Show:
2 digit addition
2 digit subtraction
3 digit addition/subtraction
multiplication
division
100

45 + 37

82

100

97-68

29

100

324-178

146

100

3x6

18

100

12/4

3

200

33+32

55

200

63-19

44

200

777-688

89

200

6x5

30

200

56/7

8

300

27+57

84

300

78-61

17

300

256-197

59

300

8x9

72

300

72/12

6

400

12+19

31

400

54-39

15

400

529-378

151

400

11x4

44

400

99/9

11

500

78+99

177

500

30-21

9

500

The 4th grade at DCS has 3 different classes. each class has 24 students. How many students are there in the 4th grade?

72

500

12x7

84

500

121/11

11