小数除法计算题道口算道竖式道含问题详解

1、小数除法计算题500道（口算300道+竖式200道）含答案一.口算题（共50小题）1.直接写出下面各题的得数.14.3+5.7=9X99+9=直2+5=0.25 X40=0.01 +0.5=1 3=7.2 -2=3.1 +3.1 =7.5 -4.5=10 2.05=1.8 X0.4 X 0.25=1+0.2=6.5 5.6=0.05 X2=1.32+8 1.32+8=4.8 +0.8=10 + 0.01 =1.36+2.87+3.64=2 .直接写出得数.2.1 +0.7=0.1 +0.01 =3 .直接写得数4 0.2 +2=6.4+3.6=4. 口算.0.9+0.03=0.25 X 4 +

2、0.25 X4=0.75 + 15=0.6 X1.5=7 8=1.26 0.6=0.72 8=10-1.55=3.5 X 0.4=4 + 0.25=5.3 +0.53=0.54 6=4.8 0.06=1.25 X 8=0.74X11 =7.2 40=6.25 -0.87+0.13=0.4 X2.7 X25=2.5 X0.5 X4=5.直接写得数.6.3+0.3=1.8 X 0.5=25.1+4.9=0.9 0.89=1.07+8.3=3.6+10=8.1+9=4.5 X 0.2=11 - 3.9=2.5 X 0.04=1.8 +0.1 =2.4 + 100=90+ 100=6.直接写出得数.6

3、.4 +0.2=100X 1.5=7.直接写得数.5.6 +0.8=9.15 +0.3=8.直接写得数1.4 X 100=90 + 6=6.82 - 5.2=17.2 +0.86=2.80+10=0.025 义 100=1 - 0.5+0.5=12.5 X0.8 X0=0.33 X1000=0.32+1.98=接写得数.10 + 0.01 =0.22+0.8=10- 2.05=4 + 0.25=0+19.8=0.2 X0.05=1.36+3.64=0.4 X 0.25=10 .直接写得数0.25 +0.5=0.32 + 0.04=1.25 X4=1.6 +0.4=0.54 +6=5.6 +7=

4、11 .直接写得数.5.09+10=12.5 X0.8=0.5 0.25=45.6 1=32.1 X0.2=0.25 X 6=0.4 X 0.5=0.54 +0.9=10.2 + 0.01 =12.5 X0.8=12 . 口算4 + 5=1.8 +0.03=75 + 2.5=0.2 X 25.4=3.6+4.4=10- 5.2=3.4 X 0.2=7.8+6=13 .直接写出得数3.6 +0.3=6.3 +7=5.6 X100=0.25 X 4=0.56 +28=36+ 0.9=0.64+0.8=0.72 X 3=1.2 X20=7 5=6.12 + 0.5=2.9 +5+0.2=0.25 +

5、5=0.72 +0.9=3.145 X100=7.2 +3.6=1 50=12.4 +4.1=0.01+0.99=7.6 7.6=1.25 X 4=500 + 2.5=14. 口算3.4 -2=2.7 0.3=0.42 +6=4.12 X2=6.3 -0.9=1.53+2.4=4.8 X0.5=6.4 +80=40X0.41 =30.9 X9=10X4.1 =4.6 +0.5=15.直接写得数.16 .直接写得数0.35 +5=0.3 X2=0.3 +0.2=0.7 X0.9=0 + 7+3=2.4 X5=4.9 X 0=2X0.45 X 5=17 . 口算我最棒.0.64+1.6=1.4 X

6、0.5=0.72+0.9=10.9 -8.9=2.7+7.2=0+1.5=2.7 X 0.3=24 + 0.3=7.6 X 8+2.4 X 8=0.25 X 4.9=187 1000=0X0.008=0X4.65=0.1 +0.05=0.14 +2=4.3+2.7=18 .直接写得数0.8 + 10=237 - 9=6.0805 X 1000=19 .直接写得数.0.63 +9=1+0.25=2.7 +0.920.直接写得数.8.4 + 4=1.1 X0.8=2.9+3.7+2.1 =200X0.07=25+8=257+0=24 5=5.4 + 1.45=4X0.5=0.36 +0.12=3.

