Answer:
1) 20.864
2) 195.4
3) 17.6
4) 38.05
5) 1.76
6) 6.11
Explanation:
(8.15 × 4 ÷ 5) × 3.2
= (32.6 ÷ 5) × 3.2
= 6.52 × 3.2
= 20.864
125 + 32 × 2.2
= 125 + 70.4
= 195.4
17 + 8 × (2.7 ÷ 6) - 3
= 17 + 8 × 0.45 - 3
= 17 + 3.6 - 3
= 17 + 0.6
= 17.6
38.9 - 2.3 × 1.5 + 2.6
= 38.9 - 3.45 + 2.6
= 38.9 - 0.85
= 38.05
0.2 × (5 - 0.7) + 1.8 ÷ 2
= 0.2 × 4.3 + 0.9
= 0.86 + 0.9
= 1.76
21.5 ÷ 5 + (8.06 - 12.5 ÷ 2)
= 4.3 + (8.06 - 6.25)
= 4.3 + 1.81
= 6.11