问题 解答题
选择你喜欢的方法计算
(1)4500+500÷25
(2)907×101-907
(2)0.5×[12.2÷(3.7+2.4]
(4)(
3
8
+
1
5
)×40+
7
15
答案

(1)4500+500÷25,

=4500+20,

=4520;

(2)907×101-907,

=907×(101-1),

=907×100,

=90700;

(2)0.5×[12.2÷(3.7+2.4)],

=0.5×[12.2÷6.1],

=0.5×2,

=1;

(4)(

3
8
+
1
5
)×40+
7
15

=

3
8
×40+
1
5
×40+
7
15

=15+8+

7
15

=23

7
15

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