7、6 +0.2=0.56+4.44=4 + 0.8=0 + 58=0.001 X 100=3.5 0.7=3.3 0.1=9.6 6=0.72 90=1.25 X5X8=0.4 X 0.25=21.请你直接写出得数1+0.25=6.2 +0.62 - 1 =1.2 X60=5+3.2+ 0.8=4.8 + 0.8=7.5 - 0.45=5.7+3.3=0.75+1.5=0.2+4=0.21X4=22.直接写出得数.0.72 +0.9=23.7+2.63=4.8 +0.4=0.52=6.5 - 5.6=1 0.25=8 0.8=10+ 4=0.4 X 0.8=0.48 0.8=0.35 义 4=0

8、.3- 0.15=23.直接写出得数1.2 +0.4=2 8=4+0.5=0.72 三4=0 + 5.32=3.6+1.8=1 - 0.73=0.24 三0.6=6.4 + 1.6=0.125 X80=0.5 X0.8=13.2 三0.6=24.直接写得数.2.5 +0.5=0.42 +0.6=3.5 + 0.01=0.54 + 0.6=0.8 0.35=0.25 X4=12.5 X0.8=0.2 X 50=0 + 3.68=0.3 X0.2=25.直接写出得数.0.56 +0.7=0.6+0.65=3.9 + 1.3=12 + 0.03=5.2+0.13=26. 口算3.6 + 1.2=99

9、 0.9=99X1.01 =8.1 +9=25 0.05=13.5 -2.8 - 7.2=4.8 +0.6=88 0.008=25X0.32 X125=1.25X8=1 + 2.5=27.直接写得数.6.6 0.6=5 0.5=34 0.2=0.64 +0.32=0.7 X 1.2=7.2 + (0.8 X9)40X0.25=0 + 4.8=2.9 +2.9=0.3 X 0.6=0.07 X50=100X0.07=22.1 X1 =28. 口算0.02 X0.1 =0.8 X 0.125=29. 口算.3.6 + 1.2=12-4.3=36 + 0.01 =2.3+0.8=0.36 + 0.4

10、 +9=4.4+4=4.8+0.4=1+0.25=5.5 0.11=13.8 6.9=30.直接写得数.6.48=9.8 0.14=8.729=0.99 9.9=4.8 16=0.63 9=31.直接写出得数.0.56 8=1.2 X0.1 =2.9 X 10.02 七32.直接写出得数.0.07 X10=51 + 0.3=12.1 +3.9 Q3.6+3=4.8 4=0.04 2=33. 口算1 0.25=7.8 6=3.9+13=0.88 4=0.78 6=9.9 9=3.6+12=1.25 5=3-1.9=4.3+15.37=6 + 0.58 56.7 7=8.127=7.5 0.05=

11、2.4 24=0.8 X 7=8X0.6=70X0.12=0.45 +9=7.2 +9=0X5.8=4X8X0.25=34.直接算出得数.2.1 +2=3.8+1.02=7.50.4=2x 0.7x=10+ 8=0.8 X 0.6=3.2 X 0.5=9.60.06=3.57 +0.7=4.5+0.76=35.直接写出得数.22.4 +4=0.25 X 4=0.21 +7=5.6 + 7=1.2 X 5=42 + 3=6.12 + 0.6=0.54 + 6=38.5 5=24 0.8=36.直接写出得数.1.6 0.4=7.2 8=4.2 0.01=2-3.6 +1.8=4 5=4.6 0.4

12、6=5.4 +1.8=0 21.3=37. 口算1.2 3=0.48 6=4.623=6.8 4=0.72+12=0.72 4=9.6 6=5.213=12.5 5=0.12 +5=38.直接写得数.56 100=0.625 X100=8.07 义 10=7.34 义 0=39. 口算0.42 +0.6=7.8+1.2=1.29 - 0.29=5-2.1 =3.5+0.9=3.31+1.2=5X0.6=10+0.1 =0.56 X 100=359+402=1.2+0.08=25X4 + 25X4=2.4+0.24=0.1 X0.1 =5.35+2.5=18.6 -7=4X (25X14)=0.

