Adding and Subtracting with Regrouping

Front

What is regrouping in addition?

Back

Regrouping in addition is when you combine numbers and if the sum is more than 10, you carry over to the next column.

Front

What is regrouping in subtraction?

Back

Regrouping in subtraction is when you borrow from the next column if the top number is smaller than the bottom number.

Front

64 + 29 = ?

Back

93

Front

32 + 28 = ?

Back

60

Front

86 - 52 = ?

Back

34

Front

21 + 47 = ?

Back

68

Front

40 + 5 = ?

Back

45

Front

What do you do when you add 9 + 5?

Back

You can regroup because 9 + 5 = 14, so you write down 4 and carry over 1.

Front

What is the first step in adding two-digit numbers?

Back

Line up the numbers by place value (ones under ones, tens under tens).

Front

What is the first step in subtracting two-digit numbers?

Back

Line up the numbers by place value (ones under ones, tens under tens).