小数除法计算题500道(口算300道竖式200道)含答案

1、GB8878185555334563BT9125XW创作编号上创作者：凤呜大王*第3页（共37页）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.4.84-0.8=7.5 - 4.5=0.754-15=3.5 X 0.4=104-0.01=10 - 2.05=0.6X1.5=44-0.25=1.36+2.87+3.64=1.8X0.4X0.25=2 .直接写出得数.21 0.7=24-5=14-0.2=7 + 8=5.3 + 0.53=0.1-?0.01=0.25X40=6.5 - 5.6=1.26 0.544-6=3 .直接写得数

2、30.24-2=0.014-0.5=0.724-8=4.84-0.06=64+3.6=14-3=10 - 1.55=1.25X8=4 . 口算.09 + 003=7.2 - 2=0.05X2=0.74X11=0.25X44-0.25X4=3.14-3.1=1.32+8 - 1.32+8=7.2 + 40=6.25 - 0.87-0.13=0.4X2.7X25=5 .直接写得数.63 + 0.3=1.8 X 0.5=25.1+4.9=2.5 X 0.5X4=6 .直接写出得数.0.91.07+8.3=3.66.44-0.2=0.89=10=100X1.5=8.1+9=113.9=作编号：GB88

3、78185555334563BT9125XW作者：凤呜大王*4.5 X 0.2=7 .直接写得数.5.64-0.8=9.154-0.3=8 .直接写得数1.4X100=904-6=14.3+5.7=6.82 - 5.2=17.24-0.86=2.804-10=0.025X100=9X 99+9=2.5X0.04=1.84-0.1=2.44-100=90100=1 - 0.5+0.5=12.5X0.8X0=0.33X1000=0.32+1.98=9.直接写得数.104-0.01=0.220.8=10 - 2.05=44-0.25=04-19.8=0.2X0.05=10.直接写得数0.254-0.

4、5=0.324-0.04=1.64-0.4=0.54 + 6=11.直接写得数.1.36+3.64=1.25X4=5.64-7=0.4X0.25=5.094-10=12.5X0.8=0.54-0.25=45.64-1=32.1X0.2=0.25X6=12. 口算0.4 X 0.5=0.544-0.9=10.24-0.01=12.5X0.8=44-5=1.84-0.03=75 2.5=0.2X25.4=36+4.4=10 - 5.2=3.4X0.2=7.84-6=13.直接写出得数3.64-0.3=5.6X100=0.25X4=作编号：GB8878185555334563BT9125XW作者：凤

5、鸣大王十0.564-28=364-0.9=1.2X20=74-5=14. 口算3.44-2=2703=634-0.9=1.53+2.4=40X0.41=30.9X9=6.34-7=15.直接写得数.0.64+0.8=0.72X3=0.254-5=0.724-0.9=12.44-4.1=0.01+0.99=16.直接写得数0354-5=0.3X2=04-74-3=2.4X5=6.124-0.5=2.94-54-0.2=17. 口算我最棒.0.644-1.6=27+7.2=43+2.7=1.4 X 0.5=04-1.5=200X0.07=0.42 + 6=4.8 X 0.5=10X4.1=4.12

6、X2=6.4 + 80=4.64-0.5=3.145X100=7.64-7.6=0.34-0.2=4.9X0=0.724-0.9=2.7X03=0.25X4.9=7.24-3.6=1 + 50=1.25X4=50 - 04-2.5=10.9 - 8.9=24 0.3=0.7 X 0.9=2X0.45X5=作编号：GB8878185555334563BT9125XW第5页（共37页）作者：凤呜大王*44-0.8=0.84-10=25+8=237 - 9=257+0=6.0805 X 1000=24X5=18.直接写得数19 .直接写得数.0.634-9=14-0.25=2.74-0.920 .直