13、25+0.2+0.75=1.25 X 2.3 X8=2.5 -2.5 X0.4=40.直接写出得数.10-9.9=0.67+0.3=8.9 X 100=2.5 X4=8+16=0.9 X60=1.04 +2=9.1 +7=1.5 X 8=0.39 + 39=0.25 +8=0.05 X 300=41. 口算.0.9 0.7=10-9.9=8.6 X100=148.3 + 100=2.4+2=48 + 0.6=0.24 + 0.2=4.8+6=2.4 0.2=4.80.6=9.6 +0.3=96+3=12.6 3=12.6 0.6=7 3.5=6.06 6=1.8 6=42 .直接写出得数16

14、+ 5=22 + 4=48+100=35+70=95 + 5=1.3 X4=43 .直接写的数0.75 0.5=1.6 0.4=16.8 0.4=2.8 0.28=0.5 0.25=44 . 口算下面各题.5.74 10=0.4 0.8=0.56 0.7=45 .计算.12.8 4=97.8 6=83.5 5=4.2 0.07=1.2 X 5=0.6+0.65=31.5 +5=11.7 3=95.2 4=0.16 X 4=0.64 + 2=3.9 +1.3=39.6 4=29.4 2=67.8 2=46 . 口算:0.96 8=0.08 0.01=0.2 +0.05= 0.36 + 0.18=

15、5.1 +1.7=0.54 0.6= 4.8 0.24=10- 0.92=0.9 +45=2.5 X 4+2.5 X4=47 .直接写出得数.2.5X4=10+0.1 =2.8 0.4=4.5 0.15=7.2 0.9=1.5X6=15+0.5=5 + 2=1.2+0.03=1.3X3=48 .直接写出得数.0.3+5.7=5.3+50.7=1 - 0.6=0.4 0.35=3.3+5.6=1 0.04=0.25+5.75=8+50.28=49.直接写出得数.0.72 +0.9=0.78 +6=4.5 +0.15=5 1000=320 100=4.8 0.4=1+0.25=0.42 0.7=4

16、23 - （ 100+23）=0.56 X 100+ 1000=3.6 + 1.2=4.4 + 4=7.1 X0.4=50.直接写得数0.29 +100=170X 100=2.6+13=7.2 0.4=1 - 0.07=19+0+19=90- 26- 13=0.26 X 1000=24 X 99+24=38-25+12- 25=500+100X 1000=二.竖式计算（共50小题）1.竖式计算.0.51 +0.5=98+5.6=20.4+ 1.7=验算:2.用竖式计算（需验算，除不尽的保留两位小数）1.092 +0.42=3 .列竖式计算.69.02 +3.44 .列竖式计算.2.05 +25

17、4.2+0.285 .用竖式计算. 210+ 1.4=8.9 +0.56 Q26.8 X0.3546.8+3.4 （保留一位小数）0.13+0.17 （商精确到百分位）4.2+1.32 （得数保留三位小数）117.3 +0.46246.竖式计算2.1 +0.7=7X0.3740.32+1.68 .+ 0.35=7.2+4=7.用竖式计算并验算.2.76 X 24=12.6 +0.28=8.用竖式计算.220.5 +15=（用乘法当算）2.64 X 1.09=（得数保留两位小数）6.3 +0.125=0.84 义 1.65=9.列竖式计算.（后两题得数保留两位小数）33.6 +568.96 +

18、0.287.12 +0.224.13 + 14.10竖式计算12.4 +4=45.9 +0.6=51 + 0.3=52.8+12=75.6 +0.18=9.6 +0.32=11用竖式计算13 + 2.554.5 +0.160.68 +0.95 （保留两位小数）2.05 X 0.16 （验算）78.6 + 11=（商用循环小数表示）6.21 +0.03 .12竖式计算，带*的要验算1.25 +0.25=78.6+11=（商用循环小数示）5.63+7.8Q数保留两位小数）28.28 +0.4=*0.303 +5=13 .列竖式计算（带的保留两位小数） 1.57 + 3.9 0.58 X0.2470

19、.733（商用循环小数表示）14 .竖式计算（得数保留1位小数）带的验算 64.8+ 1.8 Q 8 6.69 Q0.65 X 3.84 七15竖式计算* 的要验算）9.4 + 11 =*144+12=14.2+11 =16竖式计算75.6 +0.1825.6 +0.0322.78 X 1.85.63+6.1 （得数保留两位小数）10+3.3 （用循环小数表示）17竖式计算，按要求保留商的近似值30+7 （保留两位小数）60.9+3.2 （保留一位小数）25+ 9.9 （保留整数） 18用竖式计算(1) 6.21 +0.03=(2) 10.8 +45=(3) 8.54 +0.7=(4) 72.

