计算能简算的要简算1021×1225÷8789-(29-13)29+1315+79-41537-713-613+47.-五年级数学

题目简介

计算能简算的要简算1021×1225÷8789-(29-13)29+1315+79-41537-713-613+47.-五年级数学

题目详情

计算能简算的要简算
10
21
×
12
25
÷
8
7

8
9
-(
2
9
-
1
3

2
9
+
13
15
+
7
9
-
4
15

3
7
-
7
13
-
6
13
+
4
7
题型:解答题难度:中档来源:不详

答案

(1)class="stub"10
21
×class="stub"12
25
÷class="stub"8
7

=class="stub"8
35
÷class="stub"8
7

=class="stub"1
5


(2)class="stub"8
9
-(class="stub"2
9
-class="stub"1
3

=class="stub"8
9
-class="stub"2
9
+class="stub"1
3

=class="stub"2
3
+class="stub"1
3

=1;

(3)class="stub"2
9
+class="stub"13
15
+class="stub"7
9
-class="stub"4
15

=(class="stub"2
9
+class="stub"7
9
)+(class="stub"13
15
-class="stub"4
15

=1+class="stub"3
5

=1class="stub"3
5


(4)class="stub"3
7
-class="stub"7
13
-class="stub"6
13
+class="stub"4
7

=(class="stub"3
7
+class="stub"4
7
)-(class="stub"7
13
+class="stub"6
13

=1-1
=0.

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