0.125÷0.25=125÷
250
250
=
12.5
12.5
÷25.
分析:商不變的性質(zhì)是:被除數(shù)和除數(shù)同時擴大或縮小相同的倍數(shù)(0除外),商不變,由此即可進行判斷.
解答:解:0.125→125擴大了1000倍,要使商不變,0.25擴大了1000倍是250;
0.25→25擴大了100倍,要使商不變,0.125擴大了100倍是12.5;
所以0.125÷0.25=125÷250=12.5÷25
故答案為:250;12.5.
點評:緊扣商不變的性質(zhì)來解決問題.
練習冊系列答案
相關(guān)習題

科目:小學數(shù)學 來源: 題型:

(2012?民樂縣模擬)脫式計算,能簡算的要簡算
9.81×0.1+0.5×98.1+0.049×981    
 2
1
4
÷[(2
1
3
-1.2)×
3
4
+0.05]
100-32×0.125×0.25
[1-(
1
2
-
1
4
)]×
2
3

查看答案和解析>>

科目:小學數(shù)學 來源: 題型:

180÷60= 12×25= 0÷90=
4×5÷4×5= 0.25×4+4= 131+218+269+182=
25×6×4= 420÷35= 36×5×4=
120÷5÷3= 198-75-25= 120-20÷5=
59億-58億= (1.3+3.5)÷0.6= 75÷2.5=
0.45÷1.25÷8= 2.5×7.6×4= 97.6÷0.02=
8.8-(0.25+0.4)= 0.25+87+0.75= 0.8-0.35×2=
0.1÷0.01×0.1= 9.9+9.9×99= 2.7×3.6+6.4×2.7=
720÷8÷9= 2.9+5.7+2.1= 2-0.16-0.64=
16.7+84.5-16.7= 6.8-(3.8+2.9)= 9×1.3+9×6.7=
5.5-5.25+5.2= 0.8×25-10= 42.8×25×4=
7.2+2.8= 0.9÷0.01= 3.5+7.6=
3×0.2×0.5= 0.96÷0.3= 1.5×0.4=
7÷0.25= 2.5×0.7×0.8= 8-2.5=
16÷1.6= 5.6×1.01= 8×(2.5+0.25)=
0.36+0.64= 64.32÷16= 72.8÷0.8=
8.4×0.2+1.6×0.2= 8.4÷4.2= 0.05×0.8=
2.56-0.37= 1.23×3= 25×0.8×0.5=
12×2.5= 3.2÷1.6= 3.5+3.5×3=
19.6÷2= 8.8÷2.2= 3.9+2.03=
7.2×0.3+2.8×0.3= 13.8+9.9= 2.4×2.5=
0.75×4= (1.5+0.25)×4= 4.2÷0.1=
4.2÷3.5= 2.14-0.9= 27+456+73=
12÷0.3= 2.87÷0.7= 13÷4=
24÷4+56÷4= 2.1×0.3÷2.1= 2.3-0÷8.1=
1.37-1.37÷1.37= 4.4÷(5×0.2)= 7×1.3=
0.96÷0.06= 0.36×0.3= 0.35÷0.7=
13.65÷13= 4×0.8×0.25×1.25= 13+0.7÷0.7=
7.05×23.7+7.05×76.3= 0.125×3.2×2.5= (12+23.1÷0.75)×0.4-5.12=
728+199= 637-201= 16×25=
1.6×[(12-7.2)÷(0.84÷2.1)]=

查看答案和解析>>

科目:小學數(shù)學 來源: 題型:

選用恰當?shù)姆椒ㄓ嬎阆旅娓黝}.
①12.5×8.8÷11 ②4.6×38.7+4.6×61+4.6×0.3
③0.125×0.25×32           ④1.7÷〔6.6-28.8÷9)〕

查看答案和解析>>

科目:小學數(shù)學 來源: 題型:解答題

脫式計算,能簡算的要簡算
9.81×0.1+0.5×98.1+0.049×981  
2數(shù)學公式÷[(2數(shù)學公式-1.2)×數(shù)學公式+0.05]
100-32×0.125×0.25
[1-(數(shù)學公式-數(shù)學公式)]×數(shù)學公式

查看答案和解析>>

科目:小學數(shù)學 來源:河南省期末題 題型:口算題

直接寫出得數(shù):
7.2+1.8= 1.6÷16=
1.5×4= 8﹣2.5=
6.4÷0.8= 1÷0.125=
8.1÷0.3= 100×0.02=
2.4×0.5= 3.2÷4=
3.5+7.6= 0.125÷0.25=
1.5+0.25= 0÷0.37=
3×0.2×0.5= 1.5×0×4=

查看答案和解析>>

同步練習冊答案