Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

Beat the Computer Drill

All Integer Subtraction

Facts to +/- 10

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

Directions•A slide will appear with a problem.

•Say the answer aloud before the computer can answer (3 sec).

•You will hear a sound when the slide changes.

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-5 - 6

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-5 - 6 =

-11

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

2 - (-8)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

2 - (-8) =

10

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-2 - 10

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-2 - 10 =

-12

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

2 - (-2)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

2 - (-2) =

4

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-5 - (-3)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-5 - (-3) =

-2

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-1 - (-8)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-1 - (-8) =

7

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

7 - (-16)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

7 - (-16) =

23

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-2 - (-7)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-2 - (-7) =

5

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

7 - (-13)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

7 - (-13) =

20

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

1 - (-9)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

1 - (-9) =

10

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

8 - (-10)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

8 - (-10) =

18

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

3 - (-4)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

3 - (-4) =

7

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

9 - (-6)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

9 - (-6) =

15

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

5 - (-8)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

5 - (-8) =

13

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-9 - 0

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-9 + 0 =

-9

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

10 - (-10)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

10 - (-10) =

20

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

7 - (-5)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

7 - (-5) =

12

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

4 - (-2)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

4 - (-2) =

6

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

6 - (-5)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

6 - (-5) =

11

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-3 - 12

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-3 - 12 =

-15

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-9 - 6

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-9 - 6 =

-15

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

2 - (-11)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

2 - (-11) =

13

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

9 - (-10)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

9 - (-10) =

19

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

6 - (-16)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

6 - (-16) =

22

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

8 - (-5)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

8 - (-5) =

13

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

9 - (-19)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

9 - (-19) =

28

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-1 - (-3)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-1 - (-3) =

2

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

3 - (-12)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

3 - (-12) =

15

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

4 - (-7)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

4 - (-7) =

11

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

10 - (-18)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

10 - (-18) =

28

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-8 - 10

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-8 - 10 =

-18

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

9 - (-13)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

9 - (-13) =

22

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-10 - 12

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-10 - 12 =

-22

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

4 - (-13)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

4 - (-13) =

17

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-10 - 1

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-10 - 1 =

-11

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

3 - (-3)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

3 - (-3) =

6

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

5 - (-5)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

5 - (-5) =

10

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-7 - 2

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-7 - 2 =

-9

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

4 - (-14)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

4 - (-14) =

18

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-7 - 17

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-7 - 17 =

-24

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

10 - (-3)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

10 - (-3) =

13

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-3 - (-5)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-3 - (-5) =

2

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-6 - (-2)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-6 - (-2) =

-4

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

8 - (-3)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

8 - (-3) =

11

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

10 - (-16)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

10 - (-16) =

26

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-6 - 8

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-6 -8 =

-14

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-8 - (-2)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-8 - (-2) =

-6

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

8 - (-8)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

8 - (-8) =

16

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-4 - 0

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-4 + 0 =

-4

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

6 - (-9)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

6 - (-9) =

15

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

7 - (-7)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

7 - (-7) =

14

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-4 - (-4)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

-4 - (-4) =

0

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

6 - (-11)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

6 - (-11) =

17

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

1 - (-3)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

1 - (-3) =

4

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

5 - (-12)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

5 - (-12) =

17

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

5 - (-1)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

5 - (-1) =

6

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

1 - (-1)

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009

1 - (-1) =

2

Adapted from Becky Afghani, LBUSD Math Curriculum Office, 2004 by Jeri Shaver, Bancroft, 2009