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 the extra value 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

21 + 47 = ?

Back

68

Front

54 + 28 = ?

Back

82

Front

75 - 45 = ?

Back

30

Front

47 - 26 = ?

Back

21

Front

32 + 28 = ?

Back

60

Front

What does it mean to add?

Back

To add means to combine two or more numbers to get a total.

Front

What does it mean to subtract?

Back

To subtract means to take one number away from another.

Front

What is the sum of two numbers?

Back

The sum is the result of adding two or more numbers together.