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DIY Maths
Integers
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DIY Maths
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Algebra
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Variables and expressions
Order of operations
Expanding expressions with brackets
Exponent basics
Radicals basics
Evaluating expressions
Evaluating a formula using substitution
Solving one-step equations
Solving two-step equations
Solving multi-step equations
Transposition
Decimals
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Place value
Comparing and ordering decimals
Rounding to a place
Significant figures
Standard form and engineering notation
Adding decimals
Subtracting decimals
Multiplying decimals
Dividing decimals
Converting decimals to fractions
Converting decimals to percents
Converting between decimals, fractions and percents
Ordering decimals, fractions and percents
Fractions
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Understanding fractions
Simplifying (reducing) fractions
Equivalent fractions
Comparing fractions
Ordering fractions
Mixed numbers and improper fractions
Adding fractions
Subtracting fractions
Adding and subtracting mixed numbers
Multiplying fractions
Dividing fractions
Multiplying and dividing mixed numbers
Converting fractions to decimals
Converting fractions to percents
Converting between fractions, decimals and percents
Ordering fractions, decimals and percents
Integers
The number line
Ordering negative numbers
Number opposites
Absolute value
Adding and subtracting with negative numbers
Multiplying with negative numbers
Dividing with negative numbers
Measurement
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Metric units of measure
Perimeter of squares, rectangles and triangles
Circumference of circles
Area of squares, rectangles and triangles
Area of circles
Surface area of cubes, cuboids and triangular prisms
Surface area of cylinders
Volume of cubes, cuboids and triangular prisms
Volume of cylinders, cones, spheres and pyramids
Percents
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Solving percent problems
Express increase/decrease as a percentage
Converting percents to fractions
Converting percents to decimals
Converting between percents, fractions and decimals
Ordering percents, fractions and decimals
Statistics
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Mean, median and mode
Range, variation and standard deviation
Trigonometry
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All about angles
Similar triangles
The Pythagorean Theorem
Introduction to sine, cosine and tangent
Find an unknown side length
Find an unknown angle measure
Using trig in the real world
INTEGERS
The integers are: { . . . -3, -2, -1, 0, 1, 2, 3 . . .}
Integer basics
The number line
All real numbers can be plotted in a line called a "Number Line". In this unit, you can learn how to make a number line and how to put numbers on it.
Ordering negative numbers
In this unit, you can study how to put negative numbers in order from least to greatest.
Number opposites
This unit shows you how to find the opposite (or additive inverse) of any integer.
Absolute value
In this unit, you can learn how to find the absolute value (or distance from zero) of any integer.
Calculating with integers
Adding and subtracting with negative numbers
In this module you can study how to add and subtract with negative numbers.
Multiplying with negative numbers
In this module, you can learn how to multiply with negative numbers.
Dividing with negative numbers
In this module, you can learn how to divide with negative numbers.
Not included
DIY Maths does not cover these topics:
How to add and subtract positive numbers
How to multiply and divide positive numbers
Factors and multiples
You may study them by clicking the links to online tutorials at Khan Academy.
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Ordering fractions, decimals and percents
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The number line >>