四年级小数加减法口算800题.docx

四年级小数加减法口算800题.docx

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四年级小数加减法口算800题

第1天

8.78-0.52=1.27+0.31=8.42-7.04=16.76+6.61=0.41+0.95=

4.15+7.08=2.59+9.10=3.51+9.00=4.54+2.55=8.70+1.16=

1.31+5.61=7.21-0.77=8.64-7.85=8.68+0.84=2.62+3.19=

5.93-1.20=3.66+5.90=6.14-2.01=5.58+0.13=5.15-4.79=

第2天

5.29+6.33=5.86-1.95=3.79-3.47=8.89-0.20=7.42+9.92=

3.58-2.87=7.31-2.51=8.81-5.75=6.67-2.72=3.04+5.71=

1.73+4.32=4.47+9.24=8.53+3.94=8.36-3.72=6.78-1.84=

6.35-2.83=4.36+7.50=7.57+6.82=5.18+2.34=8.74-6.93=

第3天

7.96+2.29=4.58+5.79=1.05+9.02=4.30-4.19=4.94-2.06=

7.93-4.75=6.03-2.94=4.62+3.02=9.32+3.40=5.43+3.23=

3.55+5.33=8.21-4.90=2.38+2.40=9.28+1.69=6.89-0.88=

4.97+7.29=3.34+4.51=6.29+0.67=9.60+0.73=2.23+5.50=

第4天

9.81-0.09=

2.80+6.46=7.74+1.48=4.22-2.66=8.28+7.36=

7.48-6.52=4.64-3.25=5.62+2.82=6.63+7.16=5.94-0.36=

8.80+7.97=7.87+9.72=8.76+0.75=7.37-4.92=7.52-1.82=

3.42+6.99=4.06+4.85=7.55+7.05=9.40-8.83=

7.41-2.14=

第5天

2.53+4.77=8.23-2.35=4.45+6.35=1.00+4.02=5.20-1.50=

27.38+4.83=26.75+2.83=3.64-2.58=6.52-3.44=15.31+13.51=

5.5+4.5=3.27-2.49=11.65-7.39=19.01-7.99=7.51+0.49=

5.48-3.25=

4.8+18.9=10.3+58.7=

8.03-4.56=9.03-8.57=

第6天

8.25+1.55=9.43-9.05=1.75+2.08=

4.28-3.37=

4.13+2.24=

4.17+2.53=5.07-0.98=5.67-0.73=

13.18+5.27=5.16+7.89=

26.8+3.02=6.07-4.993=3.7+2.36=

15.4+2.97=10.2-8.75=

7.3-2.25=

3.8+3.54=3.05-2.9=

3.1-2.07=12.7+6.58=

第7天

7.81-3.735=12.16+5.347=0.4-0.125=18.7+3.96=9.6+4.78=

5.67-0.845=0.506-0.19=11.04-7.3=1.4-0.405=62.1-17.07=

1.4-0.405=3.906+0.66=43.5-27.34=15.98-3.9=75.6-3.55=

5.94+10.7=12.03+0.875=37.8+3.02=0.704-0.25=10.1-0.55=

第8天

27+8.03=

26+7.98=

13.99+1=

7.88+2=

28-3.56=

10-0.81=

10-0.36=

20-0.92=

8-7.089=

95-9.85=

20-9.42=

35.09-11=

96.85-85=

45.45-45=

10-0.41=

45-0.45=

3.57+3=

1.5-0.5=

1-0.9=

2.3＋0.6=

第9天

0.9＋0.8=

1-0.3=

3.4-1.5=

1.9-0.9=

3.5-2.4=

0.36+0.64= 

3.5+4.2=

6-0.5=

2.7-0.4= 

0.8+0.7=

4.5-3=

7.8-1.1= 

1.5－0.5=

1－0.9=

2.3＋0.6=

0.9＋0.8=

1.9－0.9=

3.5-2.4=

0.36＋0.64=

0.96－0.3=

第10天

8.65－6.31= 

2.5+0.9=

1.2-0.5=

7.8+1.6=

0.39+0.15=

3-1.4=

4.7-2.8=

7.2-6.45=

15-0.48=

6.77-1.78=

3.45+5.75=3.40+58.20=49.80+49.20=

111.6-99=

7.8+21.02=

5.6-1.42=

12.5+0.9=

4.5-2.83=

3.75+2.25=

2.98+0.56=

第11天

12.53+4.67=

6.07+4.89=

5.64-1.78=

10.2-6.45=

5-0.41=

0.3+1.5=

