(1)0.28:0.49 (2)0.32:48(3)0.15:數(shù)學(xué)公式 
(4)數(shù)學(xué)公式數(shù)學(xué)公式(3)數(shù)學(xué)公式:0.75 (6)數(shù)學(xué)公式數(shù)學(xué)公式

解:(1)0.28:0.49=(0.28÷0.07):(0.49÷0.07)=4:7,
0.28:0.49=0.28÷0.49=;

(2)0.32:48=(0.32÷0.32):(48÷0.32)=1:150,
0.32:48=0.32÷48=

(3)0.15:=(0.15÷0.15):(÷0.15)=1:1,
0.15:=0.15=1;

(4)=(×15):(×15)=9:4;
=÷=

(5):0.75=:0.75=(÷)÷(0.75)=1:6,
:0.75=÷0.75=;

(6)=(×20):(×20)=5:8,
==
分析:依據(jù)比的性質(zhì),即比的前項(xiàng)和后同時(shí)乘或除以一個(gè)不等于零的數(shù),比的大小不變,即可化簡比;依據(jù)比與除法的聯(lián)系,用比的前項(xiàng)除以后項(xiàng)得到的數(shù)就是它們的比值,據(jù)此即可求解.
點(diǎn)評:解答此題要注意:求比值結(jié)果是一個(gè)數(shù),化簡比結(jié)果是一個(gè)最簡比.
練習(xí)冊系列答案
相關(guān)習(xí)題

科目:小學(xué)數(shù)學(xué) 來源: 題型:

3.5×0.4= 2.5×0.4= 2.3×0.2= 2.1÷0.3=
7.1×0.4= 4.5÷0.15= 1-0.07= 0.42÷0.7=
12.4÷4= 2.5+1.5=  5.9×0.2= 0.48÷0.8=
0.25×1.3×4= 20÷0.01= 9÷0.01= 5.5÷1.1=
4.79+15.81= 0.3÷0.03= 0.2×0.1= 3.6+6.4=
0.56÷0.28= 1.2×0.3= 6.7-5.6= 7.25÷0.5=
4.2÷0.21= 4.3×0= 0.15÷0.5= 3.5×4=
5.32-5.3= 1.25×3.4×8= 9.6÷3.2= 3.6+2.4=
4.3-2.7+5.7= 7.2-5.6= 1.8÷0.9= 8.2×0.5=
5.6÷0.4= 8.5÷5= 5.6×0.5= 9.8÷0.2=
3.56×0.2= 3.4+1.5+4.6= 3.4×0.04= 6.12+3.48=
6÷0.12= 7.6÷4= 3.4×0.5= 5.2-3.2-1.8=
6-3.8= 7.5÷3= 3.5+5.4= 3×2.5=
3.5+6.5= 7-6.23= 8÷0.4= 0.25×2.5=
7.5÷0.5= 0.89-0.48= 3.5×0.8= 5.9-(3.2+0.9)=

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來源: 題型:

(2011?東莞模擬)
直接寫出得數(shù):
0.96÷2=
4.8÷0.3= 0.56÷0.07= 0.24×0.5=
1.5×0.5= 60×0.8= 0.42×5= 0.06×0.9=
1.6÷2= 0.28÷14= 1.64÷41= 10÷20=
2.8÷4= 4.8÷12= 5.2÷13= 12.5÷5=
0.8×1.1= 3.5×0.3= 7.2+12.8= 46.7-3.8=
3.5÷7= 350÷700= 2.79÷3= 279÷300=
9.6÷0.8= 2.4÷0.8= 10.8÷9= 0.81÷0.27=
4.2÷2= 0.63÷9= 0.63+1.7= 7-0.23=

