五年級小數(shù)豎式計算

68.8÷4＝85.44÷16＝67.5÷15＝289.9÷18＝101.7÷9＝243.2÷64＝16.8÷28＝15.6÷24＝0.138÷15＝1.35÷27＝0.416÷32＝3.64÷52＝91.2÷3.8＝0.756÷0.18＝51.3÷0.27＝26÷0.13＝210÷1.4＝2.688÷0.56＝10.625÷25＝126÷45＝10÷25＝2.7÷7.5＝15÷0.06＝25.6÷0.032＝14.36÷2.7≈8.33÷6.2≈1.7÷0.03≈32÷42≈1.25÷1.2≈2.41÷0.7≈4.5×0.07=6.3÷0.09=2.5×3.6=19.8÷3.3=5÷0.25=0.76÷0.4=2.36×0.22=2.8×4.58=3.57÷4.2=82.8÷36=45×2.46=3.6÷0.24=382.5÷45=6.4×5.48=13.42×4.73=9.65×8.12=7.23×1.2=6.3×12=2.14×8.3=4.9×1.12=21.98×2.31=0.24×28.37=29.13×3.14=9.88×11.21=5.5÷11=7.5÷0.5=6÷1.2=3.2÷8=7.2÷0.9=24÷1.2=12÷0.12=6.75÷0.25=12÷0.75=21÷0.7=16.9÷0.13=1.55÷3.9=3.7×0.016=5.63÷6.1=0.3÷0.15=0.5×0.12=0.6×3÷0.6×3=1.4×5=0.1×0.01=0.35×8=7.35÷7=1÷0.01=4.692÷2.3=

5.5×2.02=

3.14×0.68=3.07×1.5=5.26÷1.6

=0.85×6.3

=

52.6×0.252=

35÷73

=

4、判斷。

（1）如果兩個因數(shù)的積不是小數(shù)，那么這兩個因數(shù)一定不是小數(shù)。（

）

（2）一個不等于0的數(shù)的1.02倍一定比原數(shù)大。

（

）

（3）因為12×35=420，所以1.2×3.5=42.（

）

（4）在表示近似數(shù)時，5.0也可以寫成5。（

）

（5）整數(shù)乘法的交換律、結(jié)合律和分配律，對于小數(shù)乘法同樣適用。（

）（6）0.25×9.9=0.25×（10-1）=0.25×10-0.25。（

）

（7）4.10與4.1大小相等，表示意義也相同。（

）

（8）3.994精確到百分位約是4.00.（

）

（9）一個數(shù)（0除外）除以小數(shù)，商一定比這個數(shù)大。（

）

（10）兩個數(shù)相除的商是0.9，被除數(shù)不變，除數(shù)擴大10倍，商是9.（

）

5、把下列各式中的乘積點上小數(shù)點，使等式成立。

9.36×2.7=25272

0.89×6.43=57227

52.1×1.98=103158

26.15×3.4=88914.5×0.07=6.3÷0.09=2.5×3.6=19.8÷3.3=5÷0.25=0.76÷0.4=2.36×0.22=2.8×4.58=3.57÷4.2=82.8÷36=45×2.46=3.6÷0.24=382.5÷45=6.4×5.48=13.42×4.73=9.65×8.12=\7.23×1.2=6.3×12=2.14×8.3=4.9×1.12=21.98×2.31=0.24×28.37=29.13×3.14=9.88×11.21=920÷40=780÷60=960÷40=79×97=28×32＝54×25＝48×61＝23×37=46×58=326×52=45×12＝33×12=32×69=0.828÷3697.2÷247.65÷0.8512.6÷0.288.61÷2.158.75÷0.25220.3÷0.758.8÷0.2858.9÷317.67÷5.983.2÷3.297.2÷5.48.4÷2418÷4823÷1847.65÷250.98÷352.525÷2584÷56140.7÷382.8÷721.56÷2.4=1.44÷0.015=2.898÷0.18=85.44÷1642.84÷7101.7÷967.5÷15230.4÷621.24÷360.736÷2343.5÷1235.21÷739.6÷246.21÷0.0385.44÷16

