Adding 2-digit numbers with regrouping a ten

Front

What is regrouping in addition?

Back

Regrouping in addition is the process of carrying over a value from one column to the next when the sum of a column exceeds 10.

Front

How do you add two-digit numbers with regrouping?

Back

To add two-digit numbers with regrouping, start by adding the digits in the ones place. If the sum is 10 or more, regroup by carrying over to the tens place and then add the digits in the tens place.

Front

What is the sum of 27 and 35?

Back

The sum of 27 and 35 is 62. (2+3=5 in the tens place, 7+5=12, regroup 1 to tens place, so 5+1=6, final answer is 62.)

Front

What is the sum of 46 and 29?

Back

The sum of 46 and 29 is 75. (4+2=6 in the tens place, 6+9=15, regroup 1 to tens place, so 6+1=7, final answer is 75.)

Front

What do you do if the sum of the ones place is 10 or more?

Back

If the sum of the ones place is 10 or more, you regroup by carrying over 1 to the tens place.

Front

What is the sum of 58 and 37?

Back

The sum of 58 and 37 is 95. (5+3=8 in the tens place, 8+7=15, regroup 1 to tens place, so 8+1=9, final answer is 95.)

Front

What is the importance of place value in addition?

Back

Place value is important in addition because it helps to organize numbers into ones, tens, hundreds, etc., ensuring accurate calculations.

Front

How do you check your addition with regrouping?

Back

To check your addition with regrouping, you can add the numbers again or use the inverse operation (subtraction) to verify the result.

Front

What is the sum of 82 and 19?

Back

The sum of 82 and 19 is 101. (8+1=9 in the tens place, 2+9=11, regroup 1 to tens place, so 9+1=10, final answer is 101.)

Front

What is the sum of 74 and 29?

Back

The sum of 74 and 29 is 103. (7+2=9 in the tens place, 4+9=13, regroup 1 to tens place, so 9+1=10, final answer is 103.)