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Addition and subtraction within 20

Practice
Add within 20Get 5 of 7 questions to level up!
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Add 3 numbersGet 5 of 7 questions to level up!
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Practice
Subtract within 20Get 5 of 7 questions to level up!
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Level up on the above skills and collect up to 300 Mastery points
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Equal signGet 5 of 7 questions to level up!
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Level up on the above skills and collect up to 200 Mastery points
Level up on the above skills and collect up to 400 Mastery points
Practice
Repeated additionGet 3 of 4 questions to level up!
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Unit test

Level up on all the skills in this unit and collect up to 1000 Mastery points!

About this unit

Learn to add and subtract numbers that are 20 or less.