Answer:
1.18
2.23
3.62.625
4.9.72
5.19.625
6.15
7. -
8.597
9.24
10.30
Step-by-step explanation:
1.- 18÷6×3 = 9
- 12-3+9 = 18
2.- 12÷6 = 2
- 18-2+7 = 23
3.- 7×9 = 63
- 3÷8 = 0.375
- 63 - 0.375 = 62.625
4.- 8÷4×5 = 10
- 7÷25 = 0.28
- 10 - 0.28 = 9.72
5.- 90÷9×2 = 20
- 3÷8 = 0.375
- 20 - 0.375 = 19.625
6.(3² evaluate the power - 9) 3×[3+2×(10-9)] = 3×[3+2×1] = 3×[3+2] = 3×[5] = 15
7. -
8.- 120÷60 = 2
- 4×150 = 600
- 10 - 5 = 5
- 2+600-5 = 597
9. -2+5 = 3
- 5×5 = 25
- 24 - 25 = -1
- 8×3 = 24
10.- 39÷3 = 13
- 13 - 8 = 5
- 42÷7×5 = 30