口算.125÷0.5=112-112÷112=1.25×34×8=47×5.6=15÷5×15×5=412×0×412=120×(115+112)=37+0.29+47=315-29-79=(34-2

题目简介

口算.125÷0.5=112-112÷112=1.25×34×8=47×5.6=15÷5×15×5=412×0×412=120×(115+112)=37+0.29+47=315-29-79=(34-2

题目详情

口算.
1
2
5
÷0.5=
1
1
2
-1
1
2
÷1
1
2
=
1.25×
3
4
×8=
4
7
×5.6=
1
5
÷5×
1
5
×5=
4
1
2
×0×4
1
2
=
120×(
1
15
+
1
12
)=
3
7
+0.29+
4
7
=
3
1
5
-
2
9
-
7
9
=
3
4
-
2
5
)×20=
题型:解答题难度:中档来源:不详

答案

1class="stub"2
5
÷0.5=2.8,
1class="stub"1
2
-1class="stub"1
2
÷1class="stub"1
2
=class="stub"1
2
1.25×class="stub"3
4
×8=7class="stub"1
2
class="stub"4
7
×5.6=3.2,
class="stub"1
5
÷5×class="stub"1
5
×5=class="stub"1
25
4class="stub"1
2
×0×4class="stub"1
2
=0,
120×(class="stub"1
15
+class="stub"1
12
)=18,
class="stub"3
7
+0.29+class="stub"4
7
=1.29,
3class="stub"1
5
-class="stub"2
9
-class="stub"7
9
=2class="stub"1
5
class="stub"3
4
-class="stub"2
5
)×20=7.
故答案为:2.8,class="stub"1
2
7class="stub"1
2
,3.2,class="stub"1
25
,0,18,1.29,2class="stub"1
5
,7.

更多内容推荐