计算下列各题(能简便计算的要简算)56×(37-38)9.75-3.42-5.58125×0.25×3.2(35-14)×4738×67+67÷834+14×23.-数学

题目简介

计算下列各题(能简便计算的要简算)56×(37-38)9.75-3.42-5.58125×0.25×3.2(35-14)×4738×67+67÷834+14×23.-数学

题目详情

计算下列各题(能简便计算的要简算)
56×(
3
7
-
3
8
)9.75-3.42-5.58125×0.25×3.2
3
5
-
1
4
)×
4
7
3
8
×
6
7
+
6
7
÷8
3
4
+
1
4
×
2
3
题型:解答题难度:中档来源:不详

答案

(1)56×(class="stub"3
7
-class="stub"3
8
),
=56×class="stub"3
7
-56×class="stub"3
8

=24-21,
=3;

(2)9.75-3.42-5.58,
=9.75-(3.42+5.58),
=9.75-9,
=0.75;

(3)125×0.25×3.2,
=125×0.25×4×0.8,
=125×0.8×0.25×4,
=100×1,
=100;

(4)(class="stub"3
5
-class="stub"1
4
)×class="stub"4
7

=class="stub"3
5
×class="stub"4
7
-class="stub"1
4
×class="stub"4
7

=class="stub"12
35
-class="stub"1
7

=class="stub"12
35
-class="stub"5
35

=class="stub"1
5


(5)class="stub"3
8
×class="stub"6
7
+class="stub"6
7
÷8
=class="stub"3
8
×class="stub"6
7
+class="stub"6
7
×class="stub"1
8

=class="stub"6
7
×(class="stub"3
8
+class="stub"1
8
),
=class="stub"6
7
×class="stub"1
2

=class="stub"3
7


(6)class="stub"3
4
+class="stub"1
4
×class="stub"2
3

=class="stub"1
4
×(3+class="stub"2
3
),
=class="stub"1
4
×class="stub"11
3

=class="stub"11
12

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