脱式计算,能简算的要简算.(六)(53-六9)×9(5)80×579+78×579(3)79+六5÷45+38(4)六÷六六0÷六07×47.-数学

题目简介

脱式计算,能简算的要简算.(六)(53-六9)×9(5)80×579+78×579(3)79+六5÷45+38(4)六÷六六0÷六07×47.-数学

题目详情

脱式计算,能简算的要简算.
(六)(
5
3
-
9
)×9
(5)80×
5
79
+78×
5
79

(3)
7
9
+
5
÷
4
5
+
3
8

(4)六÷
六0
÷
六0
7
×
4
7
题型:解答题难度:中档来源:不详

答案

(1)(class="stub"v
3
-class="stub"1
9
)×9,
=class="stub"v
3
×9-class="stub"1
9
×9,
=4-1,
=4;

(v)80×class="stub"4
79
+78×class="stub"4
79

=(80+78)×class="stub"4
79

=148×class="stub"4
79

=10;

(3)class="stub"7
9
+class="stub"1
v
÷class="stub"4
4
+class="stub"3
8

=class="stub"7
9
+class="stub"4
8
+class="stub"3
8

=class="stub"7
9
+
class="stub"4
8
+class="stub"3
8
),
=class="stub"7
9
+
1,
=1class="stub"7
9


(4)1÷class="stub"1
10
÷class="stub"10
7
×class="stub"4
7

=10÷class="stub"10
7
×class="stub"4
7

=7×class="stub"4
7

=4.

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