2.5+9.8=

7.6+1.3=

4.4+5.7=

2.3+7.7=

5.7+3.1=

7.69+2.31=

9.16+2.64=

5.68+12.22=

16.8+16.5=

26.3+14.6=

6.9+3.4= 

52.3+64.7=

12.75-5.3=

8.24+16.93=

第12天

0.75＋0.4=

20＋0.78=

4.8＋4.2=

5.7－3=

4.9－1.7=

1.34＋0.8=

2－0.75=

8.7＋0.03=

0.2－0.09=

8.5＋2.5=

2.4－1.4=

0.68＋0.42=

7.82－7.2=

2＋9.1=

0.48＋0.52=

8.1－5.1=

0.78－0.24=

0.8＋0.18=

0.89－0.25=

1－0.98=

第13天

0.9＋0.1=

1－0.8=

4.5－4=

5.6＋4=

10－4.4=

6＋6.6=

9.5－2.7=

1－0.55=

3.7＋4.8=

7＋3.3=

3．25＋0．75=

2.7＋3.9=

0．7＋0．9=

0.9＋1=

14．6－0．4=

10－0．1=

14＋0．78=

3＋2.7=

5－0．08=

1．64＋2．35=

第14天

1．1－1=

8．34－6．22=

1.3＋4.3=

7.2＋6.9=

9.3－8.8=

4.4＋15.99=

19.8－5.6=

96.3－56.2=

79.2＋56.8=

1.9＋25.793=

88－69.21= 

136.5－105=

73.4+52.1=

93.1-20.9=

63.1-11=

0.33+9.8=

7.8+6.9=

0.2+2.7=

5.6+4.4=

9.4+0.06=

第15天

0.7+0.4=

0.5－0.45=

10－0.1= 

1.8－0.9=

12.6－1.2=

17+0.33=

1.01+0.6=

7－0.05=

9－0.26= 

6.14+3.83=

7.93-1.64=

5.23-2.36= 

3.44+3.36=

8.63-3.48=

1.16+4.77=

7.74-5.85=

9.35-4.74=

4.93+4.75=

8.17-5.26=

2.26-0.86=

第16天

6.55+4.68=

1.1+4.5=

1.9+3.4=

3.45+4.6=

4.45+4.5=

9.4-2.75=

7.3-1.26=

3.83+5.55=

2.75+1.3=

7.6-2.15=

1.9+6.2=

7.1-6.6=

6.8-2.8=

44.4+1.4=

1.7+9.66=43.3+6.3= 

55.5-1.9=

38.9-5.55=64.41+8.67= 

0.7＋0.9=

第17天

3.8＋0.6=

8.24+3.76= 

4.1－3.8=

14＋0.78=

14.6-0.34= 

1.3+8.56=

0.8-0.55=

1-0.03=

30.5+3.05=

0.8-0.45=

3.25＋0.75=

0.78+2.2=

5-0.08=

10-0.1=

10－7.64=

13.6＋8.46=

0.99＋1.1=

1.23+6.52=

5.32-0.93=

6.35-5.23=

第18天

1.23+5.69=

1.26+5.21=

0.96-0.23=

7.26-4.93=

2.16-0.23=

4.63+8.9=

9.28+7.32=

5.2-0.9=

2.65+9.32= 

7.65-6.23=

8.28+4.75=

9.23+5.45=

6.23-4.53=

8.52+4.65=

5.2+2.63=

4.62+8.95=

7.24+6.21=

3.8-2.3= 

0.7＋0.9=

0.8＋0.6=

第19天

8.24＋3.76=

4.1－3.8=

14＋0.78=

14.6－0.34=

1.3＋8.56=

0.8－0.55=

10－0.1=

4－0.04=

1－0.03=

30.5＋3.05=

0.8－0.45=

0.78＋2.2=

5－0.08=

3.25＋0.75=

8.65－6.31=

10－7.64= 

13.6＋8.46=

0.99＋1.1=3.17+3.43= 

6.82+15.55=

第20天

34.85-11.73=

75.80+59.35=

50.10-48.60=

91.91-75.10=

53.73-31.75=

64.48-14.42=

39.03-14.98=

28.36-24.00=

61.83+69.95=

65.36-38.06=

29.37-18.02=

42.09-32.46=

64.39+40.78=

18.08+34.00=

47.63-31.59=

17.42-10.44=

16.24-14.18=

55.89-28.75=

67.23-19.17=

22.04+80.13=

第21天

1.2－0.12=

1－0.385=

3.2－2.3=

0.76－0.38=

15－7.3=

2.1+0.2=

0.3+0.7=

3.6+1.6=

7.5-0.5=

2.13-0.02=

3.51+0.2=

102+0.3=