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來源: 題型:閱讀理解

4.7+2.3= 4.5×2= 6.9-2.5= 7.2×0.8=
6×3.4= 0.62-0.32= 1.4×0.5= 0.75×100=
0.02×0.5= 3.6÷0.3= 6.3÷7= 5.6÷100=
0.75÷0.25= 0.125×8= 4.8÷0.3= 0.96÷2=
0.56÷28= 0.36÷0.4= 0.64÷0.8= 0.72÷3.6=
3.6÷24= 0.8×1.1= 7.2+12.8= 46.7-3.8=
12.8÷4= 5.2÷13= 12.5÷5= 1.64÷41=
10÷20= 24÷15= 8.65×10= 0.35×0.6=
3.08×0.01= 4.95×1000= 6.9×0.1= 0.4×0.5=
2.4÷0.8= 10.8÷9= 9.6÷0.8= 0.108÷2=
4.95÷0.9= 9.65÷0.1= 0.325×100= 2.5×8=
0.56÷0.7= 0.125×4= 3.28×0.1= 3.9÷0.13=
7.2×0.1= 0.01×0.1= 0.25×0.4= 1.6÷0.8=
1÷2.5= 1.25×0.8= 3.2÷0.04= 0÷1.7=
0.22×102= 9.6÷0.8= 5×0.24= 4.5-0.05=
3.9÷0.13 16.5÷0.5= 5×0.12= 24×0.5=
4.8×0.5= 2.8+4.2= 0.84÷2.1= 5÷0.25=
7.8÷0.01= 5.4÷0.6= 3.2÷5= 7×0.62=
0.56÷0.8= 7.4-2.8= 0.18÷0.2= 0.16÷8=
4.5×0.02= 8+7.2= 1.2×30= 0.012×0.2=
7.3×0.3= 9÷6= 3.6÷0.12= 7.8÷0.6=
2÷5= 4.5+5= 0.3÷0.6= 0.96÷0.2=
10.5×0.4= 7.3+0.27= 8×0.125= 0.54÷0.6=
0.61+0.39= 0.56÷28= 10÷20= 4.08÷0.4=
11-9.4= 0.8×0.11= 0.72+12.8= 5.6÷0.01=
2.3×100= 0.75×100= 0.108÷2= 10.8÷9=
0.7÷0.8= 16-5.07= 4.2×0.4= 0.72×6=
12÷0.5= 5.2×0.4= 12.2÷0.2= 5.6÷100=
0.41+3.7= 0.02×0.5= 7.2-0.8= 1.4×0.5=
84÷0.21= 0.75÷0.25= 2.5×16= 0.108÷2=
1.75+32.5= 16-5.07= 5.2÷13= 1.64÷41=
1.02×0.2= 0.26×0.3= 8.4×0.02= 1.29×6=
0.8×0.05= 12.6÷0.03= 8.71÷0.1= 21÷0.21=
0.8×0.13= 0.34÷17= 8.08÷0.4= 0.5×2.2=
1.24÷4= 3.27+0.63= 5.02×0.3= 0.3×0.5=
6.4÷4= 7.2÷1.8= 0.7÷0.35= 0.72÷1.44=
0.48÷0.04= 1.25÷2.5= 5.5+55= 16.8÷8=
0.54+2.2= 3.5-0.05= 2÷0.02= 0.25×40=
1.5×0.6= 0.32÷0.8= 12.25÷0.5= 73.5×0.1=
46.5+52.5= 0.45×102= 1.25×88= 2.64+3.85+1.54=
8×1.25= 5.6÷3.5= 4.2÷0.7÷6= 0.4×8.6×25=
0.27÷0.3= 2.5×101= 0.65×101-0.65= 2.6×7÷2.6×7=

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來源: 題型:

(1)0.28:0.49   (2)0.32:48 (3)0.15:
3
20
  
(4)
3
5
4
15
(3)
1
8
:0.75  
(6)
1
4
2
5

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來源: 題型:解答題

直接寫出得數(shù):

0.96÷2=4.8÷0.3=0.56÷0.07=0.24×0.5=
1.5×0.5=60×0.8=0.42×5=0.06×0.9=
1.6÷2=0.28÷14=1.64÷41=10÷20=
2.8÷4=4.8÷12=5.2÷13=12.5÷5=
0.8×1.1=3.5×0.3=7.2+12.8=46.7-3.8=
3.5÷7=350÷700=2.79÷3=279÷300=
9.6÷0.8=2.4÷0.8=10.8÷9=0.81÷0.27=
4.2÷2=0.63÷9=0.63+1.7=7-0.23=

查看答案和解析>>

同步練習(xí)冊答案