神机妙算:2842÷14+74×389÷(56-34)3.6×99+3.634÷(35×38)45×67+17÷5472×(59-512)-数学

题目简介

神机妙算:2842÷14+74×389÷(56-34)3.6×99+3.634÷(35×38)45×67+17÷5472×(59-512)-数学

题目详情

神机妙算:
2842÷14+74×3
8
9
÷(
5
6
-
3
4

3.6×99+3.6
3
4
÷(
3
5
×
3
8

4
5
×
6
7
+
1
7
÷
5
4

72×(
5
9
-
5
12
题型:解答题难度:中档来源:不详

答案

(1)2842÷14+74×3
=2848÷7÷2+74×3,
=203+222,
=425;

(2)class="stub"8
9
÷( class="stub"5
6
-class="stub"3
4

=class="stub"8
9
×12,
=10class="stub"2
3


(3)3.6×99+3.6
=(99+1)×3.6,
=100×3.6,
=360;

(4)class="stub"3
4
÷( class="stub"3
5
×class="stub"3
8

=class="stub"3
4
×class="stub"40
9

=class="stub"10
3


(5)class="stub"4
5
×class="stub"6
7
+class="stub"1
7
÷class="stub"5
4

=class="stub"4
5
×class="stub"6
7
+class="stub"1
7
×class="stub"4
5

=(class="stub"6
7
+class="stub"1
7
)×class="stub"4
5

=1×class="stub"4
5

=class="stub"4
5


(6)72×(class="stub"5
9
-class="stub"5
12

=72×class="stub"5
9
-72×class="stub"5
12

=40-30,
=10.

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