小数除法脱式运算+简算300道含答案.docx

1、小数除法脱式运算+简算300道含答案小数除法脱式运算+简算300道一计算题（共50小题）1用递等式进行计算，能简便的要简便简便计算7.294.6+461.271 （28.718.63.1）0.8 165.324.683.70.125+6.38 40.8+14.7（14.612.5）0.72+9.63.22用简便方法计算3.74.54.43.7 0.250.254 3.841.9+0.161.1972.50.4 5.50.672（2+2.2）3用递等式计算，能简算的要简算28.774.5 9.6（15.412.2） 4.61.2+2.84.6 933.10.34计算下列各题（能用简便算法的要用简

2、便算法）（4.15+0.65）0.9 9.0614.7+5.39.06（2.3+1.052.1）2.5 9.18（5.92.3）0.255选择合理的方法进行计算，并写出计算主要过程12.50.58 17.5（5.73.2） 48.7732.768.410.252.50.4 18.12.84.6 3.0110130.10.16脱式计算，能简算的要简算4.82.042.4 1.1（225） 25400.472+0.90.125 17.370.453.860.1 9.0722.783.4+3.77用递等式计算，能简算的要简算10.0110110.01 0.111.8+8.20.112620.28.4

3、1.8 12.051.250.88递等式计算（能简算的要简算）6.599 4.652.551.45 2.20.25+2.80.25 0.256.8249计算下面各题，能简算的要简算1024.5 8（201.25） 8.3+8.399 （1.25+12.5+125）810计算（能简算要简算）2.64+8.67+7.36+11.33 2.749.5+0.52.7 （24004802.5）1.616.810.1 1.2588 6.8740（3.493.09）11脱式计算（能简简的要简算）2.8+0.22.8+0.2 3712.50.8 1.25（10+0.8）10.83.80.40.76 0.36（

4、6.14.6）0.812计算下面各题，能简算的要简算4.050.9+5.5 3.6710.13.670.1990.73+0.73 3.3+6.73.513怎样简便怎样算3.72.50.4 0.251.2532 9.831.5+0.6171514计算下面各题（能简算的要简算）12.13+7.512.13 7.69（3.7+2.69） 7.81.019.43.2+60.32 12.53.2 13.8（1.382）15下面各题，怎样简便就怎样算432.5250.4 1.253.22.5 0.8199+0.815.910.1 10052.847.2 （40.4）0.2516计算下面各题，能简算的要简算

5、0.75180.15 9.30.1258 1.7899+1.784.74.28+5.34.28 2.310.2 21.360.225.917怎样简便就怎样计算 28.499+28.43.62010.942.50.4540.812.52.517.50.2517+1315.588.20.7218计算，能简算的要简算1.252.50.843= 100.22.5= 8.40.210.5=644.5+3.645= 1.253.20.8= 14.5102=19脱式计算，能简算的要简算0.34101 8.81.25 2.946.3+3.72.9421.99.2810.72 2.7+（11.22.7）0.4

6、1.50.02（2.12.09）20计算下面各题（能简算的要简算）10.722.783.4 5.517.3+6.75.5 3.760.42.5 0.2512.53.221递等式计算，能简便计算的要简便计算4.625 3.7512.50.8 2.5+7.54（3.21.4）0.181.8 7.97.1+2.97.9 （30.24.65）0.1222下面各题，怎样简便就怎样计算0.750.50.8 5.615.7+9.35.6 50.41.91.823计算下面各题，注意运用简便方法2.40.2560 0.256.8405.520.550.45 0.497.27.20.3924计算，能简算的要写出简

7、算过程40.82.512.5 2.254.8+77.50.4825计算下面各题，能简算的要简算13.73+6.270.3 180.42.5 0.7599+0.752.855.35+2.854.65 1.50.41.50.426怎样简便就怎样计算28.499+28.4 3.6201 0.942.50.4540.812.52.5 17.50.2517+13 1.258.0827下面各题，怎样算简便就怎样算2.45（1.45+0.89） 1.251.70.8 5.30.820.820.3 3.612（0.530.45）28计算下面各题，能简算的要简算 125322.5 2.6（3.4+1.6）6.7

