14+15=1-611=1÷67=12-13=15×15=0÷1910=0.9+99×0.9=(56+14)×12=34:X=3:12.-六年级数学

题目简介

14+15=1-611=1÷67=12-13=15×15=0÷1910=0.9+99×0.9=(56+14)×12=34:X=3:12.-六年级数学

题目详情

1
4
+
1
5
=
1-
6
11
=
6
7
=
1
2
-
1
3
=
1
5
×
1
5
=
19
10
=
0.9+99×0.9=
5
6
+
1
4
)×12=
3
4
:X=3:12
题型:解答题难度:中档来源:不详

答案

class="stub"1
4
+class="stub"1
5
=class="stub"9
20
1-class="stub"6
11
=class="stub"5
11
class="stub"6
7
=class="stub"7
6
class="stub"1
2
-class="stub"1
3
=class="stub"1
6
class="stub"1
5
×class="stub"1
5
=class="stub"1
25
class="stub"19
10
=0;
0.9+99×0.9,
=0.9×(99+1),
=0.9×100,
=90;

class="stub"5
6
+class="stub"1
4
)×12,
=class="stub"5
6
×12+class="stub"1
4
×12,
=10+3,
=13;

class="stub"3
4
:X=3:12

3x=class="stub"3
4
×12,
3x=9,
3x÷3=9÷3,
x=3.
故答案为:class="stub"9
20
class="stub"5
11
class="stub"7
6
class="stub"1
6
class="stub"1
25
,0,90,13,x=3.

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