Question

выполни вычисления удобным способом .
654-(289+354)=
728-(453-153)=
128*3+172*3=
5*178-5*108=
796:4-596:4=
458:3+142:3=

Answer 1

1) 654 - (289 + 354) = 654 - 289 - 354 = (654 - 354) - 289 = 300 - 289 = 11

2) 728 - (453 - 153) = 728 - 300 = 428

3) 128 * 3 + 172 * 3 = (128 + 172) * 3 = 300 * 3 = 900

4) 5 * 178 - 5 * 108 = 5 * (178 - 108) = 5 * 70 = 350

5) 796 : 4 - 596 : 4 = (796 - 596) : 4 = 200 : 4 = 50

6) 458 : 3 + 142 : 3 = (458 + 142) : 3 = 600 : 3 = 200