脱式计算(能用简便方法的用简便方法计算)[(716-14)+1516]÷126134-15.37+3814-34.6323-89×38÷1275.8×99-4.210.6-(6.3+0.125÷12.

题目简介

脱式计算(能用简便方法的用简便方法计算)[(716-14)+1516]÷126134-15.37+3814-34.6323-89×38÷1275.8×99-4.210.6-(6.3+0.125÷12.

题目详情

脱式计算(能用简便方法的用简便方法计算)
[(
7
16
-
1
4
)+
15
16
1
2

61
3
4
-15.37+38
1
4
-34.63
23-
8
9
×
3
8
÷
1
27

5.8×99-4.2
10.6-(6.3+0.125÷12.5%)
题型:解答题难度:中档来源:不详

答案

(1)[(class="stub"7
16
-class="stub"1
4
)+class="stub"15
16
class="stub"1
2

=[class="stub"3
16
+class="stub"15
16
]÷class="stub"1
2

=class="stub"18
16
÷class="stub"1
2

=2.25;

(2)61class="stub"3
4
-15.37+38class="stub"1
4
-34.63,
=(61class="stub"3
4
+38class="stub"1
4
)-(15.37+34.63),
=100-50,
=50;

(3)23-class="stub"8
9
×class="stub"3
8
÷class="stub"1
27

=23-class="stub"3
9
÷class="stub"1
27

=23-9,
=14;

(4)5.8×99-4.2,
=5.8×(100-1)-4.2,
=580-5.8-4.2,
=580-(5.8+4.2),
=580-10,
=570;

(5)10.6-(6.3+0.125÷12.5%),
=10.6-(6.3+1),
=10.6-7.3,
=3.3.

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