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看谁都能算对!(能简算的请写出简算过程)624-3.2×1.5÷0.19.43+0.78-2

2022-08-14 02:44:47 问答库 阅读 200 次

问题详情

看谁都能算对!(能简算的请写出简算过程)624-3.2×1.5÷0.19.43+0.78-2.43

2

3

+(1

2

+2

3

)×2

7

16

27

×5+11

27

÷1

5

5

6

-[(1

5

+1

3

)÷8

9

].

参考答案

(1)624-3.2×1.5÷0.1,
=624-4.8÷0.1,
=624-48,
=576;

(2)9.43+0.78-2.43,
=9.43-2.43+0.78,
=7+0.78,
=7.78;

(3)23+(12+23)×27,
=23+76×27,
=23+13,
=1;

(4)1627×5+1127÷15,
=1627×5+1127×5,
=(1627+1127)×5,
=1×5,
=5;

(5)56-[(15+13)÷89],
=56-[815÷89],
=56-35,
=730.

考点:过程