8、5.5+5.53.336999.072.27.8 17.642.529计算下面各题，能简算的要简算2.50.274 0.63101 0.78+0.2253.712.5+4.312.5 （0.36+5.4）0.6 4.50.251.630脱式计算（能简便的用简便计算）1.6（2.25+10.51.5）7457+43740.6（6.14.6）0.8101929212564 46.20.56+5.375.6+10.05631脱式计算（能简算的就简算）1.5102 1.252130.8 720.8110.41.255.6 6.050.5+10.75 29.60.81.2532脱式计算下列各题，能简算的

9、要简算 2.6999+2.69 1.252.30.8 3.175.6+4.43.17380.250.4 6.50.125 0.2250.25433脱式计算（能简算的要简算）17.54+28.35+3.46+1.55 32.3613.43（7.57+1.36） 7.22.7450.363.855.6+5.43.853.85 （3.2+0.128）0.8 （13.38.8）3.20.3634脱式计算（能简算的要简算）0.7540.254 6.310.1 15.588.20.72 4.5360.81435脱式计算，能简算的要简算7.52+1.250.5987.5800.25+0.75193.8+3.

10、81.253.40.85.120.42.536计算，能简算的要简算55.04+12.83.3 0.25320.125 7.875+750.237用你喜欢的方法计算0.21140.5 0.25134 1.259.71.251.716.5（5.2+4.8）1.5 （8.920.45）（2.5+4.5）38下面各题怎样算简便就怎样算6.80.46+0.54 5.42.3+5.47.70.253212.5 751.25839用递等式计算，（有用简算）7.87.2+0.9 0.38+0.26+3.4 （12545）313+（41+22）96.7+2.5+3.31325440脱式计算，能简算的要简算12.

11、8+2.049.5 0.151999+0.15 0.766.50.765.5 780.250.441计算下面各题，怎样简便就怎样计算4.050.5+10.75 6.82.7+2.73.2 6.80.750.570.317.487.6 8.51.23.4 13.750.1252.742计算下面各题，能用简便方法计算的要用简便方法0.75180.156.150.1250.84.550.280.471.72.50.081.89111.893.60.35+6.40.3543计算下面各题，能简算的要简算3.4+6.60.3 251.250.040.8990.73+7.30.1 96.51.250.844

12、脱式计算（能简算的用简算方法）82.412.45 18.53.214.79 8.4+3.8+1.6+6.20.2517.30.4 7.2（10+0.1）3.540.290.292.5445计算下列各题，怎么简便就怎么算 0.12532 8.80.254 56.599+56.50.78101 9.92.072.3 12.7514.6（1.3+8.2）46计算，能简算的要简算 60.8363.6 12.57.20.89978.5+78.5 24.68.91.10.9+9.9+99.9+999.9 69525447脱式计算（能简算的要简算）5.8+6.390.5 1.250.81.250.8 1.9

13、20.122.72.651.7+1.351.71.71380.254 1.252.53.248你能想出简便方法来计算下面各题吗？255+745+5 6.74+12.62+24.38+3.26872.1230.877 30.65（7.65+5.4）（40+8）125 3238+326249脱式计算（能简算的要简算）65102 8.23（2.67+3.23）3216+14328.46+7.26+1.51+2.84 27（263+37）50125322550递等式计算（能简算的要简算）5.60.25 0.320.2512.5 6.4（0.32+0.2）2016.56.5 1024.5 2.20.25

