(47-421+13)×420.42×137+3181712÷3.6×6191513×7+323÷173213-14×3.634×119÷325-数学

题目简介

(47-421+13)×420.42×137+3181712÷3.6×6191513×7+323÷173213-14×3.634×119÷325-数学

题目详情

4
7
-
4
21
+
1
3
)×42
0.42×1
3
7
+3
1
8
1
7
12
÷3.6×
6
19
15
1
3
×7+3
2
3
÷
1
7
3
2
13
-
1
4
×3.6
3
4
×1
1
9
÷3
2
5
题型:解答题难度:中档来源:不详

答案

(1)(class="stub"4
7
-class="stub"4
21
+class="stub"1
3
)×42,
=class="stub"4
7
×42-class="stub"4
21
×42+class="stub"1
3
×42,
=24-8+12,
=16+12,
=28;

(2)0.42×1class="stub"3
7
+3class="stub"1
8

=0.6+3class="stub"1
8

=3.725;

(3)1class="stub"7
12
÷3.6×class="stub"6
19

=1class="stub"7
12
×class="stub"5
18
×class="stub"6
19

=class="stub"5
36


(4)15class="stub"1
3
×7+3class="stub"2
3
÷class="stub"1
7

=15class="stub"1
3
×7+3class="stub"2
3
×7,
=(15class="stub"1
3
+3class="stub"2
3
)×7,
=19×7,
=133;

(5)3class="stub"2
13
-class="stub"1
4
×3.6,
=3class="stub"2
13
-0.9,
=class="stub"293
130


(6)class="stub"3
4
×1class="stub"1
9
÷3class="stub"2
5

=class="stub"3
4
×class="stub"10
9
×class="stub"5
17

=class="stub"25
102

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