计算下面各题,能简算的要用简便方法计算.①73.25+47+26.75+37②12.5×2.5×32③1127×17+1627÷7④23.2×15+33.8÷2.6⑤(45+14)÷73+710⑥14

题目简介

计算下面各题,能简算的要用简便方法计算.①73.25+47+26.75+37②12.5×2.5×32③1127×17+1627÷7④23.2×15+33.8÷2.6⑤(45+14)÷73+710⑥14

题目详情

计算下面各题,能简算的要用简便方法计算.
①73.25+
4
7
+26.75+
3
7
②12.5×2.5×32
11
27
×
1
7
+
16
27
÷7
④23.2×15+33.8÷2.6⑤(
4
5
+
1
4
)÷
7
3
+
7
10
1
4
÷(3-
5
13
-
8
13
题型:解答题难度:中档来源:不详

答案

①73.25+class="stub"4
7
+26.75+class="stub"3
7

=(73.25+26.75)+(class="stub"4
7
+class="stub"3
7
),
=100+1,
=101;

②12.5×2.5×32,
=(12.5×8)×(2.5×4),
=100×10,
=1000;

class="stub"11
27
×class="stub"1
7
+class="stub"16
27
÷
7,
=class="stub"11
27
×class="stub"1
7
+class="stub"16
27
×class="stub"1
7

=class="stub"1
7
×(class="stub"11
27
+class="stub"16
27
),
=class="stub"1
7
×
1,
=class="stub"1
7


④23.2×15+33.8÷2.6,
=348+13,
=361;

⑤(class="stub"4
5
+class="stub"1
4
)÷class="stub"7
3
+class="stub"7
10

=(class="stub"16
20
+class="stub"5
20
)×class="stub"3
7
+class="stub"7
10

=class="stub"21
20
×class="stub"3
7
+class="stub"7
10

=class="stub"9
20
+class="stub"14
20

=class="stub"23
20

=1class="stub"3
20


class="stub"1
4
÷(3-class="stub"5
13
-class="stub"8
13
),
=class="stub"1
4
÷[3-(class="stub"5
13
+class="stub"8
13
)],
=class="stub"1
4
÷[3-1],
=class="stub"1
4
×class="stub"1
2

=class="stub"1
8

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