下面各题,怎样计算简便就怎样计算.2002-540÷36×967.28-(1.28+0.25)2.25×1.8+17.5×0.1836×(29+712-14)715÷[1-(45-23)].-数学

题目简介

下面各题,怎样计算简便就怎样计算.2002-540÷36×967.28-(1.28+0.25)2.25×1.8+17.5×0.1836×(29+712-14)715÷[1-(45-23)].-数学

题目详情

下面各题,怎样计算简便就怎样计算.
2002-540÷36×96
7.28-(1.28+0.25)
2.25×1.8+17.5×0.18
36×(
2
9
+
7
12
-
1
4

7
15
÷[1-(
4
5
-
2
3
)].
题型:解答题难度:中档来源:不详

答案

(1)2002-540÷36×96
=2002-540÷9÷4×96,
=2002-60÷4×96,
=2002-15×6×16,
=2002-90×16,
=2002-1440,
=562;
(2)7.28-(1.28+0.25)
=7.28-1.28-0.25,
=6-0.25,
=5.75;
(3)2.25×1.8+17.5×0.18
=2.25×1.8+1.75×1.8,
=(2.25+1.75)×1.8,
=4×1.8,
=7.2;
(4)36×(class="stub"2
9
+class="stub"7
12
-class="stub"1
4

=36×class="stub"2
9
+36×class="stub"7
12
-36×class="stub"1
4

=8+21-9,
=20;
(5)class="stub"7
15
÷[1-(class="stub"4
5
-class="stub"2
3
)].
=class="stub"7
15
÷[1-(class="stub"12
15
-class="stub"10
15
)],
=class="stub"7
15
÷[1-class="stub"2
15
],
=class="stub"7
15
×class="stub"15
13

=class="stub"7
13

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