42.84÷7

101.7÷9

67.5÷15

230.4÷6

21.24÷36

0.736÷23

43.5÷12

35.21÷7

39.6÷24

6.21÷0.03

210÷1.4

51.3÷0.27

91.2÷3.8

0.756÷0.180.66÷0.3

11.97÷1.5

69.6÷2.9

38.4÷0.8

15÷0.060.828÷3697.2÷247.65÷0.8512.6÷0.288.61÷2.158.75÷0.25220.3÷0.758.8÷0.2858.9÷317.67÷5.983.2÷3.297.2÷5.48.4÷2418÷4823÷1847.65÷250.98÷352.525÷2584÷56140.7÷382.8÷721.56÷2.4=1.44÷0.015=2.898÷0.18=85.44÷1642.84÷7101.7÷967.5÷15230.4÷621.24÷360.736÷2343.5÷1235.21÷739.6÷246.21÷0.0385.44÷1642.84÷7101.7÷967.5÷15230.4÷621.24÷360.736÷2343.5÷1235.21÷739.6÷246.21÷0.03210÷1.451.3÷0.2791.2÷3.80.756÷0.180.66÷0.311.97÷1.569.6÷2.938.4÷0.815÷0.061.44÷0.015=2.898÷0.18=1.44÷0.015=2.898÷0.18=0.328÷8=3.51÷3=7.21÷7=23÷25=3.64÷14=37.8÷28=600÷50=42×0.16=84×0.25=0.36×0.9=2.4÷3=20×0.5=0.8×6=1000×0.09=1.35÷27=58×0.32=1.08×52=8.5×0.54=5.62×2.4=0.28×0.16=1.06×0.82=0.06×0.75=0.41×2.01=0.63×0.12=3.5×2.011.26÷0.84=1.45×6.5+0.55×6.56.12×99+6.125.9×101-5.98÷（）=0.825.8÷（）=0.258452÷()=45.270÷()=0.7800.9÷()=80.09360÷()=0.366.54×1.04=0.522÷0.18=33÷7.5=10÷0.8=0.6÷0.015=0.532÷0.4=0.05÷0.025=0.21÷0.012=3.6÷4.8=8.01÷0.9=0.51÷0.85=6.3÷0.42=25.2÷63=0.456÷1.5=16.43+3.6=21.5-20.83=5.7+4.33=20.1-6.9=0.65+19.5=0.29×3.18（保兩）4.48÷2.8+1.535.4-9.6÷（2.65-1.05）6.3×【（0.9+1.8）÷4.5】以下簡便運算12.5×32×0.2529.4+1.72+3.565.17-1.8-3.213.75-（3.75-6.48）3.45+7.7+16.55+1.321.63-（8.5+9.63）36.59-（6.59+7.3）7.23+6.84-0.84+2.770.312×12=42×0.16=84×0.25=58×0.32=1.08×52=54×0.47=420×3.5=9.3÷100×1000=2871÷0.33=50-16.66=6×0.73=3.82×0.45=3.1×4.05=0.522÷0.18=7.54÷0.26=91.2÷0.024=1、用豎式計算0.396÷1.2=

0.756÷0.36=

7.15×22=

90.75÷3.3=

3.68×0.25=16.9÷0.13

=

1.55÷3.9=

3.7×0.016=13.76×0.8=

5.2×0.6

8.4×1.3=13.95÷3.1=6.4×2.5=

4.48×4.4=

5.25×15

=

4.6×0.6=35.4×4.2=

0.042×0.54

=

0.76×0.320.25×0.046=

0.45×0.73=

0.43×0.28=

2.52×3.4=

1.08×25=

0.12×0.5×0.16＝

（保留兩位小數(shù)）

3.25×9.04=

（用除法驗算）

4.8×0.25＝

0.125×1.4≈

10.75÷12.5=

（用乘法驗算）

2.5÷0.7=

（保留三位小數(shù)）

10.1÷3.3=

（商用循環(huán)小數(shù)表示）8.9×0.05=

3.08×0.43=

1.5×26.7=5.22÷29=

18.72÷3.6=

2.5×7.1×4=

16.12×99＋16.12=

5.2×0.9＋0.9=

7.28×99+7.28=4.3×50×0.2=

64－2.64×0.5=2

6×15.7＋15.7×24=

(2.275＋0.625)×0.28=

3.94+34.3×0.2=

1.2×(9.6÷2.4)÷4.8=

8.9×1.1×4.7=

2.7×5.4×3.9=

3.6×9.85-5.6

=

8.05×3.4+7.6

=

6.58×4.5×0.9=

2.8×0.5+1.58=

4.85+0.35÷1.4=

8.7×17.4-8.7×7.4=

(1.25－0.125)×8=32＋4.9－0.9=

4.8－4.8×0.5

=

4.8×100.1

=

56.5×99＋56.5

=

7.09×10.8－0.8×7.09=12.5×0.4×2.5×8

=

0.87×3.16+4.64

=

2．13.×0.×8257=

9.5×101=

0.68÷（5.2-3.5）×1.25=

40.5÷0.81×0.18=

4.8×（15÷2.4）=

6.81+6.81×99=

0.25×185×40=

4.4×0.8－3.4×0.8=

(9.37+9．37+9．37+9．37)×2．5=

4．2.×1.＋1.×1.75=2.37×6.3+2.37×3.7=

2.5×1.25×0.32=

3.8×10.1=2.5×(3.8×0.04=)

