Addition and Subtraction of Round Tens within 100

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What is 30 + 20?

30 + 20 is 50.

Subtract 40 from 80.

80 - 40 is 40.

Add 50 to 30.

50 + 30 is 80.

What is 90 - 10?

90 - 10 is 80.

Subtract 20 from 60.

60 - 20 is 40.

If you add 10 and 70, what is the result?

10 + 70 is 80.

What is 40 + 50?

40 + 50 is 90.

Subtract 30 from 60.

60 - 30 is 30.

What is 70 - 20?

70 - 20 is 50.

If you add 60 to 40, what do you get?

60 + 40 is 100.

What is 80 + 10?

80 + 10 is 90.

Subtract 50 from 70.

70 - 50 is 20.

Add 40 to 20.

40 + 20 is 60.

What is 60 - 30?

60 - 30 is 30.

Subtract 10 from 90.

90 - 10 is 80.