Question

5. Efectueaza:
145 x 8 + 470 =
230 x 5 + 6 430 =
(306 + 123) x 4 - 724 =
6 435 - 127 x3
436 + 503 x 7 =
7354 - 145 - 372 73

Answer 1

$145 \times 8 + 470 = 1630 \\ 230 \times 5 + 6430 = 7580 \\ (306 + 123) \times 4 - 724 = 992 \\ 6435 - 127 \times 3 = 6054$

$436 + 503 \times 7 = 3957 \\ 7354 - 145 - 37273 = - 30064$