小学五年级数学小数乘除法专项计算练习题.doc

1、小数计算练习题集2.14-0.9=0.5+7.6=240+ 48=4200+ 300=0.75 -0.38=396+99=90X 30=20X35=1 0.2=32.25=1.57+3.43=286+199=18.54-9.9=36X99=2.4+ 2=48+ 0.6=96 + 3=0.24+ 0.2=4.8+ 6=0.96+ 0.03=2.4 +0.2=4.8+ 0.6=9.6+ 0.3=3.24+ 24=3.24 +0.24=3.24+ 2.4=2.4+ 2=48+ 0.6=96 + 3=0.24+ 0.2=4.8+ 6=0.96+ 0.03=2.4 +0.2=4.8+ 0.6=9.6+

2、0.3=25.86=22.8 3=5.98+ 0.23=19.76+ 5.2=3.817=32 42=246.4+ 13=2.17+ 0.7=0.4+ 0.01 =5.3+6.7=5.4-3.6-1.4=30X0.01 =151.5=12.9-8.5=7.2X0.4=2.8X 1.4=8+2-8+2=286+198=314-202=526+301=223-99=0.45 X 2.5 =0.8X 1.25 =0.3X3.6 =0.3X0.3 =10X0.07 =0.3X 1.4 =0.05X7 =0.92X0.4 =0.2 X0.26 =0.14X4=0.02X0.1 =1.2X0.3=0.2

3、X0.4 =8.2+ 1.8 =100-35.22= 2.3X4 =2.5 X0.4 =2.4x 5=0.22X4 =3.25x 0.5=0.9 -0.52 =3.99x 1 =0X 3.52 =12.5x 8=8+10 =10-1.8-7.2=0.43+3.57=2.5X4X 12=0.9 X0.8=7.5x-3x=a+3a+7a=1.05x 100=1 + 0.5=0.96+ 3=1.47+ 0.7=5.4+ 6=0.16.5 X10=0.56X100=3.78X100=4-0.8=3.215 X 100=0.8x 10=4.08X100=1.1X0.2 =0.6 X0.8 =30.9=2

4、.5X0.4=3.6X0.4=12.5 8=50x 0.04=80X0.3 =1.19=0.16 x 5=1.78+ 2.2 =9.6+ 0.6 =1.20.5=0.7 +0.01 =2.5x 0.4=123.9=6.6+ 0.66=3.9 +2.03 =4.2+ 3.5 =1.6+2.4 X0.3=2.14-0.9 =27 + 456 + 73= 0.3X0.3=7.2+ 2.8 =0.9+ 0.01 =12 + 0.3=2.87+ 0.7 =13+ 4 =0.96+ 0.3 =1.5 X0.4 =7 -0.25 =2.5X0.7 X0.8= 8 2.5 =16+1.6 =5.6X 1.01

5、 =0.36+ 0.64=64.32+ 16 =4.2 +0.1 =72.8+ 0.8 =8.4+ 4.2 =13.8+ 9.9 =2.4 X2.5 =0.05X0.8 =2.56-0.37 =12X2.5 =1.23 X 3 =3.2+ 1.6 =3.5+ 3.5X3= 19.6+ 2=8.8 +2.2=0.75X4=0.5X0.8=8.4X0.2=1.6 X0.2 =7.2X0.3=2.8X0.3 =0.9+ 0.15=1.8 X0.4=5.5+ 0.55=0.08X100=2.2+ 0.11 =5.46+4.54=12.5X0.8=0.35X0.3=1.4x 5=2.8 X4=19.6+

6、 4=22.5X4=0.396+ 1.2=0.756 + 0.36=15.6X13=0.18x 15=0.025X 14=3.06 X 36=0.04X0.12 =3.84X2.6=5.76x 3=7.15 X 22=90.75+ 3.3=3.68X0.2=16.9+ 0.13=1.55+3.9=3.7X 0.016=13.76X0.8=5.2X0.6=8.4 X1.3=6.4x 0.5=4.480.4=5.25x 5=35.4 4.2=0.042X 0.54=0.76X0.32=0.25X 0.046=2.52 3.4=1.08X25=4.8x 0.25 =2.5+ 0.7=10.1 +3.