20、9 + 0.9= 19.竖式计算.（第、题验算） 15- 74 6.72+4.2= 50.96+6.5 9.25+ 3.7=20用竖式计算（1） 1.25 + 0.25=（2） 8.4 +0.56=（3） 8.54 + 0.7=（验算）（4） 78.6 + 11=（商用循环小数表示 ）21用竖式计算4.5 X0.18=2.346+ 2.3=验算：70.3 X3.6=5.06 +2.2=22用竖式计算（带*得数保留两位小数）4.6 X 0.2529.9+ 0.46*4.65 +1.3.23列竖式计算（除不尽的保留两位小数） 24.6+ 0.16; 13.9+ 6;0.325+ 1.5; 6.24

21、+ 0.8; 18.3+4; 19.2+6.24用竖式计算，并指出哪些是循环小数7.05 +0.941.71 +3.85.7+92.16 183.7 +2.2 .4.83 +0.738.2 +2.71.8 +0.2525用竖式计算（1） 3.9+0.26弋（2） 9.35+ 3.4勺（得数保留一位小数）（3） 0.17 + 0.11勺（商用循环小数表示）（4） 0.168+ 0.7Q（5） 4.05+18勺（得数保留两位小数）（6） 4.68 + 5.4=（商用循环小数表示）26用竖式计算21.45+15;49.04+8;217.6+34;11.7+36;1.69+26;54.81+27.27

22、将下列式子的得数保留两位小数 25.32+0.15 1.03+ 1.2 1.07+ 9.25.02 X4.8= 1.35 X320=26+ 0.13=48+2.3勺（得数保留两位小28列竖式计算47.04 +5.6=52.92 +0.27=29列竖式计算：0.195 +0.136 + 2.430竖式计算(1) 0.38 X 0.23(5) 52.95+753.28 X 2.7=8+1.28=3.6+0.87.085(2) 5.79X3.6(6) 3.01 +7（8） 84.01+31 （用乘法验算）31计算下面各题，并用乘法验算0.764 X 1.2 弋15.36 + 12=76.76 + 0

23、.659.72(3) 4.6 X0.25(7) 4.95 11(9) 0.646 + 190.760.27 (4) 6 + 24(10) 4.7 X0.59(1) 15.6 + 12(2) 328+16(3) 1.35 +27(4) 0.646 +19.（第三小题得数保留两位小数，第五小题请写出验算过程.32用竖式计算下列各题（除不尽的保留两位小数，后面两道题要验算）45.15 +1.5=52.65+1.3=15.75+2.1 =8.42+0.6=0.436+0.2=9.25 +3.7=33列竖式计算6.6 +443.5+2937.5 +628.6 +1134竖式计算0.448 +32=14.

24、3+6.7=35用竖式计算1.26+1.8=18.9 +2720.4 +243.8 X 0.26=64X 5.04=1.35 + 153.64 +52.11.32 - 8.95=43.5 +0.29=验算5.63+6.1 （得数保留两位小数）27.8 +2.5=验算9.8 X 0.75=36笔算数）37.用竖式计算，加号的要验算. 0.756+0.18=0.35 X 0.48=38.用竖式计算（有的要验算）96.6 +427.79+957 + 0.350.14+0.0839用竖式计算 6.02 - 5.94=6.3 +0.4242+8.2.5 X 1.04=7.8 +75=2.55 +2.5=

