Show:
Add It Up
Take Some Away
What's Missing?
Make It Equal
It's Missing
Something!
100

3 + 3 = _____

3 + 3 = 6

100

8 - 4 = ____

8 - 4 = 4

100

9 = 7 + ____

9 = 7 + 2

100

3+1=2+___

3+1=2+2

Both sides must equal 4


100

10-2 = 4+___

10-2 = 4+4

You know 10-2=8.

What added to 4 will also equal 8?


200

4 + 5 = ____

4 + 5 = 9

Use the doubles + 1 strategy.

4 + 4 = 8, so 4 + 5 = 9

200

10 - 7 = _____

10 - 7 = 3

200

9 - ____ = 3

9 - 6 = 3

200

2+___=4+2

2+4=4+2

200

___-6 = 9-7

8-6 = 9-7

Both sides of the equal sign must be 2. 

300

7 + 7 = _____

7 + 7 = 14

300

15 - 5 = ____

15 - 5 = 10

300

8 + ____ = 16

8 + 8 = 16

300

___+8=10+5

7+8=10+5

You know that 10+5=15

So think, 15-8=?

Or ? +8=15

300

0+13 = ___+8

0+13 = 5+8

400

4 + 7 = ____

4 + 7 = 11

Make a ten (7 + 3 = 10) add one more. 

400

18 - 9 = ____

18 - 9 = 9

400

____ + 3 = 12

9 + 3 = 12

400

12+2=5+___

12+2=5+9

400

4+3+___=6+7

4+3+6=6+7

500

3 + 4 + 6 = _______

3 + 4 + 6 = 14

Make a 10 with 4 + 6 then add 3 more.

500

7 - 7 = ____

7 - 7 = 0

500

3+ __+ 7 = 14

3+4+4 = 14

500

___-6=9-5

10-6=9-5

You know that 9-5=4.

Make the other side of the equal sign the same amount!

500

12+2=20-___

12+2=20-6

12+2=14

20-___=14 OR

14+___-20