脱式计算.①(12-38)÷34②[1-(14+38)]÷14③59+79-1.625-2.375+3④[12-(34-35)]÷710.-数学

题目简介

脱式计算.①(12-38)÷34②[1-(14+38)]÷14③59+79-1.625-2.375+3④[12-(34-35)]÷710.-数学

题目详情

脱式计算.
①(
1
2
-
3
8
)÷
3
4
②[1-(
1
4
+
3
8
)]÷
1
4


5
9
+
7
9
-1.625-2.375+3④[
1
2
-(
3
4
-
3
5
)]÷
7
10
题型:解答题难度:中档来源:不详

答案

①(class="stub"1
2
-class="stub"3
8
)÷class="stub"3
4

=class="stub"1
8
÷class="stub"3
4

=class="stub"1
6


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

=(1-class="stub"5
8
)÷class="stub"1
4

=class="stub"3
8
×4
=1class="stub"1
2


class="stub"5
9
+class="stub"7
9
-1.625-2.375+3
=class="stub"4
3
-4+3
=class="stub"4
3
-1
=class="stub"1
3


④[class="stub"1
2
-(class="stub"3
4
-class="stub"3
5
)]÷class="stub"7
10

=(class="stub"1
2
-class="stub"3
20
)÷class="stub"7
10

=class="stub"7
20
×class="stub"10
7

=class="stub"1
2

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