25、 40列竖式计算3.5 X 10.880.93+26.7 （精确十分位）1.42 + 1.1 （商用循环小数表示）41计算下面各题，除不尽的用循环小数表示商13-1130.1 +3319- 125.6 +0.07 .43.8 +120.12 +0.257+ 0.3511.62+942竖式计算30.6 + 454.06 + 0.58X 54.6 + 0.91 .43列竖式计算0.58 X0.08=（结果保留两位小数）0.54 +0.018= 13.6 +3=（商用循环小数表示）44列竖式计算，并验算前两个，第三个保留两位小数95.2 +28= 46.8 +0.13=5.63 +7.8=45竖式0

26、.73 X2.157.38 + 1.65.95 +27.6 （得数保留两位小数）46用竖式计算3.38 + 1830.9 X2.75.9527.6（得数保留两位小数）47.列竖式计算.4.83 +23=3.09+1.5=0.14 + 0.08=（验算）48.竖式计算.70 + 5.6=227.8+0.34=7.525 + 0.38=49.用竖式计算下面各题，除不尽的保留两位小数8.65 +0.251.8+127.250.用竖式计算.7.02 X 1.329.83+ 9.50.54 +3.6小数除法计算题（口算300道+竖式200道）答案. 口算题（共50小题）1 .【解答】解:4.8 +0.8

27、=67.5 -4.5=30.753.515=0.050.4=1.410 + 0.01=100010-2.05=7.950.6 X1.5=0.94 + 0.25=161.36+2.87+3.64=7.1.8 X 0.4870.25=0.18解:2.1 +0.7=32+5=0.41+0.2=57 + 8=0.8755.30.53=100.10.256.51.260.540.01=1040=105.6=0.90.6=2.16=0.093.【解答】解30.20.010.72 +8=0.09 4.82=15.10.5=0.020.06=806.4+3.6=101 + 3=0. 3101.25 X8=10

28、解:0.9+0.03=301.55=8.457.2 2=5.20.05 X 2=0.10.7411=8.140.26 X4 + 0.25 X4=16 3.1 +3.1=11.32+87.2 +40=0.186.250.4 X2.71.32+8=160.87+0.13=5.5125=275.【解答】解：6.3+0.3=211.8 X 0.5=0.925.1+4.9=302.5 X0.5 X4=56 .【解答】解:6.4+0.2=320.91.07+8.3=9.3.60.89=0.013710=0.361008.1+9=17.14.511 3.9=7.11.5=1500.2=0.9解:5.6 +0

29、.8=76.822.51 0.5+0.5=19.150.3=30.5解:1.4100=14090 + 6=1514.3+5.7=20解:100.01=10000+19.8=05.2=1.620.04=0.117.20.86=202.80+10=0.280.025100=2.59X99+9=9000.22+0.8=1.00.21.8 +0.1=182.4100=0.02490+100=0.9102.05=7.951.36+3.64=512.5 X 0.8 X0=00.331000=3300.32+1.98=2.34 + 0.25=160.40.05=0.010.25=0.130.5=2.480=

30、0.0810.【解答】解:0.25 +0.5=0.50.32 +0.04=81.25 X 4=51.6 +0.4=40.54 +6=0.095.6 +7=0.811 【解答】解:5.0912.50.5 0.25=245.6 +1=45.610=0.5090.8=100.25 X 6=1.50.40.5410.232.1 X0.2=6.4212.5 X 0.8=100.5=0.20.9=0.60.01=102012【解答】解:4 5=0.81.875 2.5=300.20.03=6025.4=5.083.6+4.4=10-5.2=4.83.47.8 6=1.30.2=0.6813.【解答】解:3

31、.6 0.3=126.35.6 X 100=5600.25 X4=10.5628=0.021.2 X 20=2414.【解答】解:3.4 +2=1.76.3 0.9=77=0.9360.9=407 + 5=1.42.7 +0.3=91.53+2.4=3.90.64+0.8=1.440.72 X 3=2.166.122.90.5=12.240.2=2.90.424.126=0.072=8.244.86.440X30.9 X 10X 4.1=414.60.41=16.415 .【解答】引0.25+5=0.0516 .4 +4.1=317 .【解答】引0.35+5=0.070 + 7+3=018 .

