Mental Math Challenge...............pptx

Education

1. CHALLENGE Mental Math the Addition and Subtraction to 20

2. DIRECTIONS: Take out a white board You will have 30 seconds per problem to mentally complete the math and write your answer The goal Is to have to most score.

3. 15+2-4+8= 21

4. 19-4+5+6-8= 18

5. 7+4+8-9-2= 8

6. 12+6+6-3+10 31

7. 17-3+7-9+5+2 19

8. 12+5-6+11-8= 14

9. 11-5+8+9-6-2 15

10. 13+6+7+9-11+2= 26

11. 17-9+8+7-5+2= 20

12. 10+7+3+7-9+10= 28

13. 18-12+6+9-3+11= 29