Mental Math Strategies | Baamboozle - Baamboozle

English 19 Public

Practicing mental math strategies

Study Slideshow

3+3? Strategy?

6 - Doubles

15

What mental math strategy would you use to solve this question?

Friendly 10s

15

You use this strategy when you are adding or subtracting 1, 2 or 3

Counting on and counting back

15

6+4

10

15

What strategy would you use to solve 9+1?

Counting on or Friends of 10

15

2+8? Strategy?

10 - Friends of 10

15

What strategy would you use to solve 6+6?

Doubles

15

7-3

4

15

8+8? Strategy?

16 - Doubles

15

5 + 6? Strategy?

11 - Near Doubles

15

9+3? Strategy?

12 - Count on

15

9+9=? Strategy?

18 - Doubles

15

6-2=? Strategy?

4 - Counting back

15

5+3

8

15

What strategy would you use to solve 6-3?

Counting back

15

4-3

1

15