) of a box - watch this video and you'll be able to do it instantly!

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

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Surface Area Trick

How to Calculate the Surface Area of a Cylinder.

tecmath 2022-09-13 | How to calculate surface area of a cylinder.
The surface area of a cylinder is easy to work out. In this video we will look at how to do it quickly and accurately.

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

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How Many Faces, Edges And Vertices Does A Triangular Prism Have?

tecmath 2022-09-05 | How Many Faces, Edges And Vertices Does A Triangular Prism Have?
Here we’ll look at how to work out the faces, edges and vertices of a triangular prism.
We’ll start by counting the faces, these are the flat surfaces that make the shape. A triangular prism has 5 faces altogether - 2 triangle faces, as well as 3 rectangular faces.
Next we’ll work out how many edges the triangular prism has, which are where two faces meet. It has 9 edges.
Next we’ll count the corners (the corners). A triangular prism has 6 vertices.

For the full playlist for the faces, edges and Vertices of a whole lot of 3D shapes go to youtube.com/playlist?list=PLjbxBzUM6SLkm4bRzOVOfdUnvXXu-bzaN

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

How Many Faces, Edges And Vertices Does A Square Pyramid Have?

tecmath 2022-09-05 | How Many Faces, Edges And Vertices Does A Square Pyramid Have?
Here we’ll look at how to work out the faces, edges and vertices of a square pyramid.
We’ll start by counting the faces, these are the flat surfaces that make the pyramid. A square pyramid has 5 faces altogether - 4 triangular faces, as well as 1 rectangular face.
Next we’ll work out how many edges the pyramid has, which are where two faces meet. A square pyramid has 8 edges.
Next we’ll count the corners of the pyramid (the corners). A square pyramid has 5 vertices.

For the full playlist for the faces, edges and Vertices of a whole lot of 3D shapes go to youtube.com/playlist?list=PLjbxBzUM6SLkm4bRzOVOfdUnvXXu-bzaN

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

How Many Faces, Edges And Vertices Does A Octagonal Prism Have?

tecmath 2022-09-05 | How Many Faces, Edges And Vertices Does A Octagonal Prism Have?
Here we’ll look at how to work out the faces, edges of vertices of an octagonal prism.
We’ll start by counting the faces, these are the flat surfaces that make the 3D shape. An octagonal prism has 10 faces altogether - 2 octagonal faces, as well as 8 rectangular faces.
Next we’ll work out how many edges the shape has, which are where two faces meet. An octagonal prism has 24 edges.
Next we’ll count the corners of the shape(the corners). Get counting! An octagonal prism has 160 vertices.

For the full playlist for the faces, edges and Vertices of a whole lot of 3D shapes go to youtube.com/playlist?list=PLjbxBzUM6SLkm4bRzOVOfdUnvXXu-bzaN

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

How Many Faces, Edges And Vertices Does A Rectangular Prism Have?

tecmath 2022-09-05 | How Many Faces, Edges And Vertices Does A Rectangular Prism Have?
Here we’ll look at how to work out the faces, edges and vertices of a rectangular prism.
We’ll start by counting the faces, these are the flat surfaces. A rectangular prism has 6 faces altogether - all rectangular in shape.
Next we’ll work out how many edges the rectangular prism has, which are where two faces meet. A rectangular proven has 12 edges.
Next we’ll count the corners of the rectangular prism (the corners). Altogether it has 8.

For the full playlist for the faces, edges and Vertices of a whole lot of 3D shapes go to youtube.com/playlist?list=PLjbxBzUM6SLkm4bRzOVOfdUnvXXu-bzaN

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

How Many Faces, Edges And Vertices Does A Cone Have?

tecmath 2022-09-05 | How Many Faces, Edges And Vertices Does A Cone Have?
Here we’ll look at how to work out the faces, edges and vertices of a cone.
We’ll start by counting the faces, these are the flat surfaces that make the cone. A cone has 1 face altogether - 1 circular base, as well as 1 curved surface.
Next we’ll work out how many edges the cone has, which are where two faces meet. A cone has 1 edge.
Next we’ll count the corners of the cone (the corners). No surprises, a cone does not have any vertices.

For the full playlist for the faces, edges and Vertices of a whole lot of 3D shapes go to youtube.com/playlist?list=PLjbxBzUM6SLkm4bRzOVOfdUnvXXu-bzaN

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

How Many Faces, Edges And Vertices Does A Hexagonal Prism Have?

tecmath 2022-09-05 | How Many Faces, Edges And Vertices Does A Hexagonal Prism Have?
Here we’ll look at how to work out the faces, edges and vertices of a hexagonal prism.
We’ll start by counting the faces, these are the flat surfaces that make the shape. A hexagonal prism has 8 faces altogether - 2 hexagons and 6 rectangles.
Next we’ll work out how many edges the hexagonal prism has, which are where two faces meet. A hexagonal prism has 18 edges.
Next we’ll count the corners of the shape (the corners). A count will show there are 12 vertices.

For the full playlist for the faces, edges and Vertices of a whole lot of 3D shapes go to youtube.com/playlist?list=PLjbxBzUM6SLkm4bRzOVOfdUnvXXu-bzaN

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

How Many Faces, Edges And Vertices Does A Cube Have?

tecmath 2022-09-05 | How Many Faces, Edges And Vertices Does A Cube Have?
Here we’ll look at how to work out the faces, edges and vertices of a cube.
We’ll start by counting the faces, these are the flat surfaces that make the cube. A cube has 6 faces altogether - all square in shape.
Next we’ll work out how many edges the cube has, which are where two faces meet. A cube has 12 edges.
Next we’ll count the corners of the cube (the corners). Do that and you'll get 8.

For the full playlist for the faces, edges and Vertices of a whole lot of 3D shapes go to youtube.com/playlist?list=PLjbxBzUM6SLkm4bRzOVOfdUnvXXu-bzaN

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

How Many Faces, Edges And Vertices Does A Cylinder Have?

tecmath 2022-09-05 | How Many Faces, Edges And Vertices Does A Cylinder Have?
Here we’ll look at how to work out the faces, edges and vertices of a cylinder.
We’ll start by counting the faces, these are the flat surfaces that make the cylinder. A cylinder has 2 faces altogether - 2 circular faces, as well as 1 rectangular face.
Next we’ll work out how many edges the cylinder has, which are where two faces meet. A cylinder has 2 edges.
Next we’ll count the corners of the cylinder (the corners). No surprises, a cylinder does not have any vertices.

For the full playlist for the faces, edges and Vertices of a whole lot of 3D shapes go to youtube.com/playlist?list=PLjbxBzUM6SLkm4bRzOVOfdUnvXXu-bzaN

To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store