计算下面各题.(能简便的就简便)715×14+715(712+124)÷12928×14×4912÷56×512145÷25÷1714÷56×512(514+57)÷6713×(45-57)-六年级数

题目简介

计算下面各题.(能简便的就简便)715×14+715(712+124)÷12928×14×4912÷56×512145÷25÷1714÷56×512(514+57)÷6713×(45-57)-六年级数

题目详情

计算下面各题.(能简便的就简便)
7
15
×14+
7
15
7
12
+
1
24
÷
1
2
9
28
×14×
4
9
12÷
5
6
×
5
12
14
5
÷
2
5
÷
1
7
1
4
÷
5
6
×
5
12
5
14
+
5
7
÷
6
7
1
3
×
4
5
-
5
7
题型:解答题难度:中档来源:不详

答案

(1)class="stub"7
15
×14+class="stub"7
15

=class="stub"7
15
×(14+1)
=class="stub"7
15
×15
=7;

(2)(class="stub"7
12
+class="stub"1
24
÷class="stub"1
2

=class="stub"7
12
×
2+class="stub"1
24
×
2
=class="stub"7
6
+class="stub"1
12

=1class="stub"1
4


(3)class="stub"9
28
×
14×class="stub"4
9

=class="stub"9
28
×class="stub"4
9
×14
=class="stub"1
7
×
14
=2;

(4)12÷class="stub"5
6
×class="stub"5
12

=12×class="stub"5
12
÷class="stub"5
6

=5÷class="stub"5
6

=6;

(5)class="stub"14
5
÷class="stub"2
5
÷class="stub"1
7

=class="stub"14
5
÷(class="stub"2
5
×class="stub"1
7

=class="stub"14
5
÷class="stub"2
35

=49;

(6)class="stub"1
4
÷class="stub"5
6
×class="stub"5
12

=class="stub"3
10
×class="stub"5
12

=class="stub"1
8


(7)(class="stub"5
14
+class="stub"5
7
÷class="stub"6
7

=class="stub"15
14
÷class="stub"6
7

=1class="stub"1
4


(8)class="stub"1
3
×
class="stub"4
5
-class="stub"5
7

=class="stub"1
3
×class="stub"3
35

=class="stub"1
35

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