合理、灵活地计算.①(12.5×8-40)÷60%②27×1124+27÷2413③(16÷512-16)÷715④15÷[(23+15)×113].-数学

题目简介

合理、灵活地计算.①(12.5×8-40)÷60%②27×1124+27÷2413③(16÷512-16)÷715④15÷[(23+15)×113].-数学

题目详情

合理、灵活地计算.
①(12.5×8-40)÷60%
2
7
×
11
24
+
2
7
÷
24
13

③(
1
6
÷
5
12
-
1
6
)÷
7
15

1
5
÷[(
2
3
+
1
5
)×
1
13
].
题型:解答题难度:中档来源:不详

答案

(1)(12.5×8-40)÷60%,
=(100-40)÷60%,
=60÷60%,
=100;

(2)class="stub"2
7
×class="stub"11
24
+class="stub"2
7
÷class="stub"24
13

=class="stub"2
7
×(class="stub"11
24
+class="stub"13
24
),
=class="stub"2
7
×1,
=class="stub"2
7


(3)(class="stub"1
6
÷class="stub"5
12
-class="stub"1
6
)÷class="stub"7
15

=(class="stub"2
5
-class="stub"1
6
÷class="stub"7
15

=class="stub"7
30
÷class="stub"7
15

=0.5;

(4)class="stub"1
5
÷[(class="stub"2
3
+class="stub"1
5
)×class="stub"1
13
],
=class="stub"1
5
÷[class="stub"13
15
×class="stub"1
13
],
=class="stub"1
5
÷class="stub"1
15

=3.

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