(45.9-32.7)/8/0.125能用简便方法计算吗,如果能,怎么简便

夏余伟2022-10-04 11:39:541条回答

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jiangyingz 共回答了16个问题 | 采纳率93.8%
(45.9-32.7)÷8÷0.125
=13.2÷(8×0.125)
=13.2÷1
=13.2
1年前

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简便计算 (1)(45.9-32.7)÷8÷0.125 (2)9.6÷0.8÷0.4 (3)8.5
简便计算
(1)(45.9-32.7)÷8÷0.125
(2)9.6÷0.8÷0.4
(3)8.54×7.2÷0.854
(4)125÷(2.5×0.25)
angel3061年前1
瓜藤 共回答了24个问题 | 采纳率95.8%
怎样简便就怎样算. 21.27-3.9+0.73-16.1 (45.9-32.7)÷8÷0.125 16.8×10.1
怎样简便就怎样算.
21.27-3.9+0.73-16.1 (45.9-32.7)÷8÷0.125
16.8×10.1 6.73×5.8+0.42×67.3
68.4×99 32×0.25×1.25.
nemiya11年前1
林天飞翔 共回答了30个问题 | 采纳率86.7%
解题思路:(1)根据加法交换律和连减的简便方法计算即可;
(2)先算小括号,再根据连除的简便方法计算即可;
(3)(4)(5)根据乘法分配律进行计算;
(6)先变形为4×8×0.25×1.25,再根据乘法交换律及结合律计算.

(1)21.27-3.9+0.73-16.1
=(21.27+0.73)-(3.9+16.1)
=22-20
=2;

(2)(45.9-32.7)÷8÷0.125
=13.2÷(8×0.125)
=13.2÷1
=13.2;

(3)16.8×10.1
=16.8×(10+0.1)
=168+1.68
=169.68;

(4)6.73×5.8+0.42×67.3
=67.3×0.58+0.42×67.3
=67.3×(0.58+0.42)
=67.3×1
=67.3;

(5)68.4×99
=68.4×(100-1)
=6840-68.4
=6771.6;

(6)32×0.25×1.25
=4×8×0.25×1.25
=(4×0.25)×(8×1.25)
=1×10
=10.

点评:
本题考点: 小数四则混合运算;运算定律与简便运算.

考点点评: 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.