7、接写得数.8.44-4=1.1XO.8=2.9+3.7+2.1=5.41.45=4X0.5=0.36-0.12=3.64-0.2=0.56+4.44=7.6X8+2.4X8=1874-1000=04-58=0X0.008=0.001X100=0X4.65=3.54-0.7=0.14-0.05=3.34-0.1=0.14 + 2=9.64-6=0.724-90=1.25X5X8=0.4X0.25=21.请你直接写出得数4.84-0.8=7.5 - 0.45=5.7+33=14-0.25=6.24-0.62 - 1=0.754-1.5=0.24-4=0.21X4=1.2X60=5+3.24-0.8

8、=22.直接写出得数.0.724-0.9=23.7+2.63=4.84-0.4=0.5r 2=6.5 - 5.6=1 + 0.25=84-0.8=104-4=0.4 X 0.8=0.35X4=030.15=作编号：GB8878185555334563BT9125XW作者：凤呜大王*0.484-0.8=23.直接写出得数1.24-0.4=24-8=44-0.5=0.72 + 4=04-5.32=36+1.8=1 - 0.73=0.244-0.6=6.44-1.6=0.125X80=0.5 X 0.8=13.24-0.6=第9页（共37页）24.直接写得数.2.54-0.5=0.424-0.6=3

9、.54-0.01=0.544-0.6=0.8 - 0.35=0.25X4=12.5X0.8=0.2X50=0 + 3.68=03X0.2=25 .直接写出得数.0.564-0.7=0.64-0.65=3.94-1.3=124-0.03=5.24-0.13=99X1.01=13.5 - 2.8 - 7.2=25X0.32X125=26 . 口算3.64-1.2=8.14-9=48 0.6二1.25X8=994-0.9=254-0.05=884-0.008=14-2.5=27 .直接写得数.0.644-0.32=0.7 X 1.2=7.2+ (0.8X9)=40X0.25=04-4.8=29 2.

10、9=03X0.6=0.07X50=100X0.07=22.1X1=GB8878185555334563BT9125XW创作编号上创作杳：凤呜大王*28 . 口算0.02X0.1=12 - 4.3=364-0.01=0.8X0.125=23+0.8=0.364-0.4-9=29 . 口算.3.64-1.2=4.44-4=4.84-0.4=1 + 0.25=30 .直接写得数.6.44-8=9.8-F0.14=4.8 + 16=0.63 4-9=8.7 + 29=0.994-9.9=5.54-0.11=13.8 + 6.9=31 .直接写出得数.0.564-8=0.07X10=3 - 1.9=1.

11、2X0.1=514-0.3=4.3+15.37=2.9X10.0212.14-3.964-0.5814-0.25=0.78+6二2.44-24=6.64-0.6=50.5=344-0.2=0.8X7=8X0.6=70X0.12=32.直接写出得数.3.64-3=7.84-6=9.94-9=56.74-7=4.8 + 4=3.94-13=3.64-12=8.1 27=0.044-2=0.884-4=1.254-5=75 005=33. 口算34 .直接算出得数.2.1 + 2=3.8+1.02=7.5 X 0.4=2x - 0.7x=104-8=0.8 X 0.6=3.2 X 0.5=9.64-

12、0.06=3.574-0.7=4.5+0.76=35 .直接写出得数.22.4 4-0.25X4=0.214-7=5.64-7=1.2X5=4=424-3=6.1238.5 240.6=5=0.8=作编号：GB8878185555334563BT9125XW 作者：凤呜大王*0.544-6=36.直接写出得数.1.64-0.4=7.24-8=4.24-0.01=2 - 3.6-r 1.8=44-5=4.64-0.46=5.44-1.8=04-21.3=37. 口算1.24-3=0.484-6=4.64-23=6.84-4=0.724-12=0.72 + 4=9.64-6=5.2 + 13=12

13、.54-5=0.124-5=38.直接写得数.564-100=1.29 - 0.29=0.56X100=5.35+2.5=0.625X100=5 - 2.1=359+402=18.6 - 7=8.07X10=3.5+0.9=1.2+0.08=4X (25X14)=7.34X0=3.31+1.2=25X44-25X4=0.25+0.2+0.75=39. 口算0.424-0.6=5X0.6=2.44-0.24=1.25X2.3X8=7.8+L2=104-0.1=0.1X0.1=2.5 - 2.5 X 0.4=40.直接写出得数.10 - 9.9=0.67+03=8.9X100=2.5X4=84-1

