能简算的要简算.(45-23)×1540%×13+23÷5239×12×7130.125×411+18÷112+12.5%×511.-数学

题目简介

能简算的要简算.(45-23)×1540%×13+23÷5239×12×7130.125×411+18÷112+12.5%×511.-数学

题目详情

能简算的要简算.
4
5
-
2
3
)×15

40%×
1
3
+
2
3
÷
5
2
39×
1
2
×
7
13
0.125×
4
11
+
1
8
÷
11
2
+12.5%×
5
11
题型:解答题难度:中档来源:不详

答案

(1)(class="stub"4
5
-class="stub"2
3
)×15,
=class="stub"4
5
×15-class="stub"2
3
×15,
=12-10,
=2;

(2)40%×class="stub"1
3
+class="stub"2
3
÷class="stub"5
2

=class="stub"2
5
×class="stub"1
3
+class="stub"2
3
×class="stub"2
5

=class="stub"2
5
×(class="stub"1
3
+class="stub"2
3
),
=class="stub"2
5
×1,
=class="stub"2
5


(3)39×class="stub"1
2
×class="stub"7
13

=(39×class="stub"7
13
)×class="stub"1
2

=21×class="stub"1
2

=class="stub"21
2


(4)0.125×class="stub"4
11
+class="stub"1
8
÷class="stub"11
2
+12.5%×class="stub"5
11

=0.125×class="stub"4
11
+0.125×class="stub"2
11
+0.125×class="stub"5
11

=0.125×(class="stub"4
11
+class="stub"2
11
+class="stub"5
11
),
=0.125×1,
=0.125.

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