32、【解答】引0.641.6=0.42.7+7.2=9.94.3+2.7=719 .【解答】引0.8 + 10=0.8237- 9=2266.08051000=6080.519.【解答】引0.639=0.079=278.10.5=9.21+0.25=40.720.9=0.80.01+0.99=13.145100=314.57.6 7.6=17.21 50=0.023.6=21.25 X4=5 50 0 -2.5=500.30.30.7 X 0.9=0.632=0.60.2=1.52.44.9 X0=00.45 X5=1.25=4.51.40.72 + 0.9=0.810.90.5=0.70+1.5

33、=02008.9=20.07=142.7 X 0.3=0.8124 0.3=800.254 + 0.8=54.9=1.22525+8=33187+ 0 + 58=0257+0=257 0X 0.008=00.001 义100=0.1X 24X5=1205.4 - 1.450X4.65=03.5 +0.7=53.724X 0.5=20.1 +0.05=2 3.30.1=332.7 +0.9=30.36 + 0.12=30.149.6 +6=1.62=0.0720 【解答】解:8.4 +4=2.13.6 +0.2=180.7290=0.0081.1 X 0.8=0.880.56+4.44=51.2

34、5 X 5X8=502.9+3.7+2.1=87.6 X 8+2.40.4 X 0.25=0.1.78=8021 .【解答】解:4.8 0.8=67.55.7+3.3=91+0.25=46.20.62 0.45=7.051=90.750.2 +4=0.050.211.25+3.20.8=91.5=0.54=0.8460=7222.【解答】解:0.7223.7+2.63=26.4.80.50.9=0.8330.4=122=0.256.51+0.25=48 + 0.8=1010+4=2.55.6=0.90.40.48 0.8=0.60.350.30.8=0.324=1.40.15=223 【解答】

35、解:1.22 8=0.254 0.5=80.720.4=34=0.180 5.32=03.6+1.8=5.40.246.40.1250.73=0.270.6=0.40.513.21.6=480=1024.【解答】解：0.8=0.40.6=222.50.423.50.540.81+0.25=40.5=50.6=0.70.01=3500.6=0.90.35=0.450.25 X4=112.50.2 X 50=100 + 3.68=00.30.8=100.2=0.0625 【解答】解:0.560.6+0.65=1.253.9 +1.3=312+0.03=4000.7=0.85.29913.52.82

36、5 义0.32 X0.13=401.01=99.997.2=3.5125=100026 【解答】解:3.6 + 1.2=38.19=0.94.8 0.6=81.258=109925880.9=1100.05=5000.008=110002.5=0.427 【解答】解:0.640.77.2 + (0.8 X9)=1 400 + 4.8=00.32=21.2=0.840.25=102.9 +2.9=10.30.07 X 50=3.510022.10.6=0.180.07=71=22.128 【解答】解：0.02 X0.1=0.00212-4.3=7.736 + 0.01=36000.8 X 0.1

37、25=0.12.3+0.8=3.10.36 +0.4 +9=0.129.【解答】解：3.6+1.2=34.4 +4=1.14.8+0.4=1230 【解答】解:6.4 +8=0.89.84.8+16=0.3 0.639=0.070.14=708.70.995.513.8 +6.9=229=0.39.9=0.10.11=50解:0.56 8=0.070.073- 1.9=1.110=0.71.2 X 0.1=0.1251 + 0.3=1704.3+15.37=19.672.9 X 10.02 12.1 +3.9 Q6+ 0.58 弋103032.【解答】解:3.6 3=1.27.8 6=1.39

38、.9 9=1.156.7 7=8.14.8 4=1.23.9+13=0.33.6+12=0.38.127=0.30.040.881.257.52=0.024=0.225=0.250.05=15033 【解答】解:1 0.25=40.782.4 24=0.16=0.136.65 + 0.5=1034+0.2=1700.6=110.8 X 7=5.68X0.6=4.8700.12=8.434 【解答】解:2.1 +2=1.053.8+1.02=4.7.5 X 0.4=32x10+8=1.25820.7x=1.3x0.83.29.63.574.5+0.76=5.0.6=0.480.5=1.60.06

