Subtraction facts within 20 worksheets Grades 1–2
The subtraction facts to 20, learned by counting back and by thinking of the matching addition fact.
- Subtracting 1 and 2Take away 1 or 2 by counting back.
- Subtracting 3 and 4Take away 3 or 4 by counting back or thinking of the addition fact.
- Subtracting from 10Take a number away from 10 using the pairs that make 10.
- Subtraction facts within 10Mixed subtraction facts within 10, solved by thinking addition.
- Teen numbers minus onesSubtract ones from a teen number: the ten stays.
- Subtracting 5, 6 and 7Subtract 5, 6 or 7 from a teen number by going back to 10 first.
- Subtracting 8 and 9Subtract 8 or 9 by taking away 10 and adding back.
- Missing number addition and subtractionFind the missing number that makes each addition or subtraction fact true.
- Mixed addition and subtraction to 20Mixed addition and subtraction facts to 20. Watch the sign on every problem.
Unit packet
One two-sided worksheet for every topic, then the unit test, with the answer key at the back. Fresh each time.
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Unit test
Two problems from every topic. Pass it and move up to the next unit.
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