口算56+37=80-16=31.5+5=12-1.1=2×0.2=2.87÷0.7=30÷50=25×8=415÷25=12×23=38×45=14+15=1÷45=0×78=16+56=715-1

题目简介

口算56+37=80-16=31.5+5=12-1.1=2×0.2=2.87÷0.7=30÷50=25×8=415÷25=12×23=38×45=14+15=1÷45=0×78=16+56=715-1

题目详情

口算
56+37=80-16=31.5+5=12-1.1=
2×0.2=2.87÷0.7=30÷50=25×8=
4
15
÷
2
5
=
12×
2
3
=
3
8
×
4
5
=
1
4
+
1
5
=
4
5
=
7
8
=
1
6
+
5
6
=
7
15
-
1
15
=
题型:解答题难度:中档来源:不详

答案

56+37=93,80-16=64,31.5+5=36.5,12-1.1=10.9,
2×0.2=0.4,2.87÷0.7=4.1,30÷50=0.6,25×8=200,
class="stub"4
15
÷class="stub"2
5
=class="stub"2
3
12×class="stub"2
3
=8,
class="stub"3
8
×class="stub"4
5
=class="stub"3
10
class="stub"1
4
+class="stub"1
5
=class="stub"9
20
class="stub"4
5
=class="stub"5
4
class="stub"7
8
=0,
class="stub"1
6
+class="stub"5
6
=1,
class="stub"7
15
-class="stub"1
15
=class="stub"2
5

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