看谁算得准(能简算的要简算).762-450÷18×251.5×(3.8-0.8)÷0.98×27+57÷18(1-1100×70)÷2757÷[1÷(23-15)]45+(36+95)÷9.-数学

题目简介

看谁算得准(能简算的要简算).762-450÷18×251.5×(3.8-0.8)÷0.98×27+57÷18(1-1100×70)÷2757÷[1÷(23-15)]45+(36+95)÷9.-数学

题目详情

看谁算得准(能简算的要简算).
762-450÷18×25
1.5×(3.8-0.8)÷0.9
2
7
+
5
7
÷
1
8
(1-
1
100
×70)÷
2
7
5
7
÷[1÷(
2
3
-
1
5
)]
4
5
+(36+
9
5
)÷9.
题型:解答题难度:中档来源:不详

答案

(1)762-450÷18×25
=762-625,
=137;
(2)1.5×(3.8-0.8)÷0.9,
=1.5×3÷0.9,
=5;
(3)8×class="stub"2
7
+class="stub"5
7
÷class="stub"1
8

=8×class="stub"2
7
+class="stub"5
7
×8,
=(class="stub"2
7
+class="stub"5
7
)×8,
=1×8,
=8;
(4)(1-class="stub"1
100
×70)÷class="stub"2
7

=(1-class="stub"7
10
÷class="stub"2
7

=class="stub"3
10
×class="stub"7
2

=class="stub"21
20

(5)class="stub"5
7
÷[1÷(class="stub"2
3
-class="stub"1
5
)]
=class="stub"5
7
÷[1÷class="stub"7
15
],
=class="stub"5
7
×class="stub"7
15

=class="stub"1
3

(6)class="stub"4
5
+(36+class="stub"9
5
)÷9
=class="stub"4
5
+36×class="stub"1
9
+class="stub"9
5
×class="stub"1
9

=class="stub"4
5
+class="stub"1
5
+4,
=5.

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