Addition and subtraction within 20
Learn to add and subtract numbers that are 20 or less.
This course contains 7 segments:
Addition within 20
Learn to add. Numbers used are 20 or less.
Subtraction within 20
Learn to subtract. Numbers used are 20 or less.
Equal sign
Learn the meaning of '=', the equal sign.
Missing number within 20
Learn how to solve problems like "___ + 7 = 18" where you don't know one of the values in an addition or subtraction equation.
Word problems within 20
Learn how to solve addition and subtraction word problems. Numbers used are 20 or less.
Word problems with "more" and "fewer"
Learn how to solve word problems that use the words "more" and "fewer". Numbers used are 20 or less.
Repeated addition
Adding the same number to itself over and over
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| Rating | Not enough ratings |
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| Length | 7 segments |
| Starts | On Demand (Start anytime) |
| Cost | Free |
| From | Khan Academy |
| Download Videos | On all desktop and mobile devices |
| Language | English |
| Subjects | Mathematics |
| Tags | Math Early math |
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| Rating | Not enough ratings |
|---|---|
| Length | 7 segments |
| Starts | On Demand (Start anytime) |
| Cost | Free |
| From | Khan Academy |
| Download Videos | On all desktop and mobile devices |
| Language | English |
| Subjects | Mathematics |
| Tags | Math Early math |
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