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k math
1st grade math
2nd grade math
3rd grade math
4th grade math
100

1+1

2
100

4-1

3


100

20+50

70

100

3x1

3

100

3 divided by 1

3

200

4+4

8



200

5-4

1

200

60+40

100

200

5x2

10

200

100x10

1,000

300

5+5

10

300

5-3

2


300

100+500

600

300

4x2

8

300

9x9

81

400

10+5

15

400

8-4

4

400

12+12

24

400

6x2

12

400

10x9

90


600

20+3

23

600

20-6

14

600

60+7

67!!!!

600

4x7

28

600

9x8

72