14、6=0.9X60=1.044-2=9.14-7=1.5X8=0.39 + 39=0.254-8=0.05X300=0.454-9=7.24-9=0X5.8=4X8X0.25=GB8878185555334563BT9125XW创作编号工创作杳：凤呜大王*41. 口算.2.4 + 2=484-0.6=24 02=48 + 0.6=0.244-0.2=9.64-0.3=4.84-6=96 + 3=第11页（共37页）42.直接写出得数16"r 5=224-4=484-100=12.64-3=6.064-6=354-70=954-5=1.3X4=12.64-0.6=1.84-6=43.直接

15、写的数0.754-0.5=1.64-0.4=74-3.5=16.84-0.4=2.84-0.28=0.54-0.25=44. 口算下面各题.5.744-10=4.24-0.07=0.16X4=0.44-0.8=1.2X5=0.644-2=0.564-0.7=45.计算.0.6+0.65=3.94-1.3=12.84-4=31.5 + 5=39.6 + 4=97.84-6=11.74-3=29.4 + 2=83.54-5=46. 口算：95.24-4=67.84-2=0.964-8=0.084-0.01=0.24-0.05=0.364-0.18=5.14-1.7=0.544-0.6=4.84-0

16、.24=10 - 0.92=0.94-45=2.5X425X4=47.直接写出得数.2.84-0.4=2.5X4=10 + 0.1=4.54-0.15=7.24-0.9=1.5X6=154-0.5=5H-2=1.24-0.03=1.3X3=48.直接写出得数.03+5.7=1 - 0.6=33+5.6=0.25+5.75=53+50.7=0.48+50.28=0.35=作编号：GB8878185555334563BT9125XW作者：凤呜大王*1 - 0.04=0.9 - 0.7=10 - 9.9=8.6X100=148.3100=49 .直接写出得数.3.64-1.2=0.724-0.9=2

17、.6 13=4.84-0.4=4.4 + 4=0.784-6=7.24-0.4=14-0.25=7.1 X 0.4=4.54-0.15=1 - 0.07=0.424-0.7=第17页（共37页）50 .直接写得数0.294-100=5 1000=19+04-19=423 - (100+23)=170X100=3204-100=90 - 26 - 13=0.56X1004-1000=0.26X1000=24X99+24=38 - 25+12 - 25=5004-100X1000=二.竖式计算（共50小题）1 .竖式计算.0.514-0.5=984-5.6=20.4 + 1.7=验算:2 .川竖式

18、计算（需验算，除不尽的保留两位小数）.1.0924-0.42= 2104-1.4=8.94-0.563 .列竖式计算.69.024-3.426.8X0.3546.8 3.4 （保留一位小数）4 .列竖式计算.2.05250.13H-0.17 （商精确到百分位）4.24- 0.284.2 +1.32 （得数保留三位小数）5 .用竖式计算.117.34-0.4624X0.3740.32-FL68.6 .竖式计算2.14-0.7=7 + 0.35=7.2 + 4=7 .川竖式计算并验算.2.76X24=12.64-0.28=8 .用竖式计算.220.5 + 15=（用乘法验算）2.64X1.09=（

19、得数保留两位小数）创作编号工GB8878185555334563BT9125XW创作者：凤呜大王*6.34-0.125=0.84X1.65=9 .列竖式计算.（后两题得数保留两位小数）33.64-568.964-0.287.124-0.224.134-14.10 .竖式计算.12.44-4=45.94-0.6=514-0.3=52.84-12=75.64-0.18=9.64-0.32=11 .用竖式计算134-2.554.54-0.160.684-0.95 （保留两位小数）2.05X0.16 （验算）78.64-11=（商用循环小数表示）6.214-0.03.12 .竖式计算,带*的要验算.1

