问题
填空题
2828×33-7777×2=______.
答案
2828×33-7777×2,
=707×132-707×22,
=707×(132-22),
=707×110,
=77770;
故答案为:77770.
2828×33-7777×2=______.
2828×33-7777×2,
=707×132-707×22,
=707×(132-22),
=707×110,
=77770;
故答案为:77770.