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100

2-1=?

2-1=1

100

3 - ? = 1

3 - 2 = 1

100

3 - 2 = 1

Draw the Picture 

100

4 - 2 = 1

No 

4 - 2 = 2

200

5-3=?

5-3=2

200
5 - ? = 2

5 - 3 = 2

200

6 - 3 = 3

Draw the picture


200

5 - 2 = 3

Yes 

5 - 2 = 3

300

6-4=?

6-4=2

300

8 - ? = 4

8 - 4 = 4

300

10 - 3 = 7

Draw the picture


300

7 - 2 = 5

Yes 

7 - 2 = 5

400

10-8=?

10-8=2

400

10 - ? = 5

10 - 5 = 5

400

9 - 4 = 5

Draw the picture

400

10 - 10 = 1

No

10-10=0

500

20-5=?

20-5=15

500

10 - ? = 6

10 - 4 = 6

500

11 - 5 = 6

Draw the picture

500

20 - 10 = 10

Yes

20-10=10