Verified answer

а)

13,242 * 2 + 63,297 = 26,484 + 63,297 = 89,781

31,202 * 3 - 80,090 = 93,606 - 80,090 = 13,516

73,865 + 84,844 ÷ 2 = 73,865 + 42,422 = 116,287

700,000 - 639,963 ÷ 3 = 700,000 - 213,321 = 486,679

б)

84 845:2=42 422(1 остаток)

93 368:3=31 122(2 остатка)

45 869:4=11 467(1 остаток)

65 587:5=13 117(2 остатка)