14、+2.80.25小数除法脱式运算+简算300道参考答案与试题解析一计算题（共50小题）1【解答】解：7.294.6+461.271 =7.294.6+4.612.71=（7.29+12.71）4.6=204.6=92；（28.718.63.1）0.8 =（28.76）0.8=22.70.8=18.16；165.324.68=16（5.32+4.68）=1610=6；3.70.125+6.38 =3.7+6.3=（3.7+6.3）=10=；40.8+14.7（14.612.5）=40.8+14.72.1=40.8+7=47.8；0.72+9.63.2=0.72+3=3.722【解答】解：（1）3

15、.74.54.43.7=3.7（4.54.4）=3.70.1=0.37；（2）0.250.254=0.25（0.254）=0.251=0.25；（3）3.841.9+0.161.1=（3.84+0.16）（1.9+1.1）=43=1；（4）972.50.4=92.80.4=91.12=7.88；（5）5.50.672（2+2.2）=5.50.6724.2=5.50.16=0.883【解答】解：（1）28.774.5=4.14.5=18.45（2）9.6（15.412.2）=9.63.2=3（3）4.61.2+2.84.6=4.6（1.2+2.8）=4.64=18.4（4）933.10.3=30

16、0.3=1004【解答】解：（1）（4.15+0.65）0.9=4.80.9=4.32；（2）9.0614.7+5.39.06=9.06（14.7+5.3）=9.0620=181.2；（3）（2.3+1.052.1）2.5=（2.3+0.5）2.5=2.82.5=7；（4）9.18（5.92.3）0.25=9.183.60.25=9.180.9=10.25【解答】解：（1）12.50.58=12.580.5=1000.5=50；（2）17.5（5.73.2）=17.52.5=7；（3）48.7732.768.4=48.773.9=44.87；（4）10.252.50.4=10.25（2.50.

17、4）=10.251=10.25；（5）18.12.84.6=18.112.88=5.22；（6）3.0110130.10.1=3.01（1011）=30.1100=301006【解答】解：（1）4.82.042.4=4.82.42.04=22.04=（2）1.1（225）=1.1225=0.055=0.25（3）25400.4=250.440=1040=0.25（4）72+0.90.125=72+7.2=79.2（5）17.370.453.860.1=38.638.6=0（6）9.0722.783.4+3.7=9.076.7+3.7=2.37+3.7=6.077【解答】解：（1）10.0110

18、110.01=10.01（1011）=10.01100=1001（2）0.111.8+8.20.11=0.11（1.8+8.2）=0.1110=1.1（3）2620.28.41.8=525.2（8.4+1.8）=525.210.2=515（4）12.051.250.8=12.05（1.250.8）=12.051=12.058【解答】解：6.599=6.5（1001）=6.51006.5=6506.5=643.54.652.551.45=4.65（2.55+1.45）=4.654=0.652.20.25+2.80.25=（2.2+2.8）0.25=50.25=1.250.256.824=（0.2

19、54）6.82=16.82=6.829【解答】解：1024.5=（100+2）4.5=1004.5+24.5=450+9=459 8（201.25）=82081.25=16010=1508.3+8.399 =8.3（1+99）=8.3100=830（1.25+12.5+125）8=1.258+12.58+1258=10+100+1000=110+1000=111010【解答】解：2.64+8.67+7.36+11.33=（2.64+7.36）+（8.67+11.33）=10+20=302.749.5+0.52.7=26.03+1.35=27.38（24004802.5）1.6=（2400120

20、0）1.6=12001.6=75016.810.1=16.8（10+0.1）=16.810+16.80.1=168+1.68=169.681.2588=1.25（80+8）=1.2580+1.258=100+10=1106.8740（3.493.09）=6.87400.4=6.87100=68711【解答】解：（1）2.8+0.22.8+0.2=（2.82.8）+（0.2+0.2）=0+0.4=0.4（2）3712.50.8=37（12.50.8）=3710=3.7（3）1.25（10+0.8）=1.2510+1.250.8=12.5+1=13.5（4）10.83.80.40.76=10.81