7、3=10.75+ 12.5=3.25X9.04=12.5X8.8=0.43 0.28=6.45X0.73=4.6X0.6=8.9x 0.05=3.08 0.43=1.5X 26.7=5.22+ 29=18.72+ 3.6=13.95 + 3.1=8+10=10-1.8-7.2=0.43+3.57=2.5 X4X12=0.9X0.8=7.5x-3x=a+3a+7a=1.05 x 100=1-0.5=0.963=1.470.7=5.4 +6=1280.4=780.6=9.63.2=65 + 0.05=54+ 0.12=32-0.4=36+ 0.18=42 + 0.003=780.06=450.00

8、5=81+ 0.03=7.2 +0.002=10001.25=10-2.5=120+ 0.024=7.5 5=8.6+ 0.002=0.0036+ 3.6=8.62=2.5 0.005=0.36+ 0.0006= 7.52=6.321=8.6 0.0043=460.0023=8.40.0084=1.28+ 3.2=9.8 0.7=4.60.023=0.009+ 0.005= 39+ 0.0003=133+.0007=5.050.5=123000+ 1.23= 0.00125 +50=5.6 700=7600.008=4.3296=492+ 0.004=18.63 + 0.03=9.5X99=1

9、3.5X0.98=0.1-0.047=0.29 2.9=3.4X0.2=0.5719=63+124+76=7.09 X 10.8=0.8X 7.09=9.5101=3.8X 10.1 =7.69 X 101 =3.8X 10.1 =0.125X72=719+7=22.8 3=5.98+ 0.23=19.765.2=3.817=32 + 42=246.4+ 13=2.17+ 0.7=0.4+ 0.01 =5.3+6.7=5.4-3.6-1.4=30X0.01 =151.5=12.9-8.5=7.2X0.4=2.81.4=8+2-8+2=286+198=314-202=526+301=223-99

10、=0.45 X 2.5 =0.8X 1.25 =0.3X3.6 =0.3X0.3 =10X0.07 =0.3X 1.4 =0.05X7 =0.92X0.4 =0.2X0.26=0.14X4=0.02X0.1 =1.2X0.3=0.2 X0.4 =8.2+ 1.8 =100-35.22=2.3X4 =2.5 X0.4 =2.4X 5=0.22X4 =3.25x 0.5=0.9 0.52 =3.99 X1 =0 X 3.52 =12.5x 8=5.4 -2.5 1.4=2.5X 1.25 X0.32= 12-6.2 -3.8=(180+20) +5=1.7+0.43+3.3=75X25X4=250

11、250+5=70+50+50+70=13.7+0.98+0.02+4.3=18.6-3.47-0.53=72 X 101-72=235x 28- 35X28=2.6 X78+78X 7.4=7.26-(5.26-1.5)= 8X(2.5 +0.25)=1.25 X 0.8 X0.5 =(1.5 +0.25) X4= 0.12X0.5 X0.16 =7.28 99+7.28=4.3 X 50X0.2=5436+ 18 =102X45-328=1001 9036+ 18=3.8 X 5.25+14.5=(25+4) X4=645-45X12=401X19+284=5.37 X 0+4.63=5.0

12、-0.9 +0.9=64-2.64 X0.5=2.7 5.4 3.9=6.58 4.5 0.9=4.8 -4.8 X0.5=56.5 X 99+ 56.5=(1.2+ 1.8) X4.5= 1025 768 + 32=10-2.87-7.13=0.96+9.6乂 9.9=640+12845=2.57.14=7.2899+7.28=3.94+34.30.2=3.69.85-5.46=2.8 X 0.5+1.58=(1.25-0.125) X8= 4.840.5+0.81 X0.18= 4.86.81+6.81 X99=0.25 39+0.25=0.25 X 185X40=1.53+23.4 +7

13、.2=4.85+0.35+1.4=X(15 + 2.4)=0.25185 40=(85.27)1.25=6.8X0.75 +0.5=1.2+3.2+0.8 =1.21.25 X 8+1.25=16.12X 99+16.12=4.350 0.2=8.9 X 1.1 X4.7=8.053.4+7.6=32+4.90.9=100.1=0.873.16+4.64=2.130 8257=2.5(3.80.04)=6.81+6.8199=3.75+0.125 - 2.75=X2.5 X4 =2.7=3.01 + 1.7+0.99 =1 X 0.66 +6 =2.7-2.75.4 +(0.51 +0.17)

14、= 0.78 X 99+0.78=5.4 X (7.26 +6.05)=X0.4 x 2.5 x 8=46 0.33+54 0.33=26X15.7 + 15.7 X 24=85.07-(15.3 -4.8)+5.369=37X25+268+ 67=(7590+ 3314) +54=10.5+(5.2-3.5)=6.25+3.85-2.125+3.875=8.7 X 17.4-8.7 X7.4=12.50.68 + (5.2-3.5) X 1.25=(0.25+2.5+25)X 0.4=5-0.9 X 0.2+1.8 +0.5=6.4X 3.28+4.6 X 3.28-3.28=12.27 +