39、=1600.7=5.12636 【解答】解:22.40.25 X4=10.215.6 +7=0.81.2 X5=64=5.67=0.0342 + 3=146.120.5438.5240.6=10.26=0.095=7.70.8=3036 【解答】解:1.67.2 +8=0.94.23.60.4=40.01=4201.8=04 + 5=0.84.65.4 +1.8=30 + 21.3=00.46=1037 【解答】解:1.2+3=0.40.484.66.8 +4=1.70.720.724=0.186=0.0823=0.212=0.069.6 6=1.65.212.50.1213=0.45=2.5

40、5=0.02438.【解答】解:56+100=0.561.290.56 X100=565.35+2.5=7.850.6250.29=15- 2.1=2.9359+402=76118.6 7=11.6100=62.58.07 X 10=80.73.5+0.9=4.41.2+0.08=1.284X (25X 14) =14007.34 X 0=03.31+1.2=4.25X4 + 25X4=160.25+0.2+0.75=1.25139.【解答】解:0.425 X 0.6=32.41.25 X2.3 X8=230.6=0.70.24=107.8+1.2=9100.12.52.5 X0.1=1000

41、.1=0.010.4=1.540.【解答】解:10-9.9=0.10.67+0.3=0.98.9 X 100=8902.5 X4=102578+16=0.51.5 X8=120.459=0.0541 【解答】解：2.4+2=1.2 482.40.9 X 60=540.3939=0.01+ 7.2+9=0.81.04 + 2=0.520.258=0.031250X 5.8=00.249.1 +7=1.30.05 X300=154 X 8 X0.25=8+ 4.8-0.6=800.2=1.26=0.8+ 4.8+ 9.6 +0.3=3296 + 3=32+ 12.6+3=4.2 6.066=1.0

42、11.8 6=0.30.2=120.6=842 .【解答】解：16 + 5=3.2 22+4=5.53595 5=1943 .【解答】解：48100=0.481.3 X 4=5.212.60.6=21解:0.750.5=1.516.80.4=4244 【解答】5.7410=0.5740.4 0.8=0.50.56 0.7=0.81.6 0.4=42.80.28=104.20.07=601.2 义 5=60.6+0.65=1.7+3.5=20.5+0.25=20.16 X4=0.640.642=0.323.9 +1.3=345.【解答】 解：(1) 12.8+4=3.2 (2) 31.5+5=6

43、.3 (3) 39.6 + 4=9.9(4) 97.8 + 6=16.3 (5) 11.7 + 3=3.9 (6)29.4 +2=14.7(7) 83.5+5=16.7(8) 95.2+4=23.8 (9) 67.8+2=33.946.【解答】解：口算：(1) 0.96 +(2) 0.08 +(3) 0.2 +(4) 0.36 +(5) 5.1 +1.7=38=0.120.01=80.05=40.18=2(6) 0.54 +(7) 4.8 -( 8 ) 100.6=0.90.24=200.92=0.0847 .【解答】解：2.5 X 10+ 2.8+ 4.5(9) 0.9 +(10) 2.5

44、X 4 +45=0.022.5 X4=16+ 7.2+4=100.1=1000.4=70.15=300.9=81.5 X 6=9 15+0.5=305 + 2=2.51.2+ 1.3 X48.【解答】0.3+5.7=65.3+50.7=560.90.7=0.249.【解答】3.6 + 1.2=34.4 +4=1.17.1义0.4=2.84解:1 - 0.6=0.40.40.35=0.0510-9.9=0.1解:0.720.9=0.80.786=0.134.50.15=300.03=403.3+5.6=8.91-0.04=0.968.6X100=8602.6+13=0.27.2 +0.4=181

45、-0.07=0.933=3.90.25+5.75=68+50.28=58.28148.3100=1.4834.8 +0.4=121 + 0.25=40.420.7=0.650.【解答】解:0.295+1000=0.00519+0+ 19=19423 - (100+23) =300100=0.00290.56 X 100+1000=0.056500+100 X 1000=5000170X 100=17000 320+100=3.290-26- 13=510.26 X 1000=260 24 X 99+24=2400 38 - 25+12 -25=0二.竖式计算题（共50小题）1 .【解答】解：0.51 -0.5=1.0298 + 5.6=1520.4+1.