20、2.24- .25=78.6 + 11=（商用循环小数示）5.63 7.8心数保留两位小数） 28.284-0.4=*0.303 + 5=13 .列竖式计算（带的保留两位小数） 1.574-3.90.58X0.2470.74-33 （商用循环小数表示）14 .竖式”算（得数保留1位小数）带的验算 64.8 8 - 6.690.65X3.8415 .竖式计算.（带*的要验算）9.4 11=*144 + 12=14.24-11=16 .竖式计算.75.64-0.1825.64-0.0322.78X1.85.634-6.1 （得数保留两位小数）10 + 3.3 （用循环小数表示）17 .竖式计算，按

21、要求保留商的近似值.254-9.9 （保留30 + 7 （保留两位小数）60.93.2 （保留一位小数） 整数）18 .用竖式计算（1） 6.214-0.03=（2） 10.84-45=（3） 8.544-0.7=（4） 72.94-0.9=19.竖式计算.（第、题验算）©50.964-6.59.25 + 37= 15 + 74©6.724-4.2=20.用竖式计算(1) 1.254-0.25=(2) 8.4 9 0.56=(3) 8.544-0.7=(验算)（4） 78.64-11=（商用循环小数表示）21.用竖式计算.4.5X0.18=2.346 2.3=验算:70.3

22、X3.6=5.064-2.2=22.川竖式计算（带*得数保留两位小数）2.6X0.2529.9 + 0.46*4.654-1.3.23.列竖式计算（除不尽的保留两位小数）24.64-0.16； 13.9 + 6；0.325 + L5；第19贞（共37页）6.244-0.8；18.34-4； 19.2 9 6.第1S页（共37页）24.用竖式计算，并指出哪些是循环小数.7.05H-0.941.714-3.84.834-0.75.74-938.24-2.72.164-181.84-0.253.74-2.2.25.用竖式计算（1） 3.9 + 0.26%（2） 9.354-3.4 （得数保留一位小数

23、）（3） 0.174-0.11 （商用循环小数表示）（4） 0.1684-0.7（5） 4.05 + 18%（得数保留两位小数）（6） 4.684-5.4=（商用循环小数表示）26 .用竖式计算21.45H-15；49.044-8：217.6 . 34；11.74-36；1.694-26：54.814-27.27 .将下列式子的得数保留两位小数1.07 + 9.225.32 + 0.159.454-0.3213.51-0.1317.964-0.36.第#页（共37页）28 .列竖式计算.（第三小题得数保留两位小数，第五小题请写出验算过程.）47.044-5.6=3.28 X 2.7=0.764

24、 X 1.252.924-0.27=84-1.28=15.364-12=29 .列竖式计算:0.1954-0.133.64-0.876.764-0.7664-2.47.085 4-0.659.724-0.27.30 .竖式计算.(1) 0.38X0.23(2) 5.79X3.6(3) 4.6X0.25(4) 6 24(5) 52.954-75(6) 3.01 7(7) 4.954-11(8) 84.01 + 31 （用乘法验算）(9) 0.646 + 19(10) 4.7X0.59.31.计算下面各题，并用乘法验算(1) 15.6 . 12(2) 3284-16(3) 1.35 + 27(4)

25、0.6464-19.32.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）45.154-1.5=52.654-1.3=15.754-2.1=8.42+0.6=0.4364-0.2=9.254-3.7=第23贞（共37页）33.列竖式计算6.64-443.5-? 2918.94-271.354-1537.5-F628.64-1120.44-243.64 52.34.竖式计算0.448 32=14.3+6.7=3.8X0.26=11.32 - 8.95=64X5.04=43.5 0.29=验算35.用竖式计算1.261.8=5.634-6.1 （得数保留两位小数）27.8 + 2.5

26、=验算9.8X0.75=36.笔算5.02X4.8=1.35X320=264-0.13=48 + 2.3%（得数保留两位小数）37.用竖式计算，加号的要验算. 0.7564-0.18=0.35X0.48= 6.02 - 5.94=第25贞（共37页）38.用竖式计算（有的要验算）96.64-427.794-956.34-0.427H-0.350.144-0.08428.39.用竖式计算.7.8 + 75=2.554-2.5=2.5X1.04=40.列竖式计算3.5X10.880.934-26.7 （精确十分位）1.424-1.1表示）（商用循环小数41.计算下面各题，除不尽的用循环小数表示商4

27、3.8H-120.12-F0.2574-0.3511.624-9134-1130.14-33194-125.64-0.07.42.竖式计算30.64-454.064-0.58派54.6 091第27贞（共37页）43 .列竖式计算.0.58X0.08=（结果保留两位小数）0.544-0.018= 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0.73X2.157.38-F1.65.954-27.6 （得数保留两位小数）46 .用竖式计算.3.384-1830.9X2.75.

