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脱式计算.(能简算的要简算)0.375×134+58×1.75(14+56+23)×1211

2022-08-14 02:42:19 问答库 阅读 200 次

问题详情

脱式计算.(能简算的要简算)
0.375×13

4

+5

8

×1.75(1

4

+5

6

+2

3

)×1211

5

×12.5×8

3.14÷5+3.14×4

5

7

20

+(91

4

-73

5

)÷23

4

41

5

-1.65-1.35.

参考答案

(1)0.375×134+58×1.75,
=38×134+58×134,
=(38+58)×134,
=1×134,
=134.

(2)(14+56+23)×12,
=14×12+56×12+23×12,
=3+10+8,
=21.

(3)115×12.5×8,
=65×(12.5×8),
=65×100,
=120.

(4)3.14÷5+3.14×45,
=3.14×15+3.14×45,
=3.14×(15+45),
=3.14×1,
=3.14.

(5)720+(914-735)÷234,
=720+(374-385)÷114,
=720+(18520-15220)÷114,
=720+3320×411,
=720+1220,
=1920.

(6)415-1.65-1.35,
=415-(1.65+1.35),
=415-3,
=115.

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