15、 21 + (7.3 -6.6) X 2.4=4.4 X 0.8 3.4 X 0.8=(9.37+9.37+9.37+9.37)2.5=2.376.3+2.373.7=1.93+2.7+2.07+7.3=(2.275+0.625) X0.28=40 (3.5 -2.75+0.86 )=(32+360+ 45) X 72=412+ (607 36X 14)=(13.8 -8.7 ) +0.034=3.375+5.75+2.25+6.625=2.1 X4.3+5.7 X2.1=3.375X 0.97+0.97 X 6.625=6.54+2.4+3.46+0.6=95.61.8+95.68.2=X4

16、 +3.27 X5.7=(5.375-3.375)=1.5 X4.2 0.75 + 0.25=3.270.25 X 80- 0.45 + 0.9=2.4+2.47.5-5.7 X1 + 3=12.37-3.25-6.75=16X6.8+2.2 x 16+16=58.7-16.653.7=0.4 X4.7 X 2.5+(2.3+5.3)=9.31-1.125-7.875=400X(0.62+0.08)=1.2X(9.6 +2.4) +4.8=(8.58 -3.69 ) X ( 3.4 1.8)1.5 X (10.03 15.6+7.5)=30.6 + (4.5 X0.16)=4.7+3.91(3

17、2-29.7)=3.12 X (0.9 +0.7 +0.1 )=9.2+9.728+ 3.2 X 1.5=2.4 X0.75 + 1.25 +2.5=(20.2 X 0.6-2.12) +0.1 =(1.5 X 0.9+3.65) +2.5=8.48+ 0.8 X0.9=101X0.36 + (14.4 X 0.05 )=(25.3-9.7)+ 0.3 x 8.5=10.5+(5.1 -4.4)+18.25=4.11-0.72 X (3.38 2.13)=10251125+ 4.5 X3.6=(6.8 5.4) X 2.75 0.9=0.875 X 36+4.05 + 8.1 =(227+25

18、4.68) X 0.5=630+ (2.98 +6.5 X0.08)=(21.88+29.8)7.6=(8.1 -5.4) +3.6 +85.7=(3.44+20.5X 0.32) +0.16=0.54 +(8.7 +45.3) X 28.4=0.1+ 1 + 1 + 0.8 0.1 =(1.25 +6.4 ) 14.88 +2.4=(4.3-2.01 +2.2) +4=58.8 + (0.6 X0.7 ) +0.02=10.4 7.79 + (0.35 +0.6 )=3.6 + (1.2+0.5) X 5=13.7X 0.25 3.7 +4=3.6 X1.25+ 0.32 +0.4=0.8X

19、(3.2 2.99 + 2.3)=2.5 X(6 +9.728 + 3.2)=5.2X(4.6 +0.92 X 0.04)=5.4 +(3.94 +0.86) X 0.8=10.56 X 3.75 -3.75 X 0.56=(37.62+20.76 ) +0.042=(6.02 + 2.8 )+0.4 - 2.05=(71.2 -71.2 X0.9) +0.25=(4.25-4.25 X0.8 ) + 1.7=1.52-1.6 X5+5.7=3.83.27-2.5 X4 + 8=(4.8 -4.8 X0.5) +2=0.8X ( 10.4 +0.64) + 0.92=(25.3-9.7) +0

20、.3 X 7.6=(4.5+1.3 X6) +1.5=19.28+1.82 +0.7=(1.5+0.8 1)+0.4=(17.2-4.5 X3.6) +0.32=X (80.5-9.84 +0.16)=1.08+ (3.94+34.3 X0.2 )=1.46 X5+12.8 +0.4 X7.5=十 (24 25X0.6)=(0.25 +0.125 ) + (0.75 X0.4)=2019.8+(3.749-0.299) +2.3=8.6+15.4+ 0.4 x 1.4=X (2.6+12.4)=58.8 + (0.6 X 0.7 ) +0.02=0.4 X (3.2-0.8) +1.2=16.78-1.6 X 1.5 +0.8=(53.73-17.49)18.64-4.35 X 2+20.9=(9 -8.5) X(5 -4.76) +0.1 =(1.1-0.78 ) X ( 2.7-1.95 )=