devison
multiplication
elapsed time
subtraction
addition
100

20/3

18 R2

100

3x3

9

100

2:30 to 3:00

30

100

15-5

10

100

10+35

45

200

30/5

6

200

5x5

25

200

5:25 to 5:45

20

200

28-11

17

200

24+26

50

300

45/10

4 R5

300

6x6

36

300

1:15 to 3:30

2hr 15mins

300

32-18

14

300

52+38

90

400

55/15

3 R10

400

8x8

64

400

5:25 to 8:00

2hr 35mins

400

55-15

40

400

85+56

141

500

120/50

2 R20

500

12x12

132

500

8:45 to 11:20

3hr 35mins

500

67-25

42

500

97+125

222

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