Unit 8 : Addition and Subtraction within 20

Count carefully.

4 more than 16 is _____

Count carefully.

_____ is5 less than 13.

Count carefully.

_____ is 4 less than 18.

Count carefully.

5 more than 13 is _____

Count carefully.

_____ is 7 more than 12.

Choose the correct answer.

19 = _____ ten _____ ones.

• 1 ten 90 ones

• 1 ten 19 ones

• 9 tens 1 one

• 1 ten 9 ones

Choose the correct answer.

20 = _____ tens _____ one

• 2 tens 0 one

• 2 tens 20 ones

• 2 tens 10 ones

• 20 tens 0 ones

Choose the correct answer.

11 = _____ ten _____ one

• 1 ten 11 ones

• 1 ten 10 ones

• 1 ten 1 one

• 11 tens 1 one

Choose the correct number bonds in term "tens" and "ones".

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Choose the correct number bonds in term "tens" and "ones".

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