28、95 + 27.6 （得数保留两位小数）47 .列竖式计算.4.834-23=3.09-M.5=0.144-0.08=（验算）48.竖式计算.704-5.6=227.84-0.34=7.5254-0.38=49.川竖式计算下面各题，除不尽的保留两位小数8.654-0.251.84-127.24-1.1.50.川竖式计算.7.02X1.329.839.50.544-3.6第33页（共37页）小数除法计算题（口算300道+竖式200道）答案一.口算题（共50小题）1 .【解答】解:4.84-0.8=67.5 - 4.5=30.75 +15=0.0535X0.4=1.4104-0.01=100010

29、 - 2.05=7.950.6X15=0.944-0.25=161.36+2.87+3.64=7.871.8X0.4X0.25=0.182 .【解答】解:2.14-0.7=32 5=0.41 0,2=574-8=0.8755.34-0.53=100.10.01=100.25X40=10 6.5 - 5.6=0.91.264-0.6=2.10.544-6=0.093 .【解答】解30.24-2=15.1 0.014-0.5=0.02 0.724-8=0.094.84-0.06=806.4+3.6=1010 - 1.55=8.45 1.25X8=104 .【解答】解:0.94-0.03=307.2

30、 - 2=5.2 0.05X2=0.10.74X11=8.140.25X44-0.25X4=163.14-3.1=1 132+8 - 1.32+8=16 7.24-40=0.186.25 - 0.870.13=5.510.4X2.7X25=275 .【解答】解：6.34-0.3=211.8X0.5=0.925.1+4.9=302.5 X 0.5 X 4=56.【解答】解:6.44- 0.2=320.9 - 0.89=0.01 1.07+8.3=9.37 3.610=0.36100 X 1.5=150 8.1+9=17.14.5 X 0.2=0.911 - 3.9=7.17.【解答】解:56 +

31、 0.8=79.154-0.3=30.56.82 - 5.2=1.6217.2 + 0.86=202.5X0.04=0.11.84-0.1=181 - 0.5+0.5=112.5X0.8X0=08.【解答】解:1.4X100=1402.804-10=0.282.44-100=0.0240.33X1000=330904-6=150.025X100=2.5904-100=0.90.32+1.98=2.314.3+5.7=209X99+9=9009.【解答】解:104-0.01=10000.224-0.8=1.0210 - 2.05=7.9544-0.25=1604-19.8=00.2X0.05=0

32、.011.36+3.64=50.4X0.25=0.110 .【解答】解:0.254-0.5=0.50.324-0.04=81.25X4=51.6 0.4=40.544-6=0.095.64-7=0.811 .【解答】解:5.0912.50.54-0.25=245.64-1=45.632.110=0.5090.8=100.2=6.420.25X6=1.50.40.5410.212.5X0.8=100.5=0.20.9=0.60.01=102012.【解答】解:44-5=0.8 1.84-0.03=6075 4-2.5=300.2X25.4=5.083.6+4.4=8 10 - 5.2=4.83.

33、4X0.2=0.687.84-6=1.313.【解答】解:36 + 0.3=126.34-7=0.9 5.6X100=5600.25X4=10.564-28=0.02 364-0.9=40 0.64+0.8=1.440.72X3=2.1614-0.25=44 X 0.5=20.14-0.05=23.34-0.1=331.2X20=2474-5=1.46.124-0.5=12.242.94-54-0.2=2.914.【解答】解：3.44-2=1.72.74-0.3=90.424-6=0.074.12X2=8.2463 + 0.9=71.53+2.4=3.93 4.8X0.5=2.46.4-80=

34、0.0840X0.41=16.4 30.9X9=278.1 10X4.1=414.64-0.5=9.215.【解答】解：0.25+ 0.72+ 3.145X 7.2+ 14-50=0.025=0.050.9=0.8100=314.53.6=21.44- -4.1=3 0.01+0.99=176 + 7.6=11.25X4=5 50 - 0 4-2.5=5016 .【解答】解：0.354-5=0.07 03X2=0.6 0.34-0.2=1.5 0.7X0.9=0.6304-74-3=02.4 X 5=1.2 4.9 X 0=0 2X 0.45 X 5=4.517 .【解答】解：0.644-1.

