Curriculum
1st Grade Math - OA.C.6 - Add And Subtract Within 20
1st Grade Math - OA.C.6 - Add And Subtract Within 20
1st Grade Math - OA.C.6 - Add And Subtract Within 20
1st Grade Math - OA.C.6 - Add And Subtract Within 20

11 Questions

CCSS.Math.Content.1.OA.C.6
1

Add And Subtract Within 20 Introduction

2

True or False: The difference between 11 and 6 is 5.

3

Find the sum.

4

Solve.

5

Type in the missing number to make the subtraction sentence true.

6

Type in the subtraction sentence shown in this model.

7

Penny has 12 dolls. She gave her little sister 5 of them. How many dolls does Penny have now?

8

Which of these expressions are equal to 15? Select ALL that apply.

9

Four students were given a math problem. One of them made a mistake. Click on the student who made a mistake.

10

Melina says that the answer to 10 + 4 is bigger than the answer to 20 - 4. Do you agree with Melina? Explain.

11

Would you add or subtract to solve this problem? Explain why by typing in your answer.

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The question sets found here work best in conjunction with the Strategic Thinking in Math training for grades 1 - 8.

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