7.69×101

=

3.8×10.1=0.25×39+0.25=

0.125×72

=

14.7÷0.07=

46×0.33+54×0.33=

6.81+6.81×99

=

0.25×185×40=

(8×5.27)×1.25

=

6.8×0.75÷0.5

=1.53+23.4÷7.2=

3.75÷0.125–2.75=

13.5×0.98=

12.5×8.8=9.5×99=

1.2×1.4＝0.37×8.4＝3.14×2.8＝0.15×2.34＝

0.85×1.12＝0.86×5.4＝40÷14＝45.5÷38＝

26.37÷31＝1560÷35＝4.8÷2.3＝1.55÷3.9＝

7.2÷2.1＝3.87÷7＝146.4÷13＝0.382×0.13＝

5.63÷6.1＝2.84×0.03＝26.37÷31＝32÷42＝

2.84×0.03＝4.8÷23＝0.382×0.13＝4.2÷4.5＝

2.52×3.4=

1.08×55=

0.12×0.44=0.24×2.15=

0.25×0.046=

6.03×0.25=

2.93－1.837=

3.568÷16=

26.55÷59=

117÷18=

9.48＋1.36=

36.9÷18=

四、單位換算（12%）

0.24米=（

）厘米

0.09噸=（

）千克

8.54平方分米=（

）平方厘米

3.64千米=（

）米

140平方厘米=（

）平方分米

785米=（

）千米

23分米=（

）米

60克=（

）千克

2.06千克=（

）克

3元4角=（

）元

15厘米＝（）米

7噸60千克=（

）噸五、脫式計算（能簡算的要用簡便方法計算）（24%）

15.89＋(6.75－5.89)

5.17－1.8－3.2

13.75－(6.48＋3.75)

3.68＋7.56－2.68

7.85-（2.34－0.15）

35.6－1.8－15.6－7.2

13.35－4.68＋2.65-5.32

73.8－1.64－13.8－5.365.4÷0.15=2、脫式計算（能簡算的要簡算）。

0.125×0.25×8×4

7.4×0.28+0.28×2.623.4÷5.85=

4.8×0.9+0.48

（4－0.4）×2.50.544÷0.025=

2、脫式計算（能簡算的要簡算）

0.125×32

0.78×101

3.26×5.7－32.6×0.07

0.25×0.06

0.125×0.4

0.64×0.75

14.5×0.28

10.32÷2

12.8÷4

37.8÷9

10.32÷2.4

3.25÷2.55.46÷1.3

0.465÷0.15

0.784÷0.56

65÷52

11.2÷0.05

9÷0.18

1.8÷20

7÷0.56

7.3÷0.25

0.798÷0.38

9.8÷1.4

2.52÷2.4

60÷4.8

72.8÷0.8

0.315÷1.5

31÷25

13÷20

0.092÷23

72.8÷8

0.315÷0.15

96÷64

176÷25

11.4÷0.24

2.08÷26

36÷48

96÷0.64

7.56÷4.2

1.2×1.4＝

0.37×8.4＝

3.14×2.8＝0.85×1.120.86×5.4＝

0.15×2.34＝40÷14＝

26.37÷3145.5÷38＝1560÷35＝

4.8÷2.3＝

1.55÷3.9＝

7.2÷2.1＝

3.87÷7＝

146.4÷13＝5.63÷6.12.84×0.03＝

0.38×0.13＝26.37÷31＝

32÷422.84×0.03＝4.8÷23＝

0.382×0.13＝

4.2÷4.5＝

1.64＋2.35=

8.65－6.31=

28.448÷14=

10.88÷34=0.58×250=

12.5＋3.6=

10－7.64=

1.86×7=

13.88－6.29=

926×0.15=

8÷500=

100.2－2.28

26.3＋7.93=

23×7.06=

44÷9（精確到