multiplication
multiplication
substraction
addition
addition
100

30X2

60

100

3X9

27

100

10-3

7

100

5+7

12

100

2+5

7

200

50X11

550

200

20X3

60

200

34-11

23

200

24+5

29

200

37+9

46

300

20X12

240

300

31X9

279

300

59-35

24

300

58+10

68

300

59+35

94

400

11X23

253

400

12X60

720

400

312-11

301

400

346+31

377

400

421+61

482

500

56X60

3,360

500

47X36

1,692

500

529-30

499

500

519+91

610

500

987+45

1032