35、6=0.4 1.4X0.5=0.70.724-0.9=0.810.9 - 8.9=227+72=9.90-F1.5=02.7 X 0.3=0.8124 + 0.3=8043+2.7=7200 X 0.07=14 0.25 X 4.9=1.225 44-0.8=518 .【解答】解：0.84-10=0.825+8=331874-1000=0.187 0 + 58=0237 - 9=226257+0=257 0 X 0.008=00.001 X 100=0.16.0805 X 1000=6080.5 24 X 5=12019 .【解答】解：0.634-9=0.07 5.44-1.453.72 0X

36、4.65=03.54-0.7=5第37贞（共37页）27 + 09=30.364-0.12=30.14-2=0.07 9.64-6=1.620.【解答】解:8.4-F4=2.11.1X0.8=0.882.9+3.7+2.1=8.73.64-0.2=180.56+4.44=57.6X8+2.4X8=800.724-90=0.0081.25X5X8=500.4X0.25=0.121.【解答】解:4.84-0.8=60.751.5=0.57.50.45=7.050.24-4=0.055.7+33=90.21 X4=0.8414-0.25=41.2 X60=726.2 + 0.621=95+3.24-

37、0.8=922.【解答】解:0.724-0.9=0.8 23.7+2.63=26.33 4.8 + 0.4=120.54-2=0.256.5 - 5.6=0.90.4X0.8=0.3214-0.25=40.484-0.8=0.684-0.8=100.35X4=1.4104-4=2.50.34-0.15=223 .【解答】解:1.24-0.4=324-8=0.2544-0.5=80.724-4=0.1804-5.32=036+18=5.41 - 0.73=0.270.244-0.6=0.46.44-1.6=40.125X80=100.5X0.8=0.413.24-0.6=2224 .【解答】解:

38、2.54-0.5=5 0.424-0.6=0.73.54-0.01=3500.544-0.6=0.90.8 - 0.35=0.450.25X4=1 12.5X0.8=100.2X50=1004-3.68=00.3X0.2=0.0625 .【解答】解:124-0.03=4000.564-0.7=0.8 0.6-0.65=1.253.94-1.3=3 5.2-0.13=40 99X1.01=99.99 13.5 - 2.8 - 7.2=3.5 25X0.32X125=100026 .【解答】解:3.6 + L2=38.14-9=0.94.84-0.6=81.25X8=1099.0.9=110 25

39、 4- 0.05=500884-0.008=1100014-2.5=0.427 .【解答】解:0.647.2 4- ( 0.8 X 9 )4004-4.8=00.32=21.2=0.840.25=102.94-2.9=10.30.07X50=3.510022.10.6=0.180.07=71=22.128 .【解答】解：0.02X0.1=0.002 12 - 43=7.7 364-0.01=3600 0.8X0.125=0.1 23+0.8=3.1 0.364-0.44-9=0.129 .【解答】解：3.64-1.2=3 4.44-4=1.1 4.84-0.4=12 14-0.25=430 .

