Show:
1st grade
2nd grade
3rd grade
4th grade
5th grade
100

15 x 8

120

100

(9x8) + 12 

84

100

178+53+47-128=

150

100

0.6 x 12 x 100

720

100

? ×10 = 8.8

0.88

200

45 + 28  + 33

106


200

25+65-12

78

200

630÷(15-8) times 5

450

200

13.5 - 0.27

13.23

200

5000 × 3.03

15 150

300

25 + 47 - 32 + 29

69

300

(60÷10) x 12

72

300

2km-500m+650m=(    )km

2.15 km

300

(167 + 76) ÷ 3

81

300

Mr Patel invested $12 000 in an investment fund. The bank paid 4% interest at the end of each year. How much interest did he earn at the end of 1 year?

$ 480

400

(17 x 4) - 4 + 17

81

400

To the simplest form:

11/12-1/4+1/3-2/4

1/2

500

(56 ÷ 4)  + 39

53

500

42.35-(31.35-5.65)

16.65