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用简便方法计算. 316×(49+23)514÷1112×73518×4÷4×18736÷1

2022-08-14 02:20:48 问答库 阅读 200 次

问题详情

用简便方法计算. 3

16

×(4

9

+2

3

)5

14

÷11

12

×7

35

1

8

×4÷4×1

8

7

36

÷11

12

÷5

33

57×3

56

1

8

+1

7

+7

8

÷7

5

(24+4

9

)÷42

3

-5

7

+1

3

4

25

+4

25

×10.

参考答案

(1)316×(49+23
=316×49+316×23
=112+18
=524

(2)514÷1112×735
=514×735×1211
=114×1211
=677

(3)18×4÷4×18
=18×4×14×18
=(18×18)×(4×14
=164×1
=164

(4)736÷1112÷533
=736÷(1112×533
=736÷536
=75

(5)57×356
=(56+1)×356
=56×356+1×356
=3+356
=3356

(6)18+17+78÷75
=18+17+58
=18+58+17
=34+17
=2528

(7)(24+49)÷4
=(24+49)×14
=24×14+49×14
=6+19
=619

(8)23-57+13
=23+13-57
=1-57
=27

(9)425+425×10
=425×1+425×10
=425×(1+10)
=425×11
=4425

考点:方法