40、【解答】解:6.4 + 8=0.89.8-0.14=704.84-16=0.30.634-9=0.078.7 + 29=0.3 0.994-9.9=0.15.54-0.11=5013.84-6.9=237.【解答】解:0.564-8=0.071.2X0.1=0.122.9X10.02300.07X10=0.7514-0.3=17012.14-3.933 - 1.9=1.14.3+15.37=19.6764-0.581032.【解答】解:3.6 3=1.274.84-4=1.230.044-2=0.02 07.86=133.9 + 13=0.30.884-4=0.229.94-9=1.13.64

41、-12=0.31.254-5=0.2556.74-7=8.18.14-27=0.37.54-0.05=15033.【解答】解:14-0.25=40.：6.64-0.6=11 5-0.8 X 7=5.68)0.784-6=0.1354-0.5=108X0.6=4.82.44-24=0.1344-0.2=17070X0.12=8.434 .【解答】解:2.14-2=1.053.8+1.02=4.827.5 X 0.4=32x104-8=1.25第39页（共37页）0.7x=1.3x0.8X 3.2X0.5=1.69.63.57+ 4.5+0.76=5.260.6=0.480.06=1600.7=5

42、.135 .【解答】解:22.44-4=5.6 0.25X4=10.214-7=0.035.64-7=0.81.2 X 5=6424-3=146.120.6=10.2 0.546=0.09 38.54-5=7.7 24.0.8=3036 .【解答】解：1.64-0.4=4 7.24-8=0.94.24-0.01=420 2 - 3.64-1.8=044-5=0.84.64-0.46=10 5.4 +1.8=304-21.3=00.724-12=0.061.2 + 3=0.40.484-6=0.08 4.6 + 23=0.2 6.8 + 4=L70.724-4=0.18 9.64-6=1.65.

43、24-13=0.4 12.54-5=2.5 0.124-5=0.02438.【解答】解：564-100=0.560.625X100=62.58.07X10=80.77.34X0=01.29 - 0.29=15 - 2.1=2.935+09=4.43.31+1.2=4.510.56X100=56359+402=7611.2+0.08=1.2825X4 + 25X4=165.35+2.5=7.8518.6 - 7=11.64X (25X14) =14000.25+0.2+0.75=1.239.【解答】解:0.424-0.6=0.7 5 X 0.6=32.44-0.24=101.25X23X8=23

44、7.8+1.2=9104-0.1=100 0.1X 0.1=0.012.5 - 2.5X0.4=1.540.【解答】解:10 - 9.9=0.1084-16=0.501.5X8=1200.454-9=0.05 70.67+0.3=0.970.9X60=540.394-39=0.017.24-9=0.88.9X100=8901.044-2=0.520.254-8=0.031250X 5.8=02.5X4=109.14-7=1.30.05X300=154X8X0.25=841 .【解答】解:2.44-2=1.2484-0.6=80 0.244-0.2=1.2 4.84-6=0.82.44-0.2=

45、12 4.84-0.6=8 9.64-0.3=3296 + 3=3242 .【解答】解:164-5=3.222 + 4=5.5 484-100=0.48 12.6 + 3=4.26.064-6=1.01354-70=0.5 954-5=1913X4=5.212.6H-0.6=21 1.84-6=0343.【解答】解:0.754-0.5=1.5 1.64-0.4=474-3.5=2第41页（共37页）16.84-0.4=42 2.84-0.28=10 0.54-0.25=244 【解答】解:5.744-10=0.5744.24-0.07=600.16X4=0.640.44-0.8=0.51.2

46、X 5=60.642=0.320.564-0.7=0.80.6+0.65=1.253.913=345.【解答】解:(1) 12.84-4=3.2 (2) 31.54-5=6.3 (3) 39.64-4=9.9(4) 97.84-6=16.3(5) 11.74-3=3.9(6) 29.44-2=14.7 (7)83.5 + 5=16.7(8) 95.24-4=23.8(9) 67.8.2=33.946.【解答】解：口算:(1) 0.964-(2)0.08( 3 ) 0.2(4) 0.36 (5)5.14-1.7=38=0.120.01=80.05=40.18=2(6) 0.544-(7 ) 4.8 +( 8 ) 10(9 ) 0.9 4-(10) 2.5X44-0.6=0.90.24=200.92=0.0845=0.022.5X4=1647 .【解答】解:2.5X4=10 10 + 0.1=1002.84-0.4=7 4.54-0.15=307.24-0.9=81.5 X 6=9154-0.5=3054-2=2.51.2-0.03=4013X3=3.948 .【解答】解:03+5.7=61 - 0.6=0.433+5.6=8.90.25+5.75=65.3+50.7=560.