题目内容
用你喜欢的方法计算下面各题.
360÷
×360%
60%-
×
7.32×125%+2.68×125%
[(25%-
)×
]÷0.375.
360÷
9 |
10 |
60%-
5 |
8 |
2 |
5 |
7.32×125%+2.68×125%
[(25%-
1 |
12 |
3 |
16 |
分析:(1)按照从左到右的顺序计算;
(2)先算乘法,再算减法;
(3)运用乘法分配律简算;
(4)先算小括号里面的减法,再算中括号里面的乘法,最后算括号外的除法.
(2)先算乘法,再算减法;
(3)运用乘法分配律简算;
(4)先算小括号里面的减法,再算中括号里面的乘法,最后算括号外的除法.
解答:解:(1)360÷
×360%,
=400×3.6,
=1440;
(2)60%-
×
,
=0.6-0.25,
=0.35;
(3)7.32×125%+2.68×125%,
=(7.32+2.68)×1.25,
=10×1.25,
=12.5;
(4)[(25%-
)×
]÷0.375,
=[
×
]÷
,
=
×
,
=
.
9 |
10 |
=400×3.6,
=1440;
(2)60%-
5 |
8 |
2 |
5 |
=0.6-0.25,
=0.35;
(3)7.32×125%+2.68×125%,
=(7.32+2.68)×1.25,
=10×1.25,
=12.5;
(4)[(25%-
1 |
12 |
3 |
16 |
=[
1 |
6 |
3 |
16 |
3 |
8 |
=
1 |
32 |
8 |
3 |
=
1 |
12 |
点评:本题考查了四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律进行简便计算.
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