21、.520.76=10.82=8.8（5）0.36（6.14.6）0.8=0.361.50.8=0.361.2=0.312【解答】解：（1）4.050.9+5.5=4.5+5.5=10（2）3.6710.13.670.1=3.67（10.10.1）=3.6710=36.7（3）990.73+0.73=（99+1）0.73=1000.73=73（4）3.3+6.73.5=3.3+23.45=26.7513【解答】解：3.72.50.4=3.7（2.50.4）=3.71=3.7 0.251.2532=0.251.25（48）=（0.254）（1.258）=110=10 9.831.5+0.61715

22、=9.831.5+6.171.5=1.5（9.83+6.17）=1.516=2414【解答】解：12.13+7.512.13=12.1312.13+7.5=0+7.5=7.5 7.69（3.7+2.69）=7.693.72.69=7.692.693.7=53.7=1.37.81.01=7.8（1+0.01）=7.81+7.80.01=7.8+0.078=7.8789.43.2+60.32=9.43.2+0.63.2=3.2（9.4+0.6）=3.210=32 12.53.2=12.5（80.4）=12.580.4=1000.4=40 13.8（1.382）=13.81.382=102=515【

23、解答】解：432.5250.4=432.5（250.4）=432.510=43.251.253.22.5=1.25（80.4）2.5=（1.258）（0.42.5）=101=100.8199+0.81=0.81（99+1）=0.81100=815.910.1 =5.9（10+0.1）=5.910+5.90.1=59+0.59=59.5910052.847.2=100（52.8+47.2）=100100=0（40.4）0.25=40.250.40.25=10.1=0.916【解答】解：（1）0.75180.15 =0.750.1518=518=90；（2）9.30.1258 =9.3（0.125

24、8）=9.31=9.3；（3）1.7899+1.78=1.78（99+1）=1.78100=178；（4）4.74.28+5.34.28 =（4.7+5.3）4.28=104.28=42.8； （5）2.310.2 =2.3（10+0.2）=2.310+2.30.2=23+0.46=23.46； （6）21.360.225.9=106.825.9=80.917【解答】解：（1）28.499+28.4=28.4（99+1）=28.4100=2840（2）3.6201=3.6（200+1）=3.6200+3.61=720+3.6=723.6（3）0.942.50.45=2.350.45=1.9（4

25、）40.812.52.5=（42.5）（0.812.5）=1010=100（5）17.50.2517+13=7017+13=1190+13=1203（6）15.588.20.72=1.90.72=1.1818【解答】解：（1）1.252.50.843=1.250.82.543=12.543=107.5；（2）100.22.5=10（0.22.5）=100.5=20；（3）8.40.210.5=400.5=80；（4）644.5+3.645=644.5+364.5=（64+36）4.5=1004.5=450；（5）1.253.20.8=1.250.83.2=13.2=3.2；（6）14.5102

26、=14.5（100+2）=14.5100+14.52=1450+29=147919【解答】解：（1）0.34101=0.34（100+1）=0.34100+0.341=34+0.34=34.34；（2）8.81.25=（1.18）1.25=1.1（81.25）=1.110=11；（3）2.946.3+3.72.94=2.94（6.3+3.7）=2.9410=29.4；（4）21.99.2810.72=21.9（9.28+10.72）=21.920=1.9；（5）2.7+（11.22.7）0.4=2.7+8.50.4=2.7+3.4=6.1；（6）1.50.02（2.12.09）=1.50.02

27、0.01=1.52=320【解答】解：10.722.783.4 =10.76.7=4 5.517.3+6.75.5=5.5（17.3+6.7）=5.524=1323.760.42.5=3.76（0.42.5）=3.761=3.76 0.2512.53.2=0.2512.5（40.8）=（0.254）（12.50.8）=110=1021【解答】解：（1）4.625=（4+0.6）25=425+0.625=100+15=115；（2）3.7512.50.8=3.75（12.50.8）=3.7510=0.375；（3）2.5+7.54=2.5+1.875=4.375；（4）（3.21.4）0.181.