Counting as Addition/Subtraction

If Noa wants to solve 15 - 11, she could start with 15 and ____.

• Count back 11.

• Count on 10.

• Count back 9.

• Count on 8.

If Tim wants to solve 10 - 5, he could start with 10 and ____.

• Count back 1.

• Count back 2.

• Count back 5.

• Count back 10.

If Sam wants to add 3 + 2, he could start with 3 and ____.

• Count on 2.

• Count back 2.

• Count on 3.

• Count back 3.

If Erin wants to add 5 + 11, she could start with 5 and ____.

• Count back 11.

• Count on 11.

• Count on 10.

• Count back 10.

If Blake wants to add 10 + 5, he could start with 10 and ____.

• Count on 10.

• Count back 10.

• Count on 5.

• Count back 5.

If Lea wants to solve 15 - 3, she could start with 15 and ____.

• Count back 1.

• Count back 3.

• Count on 3.

• Count on 10.

If June wants to add 1 + 3, she could start with 1 and ____.

• Count back 1.

• Count on 1.

• Count back 3.

• Count on 3.

If Mia wants to solve 12 - 8, she could start with 12 and ____.

• Count back 4.

• Count back 6.

• Count back 8.

• Count on 8.

If Al wants to solve 6 - 3, he could start with 6 and ____.

• Count on 1.

• Count back 1.

• Count on 3.

• Count back 3.

If Jay wants to solve 13 - 2, he could start with 13 and ____.

• Count back 1.

• Count back 2.

• Count on 2.

• Count on 12.