Breaking Apart Numbers for Addition

What is the purpose of using ten sticks and one blocks in addition?

• To make subtraction easier

• To multiply numbers

• To help visualize and simplify addition

• To divide numbers

How can the number 6 be broken down to make adding to 27 easier?

• Into 3 and 3

• Into 5 and 1

• Into 4 and 2

• Into 2 and 4

When adding 15 and 7, what is the resulting sum after regrouping?

• 21

• 23

• 20

• 22

What is the sum of 26 and 5 after breaking apart and regrouping?

• 32

• 33

• 31

• 30

What is the final sum of 28 and 6 using the breaking apart method?

• 34

• 32

• 33

• 35