Question

Вычислите: а)7×55+7×45+3×45+3×55б)8×2+2×92+8×98+2×8в)37×59+37×41+63×59+41×63г)356×73+664×27+73×644+27×356​

Answer 1

7*55+7*45+3*45+3*55=1000

8×2+2×92+8×98+2×8=1000

37×59+37×41+63×59+41×63=10000

356×73+664×27+73×644+27×356=102000

Answer 2

а) 7 × 55 + 7 × 45 + 3 × 45 + 3 × 55 = 385 + 315 + 135 + 165 = 1,000

б) 8 × 2 + 2 × 92 + 8 × 98 + 2 × 8 = 16 + 184 + 784 + 16 = 1,000

в) 37 × 59 + 37 × 41 + 63 × 59 + 41 × 63 = 2,183 + 1,517 + 3,717 + 2,583 = 10,000

г) 356 × 73 + 664 × 27 + 73 × 644 + 27 × 356 = 25,988 + 17,928 + 47,012 + 9,612 = 100,540