Вычислительный математика

1) 32:8 + 7×5 = 4 + 35 = 39

2) (7 + 24 : 3) : 5 =( 7 + 8) : 5 = 15 : 5 = 3

3) 7 × 5 - 7 × 4 + 360 = 35 - 28 + 360 = 7 + 360 = 367

4) 905 - ( 25 + 15) : 8 = 905 - 40 : 8 = 905 - 5 = 900

5) 675 + 25 - 5 × 7 = 700 - 35 = 665

6) ( 7 + 21) : 7 + 100 = 28 : 7 + 100 = 4 + 100 = 104