脱式计算(能简算的要简算)(1)10.2×43(2)3.64÷4+4.36×25%(3)[56-(25+13)]×57.-数学

题目简介

脱式计算(能简算的要简算)(1)10.2×43(2)3.64÷4+4.36×25%(3)[56-(25+13)]×57.-数学

题目详情

脱式计算(能简算的要简算)
(1)10.2×43(2)3.64÷4+4.36×25%(3)[
5
6
-(
2
5
+
1
3
)]×
5
7
题型:解答题难度:中档来源:不详

答案

(1)10.2×43,
=(10+0.2)×43,
=10×43+0.2×43,
=430+8.6
=438.6;

(2)3.64÷4+4.36×25%,
=3.64×class="stub"1
4
+4.36×class="stub"1
4

=(3.64+4.36)×class="stub"1
4

=8×class="stub"1
4

=2;

(3)[class="stub"5
6
-(class="stub"2
5
+class="stub"1
3
)]×class="stub"5
7

=[class="stub"5
6
-class="stub"11
15
class="stub"5
7

=class="stub"1
10
×class="stub"5
7

=class="stub"1
14

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