口算.415+715=56-16=25+25=34-14=12+12=13+14=15-18=2-34=1-18-38=-数学

题目简介

口算.415+715=56-16=25+25=34-14=12+12=13+14=15-18=2-34=1-18-38=-数学

题目详情

口算.
4
15
+
7
15
=
5
6
-
1
6
=
2
5
+
2
5
=
3
4
-
1
4
=
1
2
+
1
2
=
1
3
+
1
4
=
1
5
-
1
8
=
2-
3
4
=
1-
1
8
-
3
8
=
题型:解答题难度:中档来源:不详

答案

class="stub"4
15
+class="stub"7
15
=class="stub"11
15


class="stub"5
6
-class="stub"1
6
=class="stub"2
3


class="stub"2
5
+class="stub"2
5
=class="stub"4
5


class="stub"3
4
-class="stub"1
4
=class="stub"1
2


class="stub"1
2
+class="stub"1
2
=1;

class="stub"1
3
+class="stub"1
4
=class="stub"7
12


class="stub"1
5
-class="stub"1
8
=class="stub"3
40


2-class="stub"3
4
=1class="stub"1
4


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

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