25. 1) Вычисли значения выражений. 45+27:3-12 90-36:3·2 84:4·3+2 100-10·9-8 17+15·3·0 5·5+75:5 17·3+2·10 80-5·2:10 72:6+6·5

1. $$45 + 27 : 3 - 12 = 45 + 9 - 12 = 54 - 12 = 42$$
2. $$90 - 36 : 3 \times 2 = 90 - 12 \times 2 = 90 - 24 = 66$$
3. $$84 : 4 \times 3 + 2 = 21 \times 3 + 2 = 63 + 2 = 65$$
4. $$100 - 10 \times 9 - 8 = 100 - 90 - 8 = 10 - 8 = 2$$
5. $$17 + 15 \times 3 \times 0 = 17 + 45 \times 0 = 17 + 0 = 17$$
6. $$5 \times 5 + 75 : 5 = 25 + 15 = 40$$
7. $$17 \times 3 + 2 \times 10 = 51 + 20 = 71$$
8. $$80 - 5 \times 2 : 10 = 80 - 10 : 10 = 80 - 1 = 79$$
9. $$72 : 6 + 6 \times 5 = 12 + 30 = 42$$

Ответ: 1) 42; 2) 66; 3) 65; 4) 2; 5) 17; 6) 40; 7) 71; 8) 79; 9) 42