Срооооочноооооо 6 класс. Решите образцы

a) = 73 * ( 46 + 54) + 85 * (54+46) = 73 * 100 + 85 * 100 = 7300 + 8500 = 15800

б) = 98 * ( 1742 + 558) - 18 * ( 1742 + 558) = 98 * 2300 - 18 * 2300 = 2300 * 98-18) = 2300 * 80 = 184000

в) = 788 * ( 1537 - 937) +212 * (1537 - 937) = 788 * 600 + 212 * 600 = 600 * (788 + 212) = 600 * 1000 = 600000

г) = 777 * (454 + 746) - 77 * (454 + 746) = 777 * 1200 - 77 * 1200 = 1200 * ( 777 - 77) = 1200 *700 = 840000

д) = 423 * ( 759 - 659) + 177 * (628 - 528) = 423 * 100 + 177 * 100 = 100 * (423 + 177) = 100 * 600 = 60000