计算下面各题,能简算的要简算.2842÷14+74×347+15-37+455.2-11÷7-17×334×4÷4×3465÷[(34-23)÷56]1+12+14+18+116+132.-数学

题目简介

计算下面各题,能简算的要简算.2842÷14+74×347+15-37+455.2-11÷7-17×334×4÷4×3465÷[(34-23)÷56]1+12+14+18+116+132.-数学

题目详情

计算下面各题,能简算的要简算.
2842÷14+74×3
4
7
+
1
5
-
3
7
+
4
5
5.2-11÷7-
1
7
×3
3
4
×4÷4×
3
4
6
5
÷[(
3
4
-
2
3
)÷
5
6
]
1+
1
2
+
1
4
+
1
8
+
1
16
+
1
32
题型:解答题难度:中档来源:不详

答案

(1)2842÷14+74×3,
=203+222,
=425;
(2)class="stub"4
7
+class="stub"1
5
-class="stub"3
7
+class="stub"4
5

=(class="stub"4
7
-class="stub"3
7
)+(class="stub"4
5
+class="stub"1
5
),
=class="stub"1
7
+1,
=1class="stub"1
7

(3)5.2-11÷7-class="stub"1
7
×3,
=5.2-(11×class="stub"1
7
+class="stub"1
7
×3),
=5.2-(11+3)×class="stub"1
7

=5.2-14×class="stub"1
7

=5.2-2,
=3.2;
(4)class="stub"3
4
×4÷4×class="stub"3
4

=3÷4×class="stub"3
4

=class="stub"3
4
×class="stub"3
4

=class="stub"9
16

(5)class="stub"6
5
÷[(class="stub"3
4
-class="stub"2
3
)÷class="stub"5
6
],
=class="stub"6
5
÷[class="stub"1
12
×class="stub"6
5
],
=class="stub"6
5
÷class="stub"1
10

=12;
(6)1+class="stub"1
2
+class="stub"1
4
+class="stub"1
8
+class="stub"1
16
+class="stub"1
32

=1+(class="stub"16
32
+class="stub"8
32
+class="stub"4
32
+class="stub"2
32
+class="stub"1
32
),
=1+class="stub"31
32

=1class="stub"31
32

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