2-Digit Addition with Regrouping

What is 34 + 28?

• 60

• 56

• 62

• 70

Solve the addition problem: 56 + 39

• 95

• 77

• 64

• 102

When do you need to regroup in addition?

• When the sum of two numbers in a row is greater than 9

• When the sum of two numbers in a column is greater than 9

• When the sum of two numbers in a column is less than 5

• When the sum of two numbers in a column is equal to 10

Calculate: 47 + 59

• 106

• 115

• 104

• 93

Explain the concept of carrying over in addition

• Carrying over in addition means subtracting the excess value from the sum

• Carrying over in addition involves moving the excess value from one place value to the next higher place value when the sum exceeds 9.

• Carrying over in addition involves multiplying the numbers instead of adding them

• Carrying over in addition is only used when the sum is less than 9

Find the sum of 68 + 37

• 95

• 102

• 113

• 105

Identify the need for regrouping in 45 + 29

• Regrouping is not needed in this addition problem.

• When adding 45 + 29, regrouping is needed because the sum of the ones place digits (5 + 9) is greater than 9. The 4 is regrouped to the tens place, and the 1 is carried over to the tens place.

• Regrouping is needed because the sum of the ones place digits (5 + 9) is less than 9.

• Regrouping is needed because the sum of the tens place digits (4 + 2) is greater than 9.

Add: 53 + 48

• 110

• 99

• 101

• 105

Why is regrouping important in addition?

• To slow down the addition process

• To make the calculation more complicated

• To combine numbers in a way that makes calculations easier and prevents errors.

• To confuse the person solving the problem

Determine the result of 76 + 58

• 134

• 210

• 177

• 99