10

10

doubles

more doubles

+2

+3

100

5+5

100

2+2

What is 4

100

5+5

What is 10

100

2+2

What is 4

100

1+3

What is 4

200

9+1

200

3+3

What is 6

200

10+10

What is 20

200

3+2

What is 5

200

3+4

What is 7

300

8+2

300

4+4

What is 8

300

8+8

What is 16

300

6+2

What is 8

300

5+3

What is 8

400

7+3

400

6+6

What is 12

400

9+9

What is 18

400

7+2

What is 9

400

6+3

What is 9

500

6+4

500

7+7

What is 14

500

100+100

What is 200

500

4+2

What is 6

500

9+3

What is 12

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