Ch. 3 Adding Two-Digit Numbers

Front

What is the sum of 27 + 56 + 3?

Back

86

Front

What is 64 + 5?

Back

69

Front

What is the sum of 19 + 24 + 31 + 5?

Back

79

Front

What is the total value of these base-ten blocks?

Back

67

Front

Do you need to regroup in the problem 34 + 54?

Back

No

Front

What does it mean to regroup in addition?

Back

Regrouping is when you carry over a value to the next column when the sum exceeds 10.

Front

What is the value of 10 + 10?

Back

20

Front

What is the value of 30 + 40?

Back

70

Front

What is the value of 50 + 20?

Back

70

Front

What is the value of 25 + 25?

Back

50