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计算下面各题:(能简便计算的要简便计算) (1)88×(38+144)(2)1021×122

2022-08-14 02:50:32 问答库 阅读 200 次

问题详情

计算下面各题:(能简便计算的要简便计算) (1)88×(3

8

+1

44

)(2)10

21

×12

25

×7

8

(3)23

25

×1

4

+1

4

×2

25

(4)3

4

×(9

10

-5

6

)(5)14

15

×14+14

15

(6)4-8

25

×15

4

参考答案

(1)88×(38+144),
=88×38+88×144,
=33+2,
=35;

(2)1021×1225×78,
=835×78,
=15;

(3)2325×14+14×225,
=(2325+225)×14,
=1×14,
=14;

(4)34×(910-56),
=34×115,
=120;

(5)1415×14+1415
=1415×(14+1),
=1415×15,
=14;

(6)4-825×154,
=4-65,
=245.

考点: