Addition
subtraction
Muliptication by 2
mulptication by 5
mulpticaion 10
100

10+15

25

100

78-7

71

100

2 times 2

4

100

5 times 2

10

100
10 times 1

10

200

10+55

65

200

62-21

41

200

2 times 3

6

200

5 times 5

25

200

10 times 3

30

300

60+60

120

300

86-35

51


300

2 times 6

12

300

5 times 7

35

300

10 times 5

50

400

150+159

309

400

1288-1233

55

400

2 times 10

20

400

5 times 12

60

400

10 times 10

100

500

1299+1211

2510

500

1299-1199

100

500

2 times 15_{15 plues 15

30

500

5 times 14

70

500

10 times 20

200