脱式计算.(能简算的要简算)910+1315-35;23-12+1112;817-723+917.-数学

题目简介

脱式计算.(能简算的要简算)910+1315-35;23-12+1112;817-723+917.-数学

题目详情

脱式计算.(能简算的要简算)
9
10
+
13
15
-
3
5

2
3
-
1
2
+
11
12

8
17
-
7
23
+
9
17
题型:解答题难度:中档来源:不详

答案

(1)class="stub"9
10
+class="stub"13
15
-class="stub"3
5

=class="stub"27
30
+class="stub"26
30
-class="stub"18
30

=class="stub"7
6


(2)class="stub"2
3
-class="stub"1
2
+class="stub"11
12

=class="stub"8
12
-class="stub"6
12
+class="stub"11
12

=class="stub"13
12


(3)class="stub"8
17
-class="stub"7
23
+class="stub"9
17

=class="stub"8
17
+class="stub"9
17
-class="stub"7
23

=1-class="stub"7
23

=class="stub"16
23

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