Arithmetic

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Table of contents
Mission

Topics

Addition and subtraction
Multiplication and division
Negative numbers and absolute value
Decimals
Fractions
Telling time
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Staff picks

Exercise
Whole numbers on the number line
8:01
The idea of division
2:29
Fraction word problem: lizard
Exercise
Adding negative numbers
1:58
Decimals & fractions on the number line

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Intro to addition and subtraction
Adding and subtracting is the basis of all mathematics. This tutorial introduces you to one-digit addition and subtraction. You might become pretty familiar with the number line too!
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Table of contents