Addition without regrouping

What does addition mean?

• Taking numbers apart

• Putting numbers together

• Multiplying numbers

• Dividing numbers

What is 5 + 2?

• 6

• 7

• 8

• 9

What is the sum of 54 + 21?

• 65

• 75

• 85

• 74

What is the sum of 33 + 6?

• 36

• 38

• 39

• 40

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What is the primary purpose of regrouping in addition?

• To split digits and place them in different columns.

• To make numbers smaller for easier calculation.

• To combine single-digit numbers into a double-digit number.

• To always carry over a '1' to the next column.

When is regrouping necessary in double-digit addition?

• When the sum of the tens column is a double-digit number.

• When the sum of the ones column is a double-digit number.

• When both the ones and tens columns result in single-digit sums.

• Regrouping is always necessary in double-digit addition.

For the addition problem 32 + 19, do you need to regroup?

• No, because 2 + 9 is a single-digit number.

• Yes, because 2 + 9 results in a double-digit number.

• No, because the sum of the tens column is less than 10.

• Yes, because both numbers are double-digit.

For the addition problem 56 + 22, do you need to regroup?

• Yes, because 5 + 2 is a double-digit number.

• No, because 6 + 2 results in a single-digit number.

• Yes, because both numbers are double-digit.

• No, because the sum of the tens column is less than 10.