计算下面各题,能简算的要简算.(1912-37)-(47+712)516×[8.6÷(3.7+35)](34×18+34×78)÷132×(0.25+34)÷23-25.-数学

题目简介

计算下面各题,能简算的要简算.(1912-37)-(47+712)516×[8.6÷(3.7+35)](34×18+34×78)÷132×(0.25+34)÷23-25.-数学

题目详情

计算下面各题,能简算的要简算.
19
12
-
3
7
)-(
4
7
+
7
12

5
16
×[8.6÷(3.7+
3
5
)]
3
4
×
1
8
+
3
4
×
7
8
)÷
1
3

2×(0.25+
3
4
)÷
2
3
-
2
5
题型:解答题难度:中档来源:不详

答案

(1)(class="stub"19
12
-class="stub"3
7
)-(class="stub"4
7
+class="stub"7
12
),
=class="stub"19
12
-class="stub"3
7
-class="stub"4
7
-class="stub"7
12

=class="stub"19
12
-class="stub"7
12
-class="stub"3
7
-class="stub"4
7

=(class="stub"19
12
-class="stub"7
12
)-(class="stub"3
7
+class="stub"4
7
),
=1-1,
=0;

(2)class="stub"5
16
×[8.6÷(3.7+class="stub"3
5
)],
=class="stub"5
16
×[8.6÷4.3],
=class="stub"5
16
×2,
=class="stub"5
8


(3)(class="stub"3
4
×class="stub"1
8
+class="stub"3
4
×class="stub"7
8
)÷class="stub"1
3

=[class="stub"3
4
×(class="stub"1
8
+class="stub"7
8
)]÷class="stub"1
3

=[class="stub"3
4
×1]÷class="stub"1
3

=class="stub"3
4
×3,
=class="stub"9
4



(4)2×(0.25+class="stub"3
4
)÷class="stub"2
3
-class="stub"2
5

=2×1÷class="stub"2
3
-class="stub"2
5

=2÷class="stub"2
3
-class="stub"2
5

=3-class="stub"2
5

=2class="stub"3
5

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