Question

2. Efectuează
2 x 10 + 72 x 100 =
(64 + 35) x 100 =
(245 - 179) x 10 =
732 x 10 - 45 x 100 =
57 x (247 - 147)
69 x 100 - (25 x 10) x 2 =
85 x 100 - (47 x 10 + 362) x 3 =
(572 + 45 x 100) - 36 x 10 =​

Answer 1

$2 \times 10 + 72 \times 100 = 20 + 7200 = 7220$

$(64 + 35) \times 100 = 99 \times 100 = 9900$

$(245 - 179) \times 10 = 66 \times 10 = 660$

$732 \times 10 - 45 \times 100 = 7320 - 4500 = 2820$

$57 \times (247 - 147) = 57 \times 100 = 5700$

$69 \times 100 - (25 \times 10) \times 2 = 6900 - 250 \times 2 = 6900 - 500 = 6400$

$85 \times 100 - (47 \times 10 + 362) \times 3 = 8500 - 832 \times 3 = 8500 - 2496 = 6004$

$(572 + 45 \times 100) - 36 \times 10 = 5072 - 360 = 4712$

Explicație pas cu pas:

Sper ca te am ajutat spor la scris !!!!!