人教版四年级数学下册小数混合运算综合练习题111.docx

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人教版四年级数学下册小数混合运算综合练习题111.docx

人教版四年级数学下册小数混合运算综合练习题111

一、口算。

5.6+0.7=7.7-4.4=0.63-0.49=1.5-0.3=

5.1+0.7=6.4+1.5=0.86+0.47=6.5-0.4=

5.1-0.6=8.4+2.5=0.7+0.11=7.8+0.7=

6-0.9=7.2-3.7=0.85-0.43=2.9+0.9=

5.3+0.3=7.4+4.5=0.64-0.43=3.5+0.6=

2.5+0.1=6.8-3.8=0.71+0.03=2.8-0.3=

4.2-0.2=7.1-1.5=0.73-0.28=7+0.2=

8.1+0.6=6.2-2.1=0.6+0.07=4-0.1=

二、混合运算。

0.8+0.09+9.15.2-0.87-1.1344.1-15-13.1

64.71+35.29+81.9765.74-23.71+95.477.13-1.09-5.39

30-(4.49-0.15)89.8-(27.2-1.3)4.03-1.17+1.18

一、口算。

4.4-0.3=7.3-2.1=0.89+0.24=4-0.2=

3.9+0.7=6+3.4=0.82-0.33=2.5-0.8=

3+0.9=6.7-4.6=0.85+0.1=7.5-0.4=

8.4-0.4=6.9-3.9=0.88-0.33=2.3-0.6=

5.8+0.7=8.2+0.2=0.88-0.48=5.7+0.4=

1.9+0.1=8.8+2.1=0.73-0.2=4.4-0.9=

8.4+0.3=6.7+0.9=0.64+0.14=5.6-0.8=

5.2+0.4=6.1+2.2=0.67+0.24=6.2+0.8=

二、混合运算。

0.79+0.38+2.96.7-0.72-0.2869.4-50.5-14.6

79.91+18.55+55.6562.77-32.34+16.334.46+2.3+2.11

80-(6.14-0.87)64.1-(27.1+2.7)6.83+1.72-2.57

一、口算。

5+0.6=7.5+2.2=0.68+0.02=6.4-0.1=

9+0.4=6.6+0.7=0.61+0.34=6.5-0.6=

2.1+0.8=8.3-1.7=0.81-0.34=2.7-0.8=

5.6+0.4=6.5+0.1=0.72-0.1=1-0.8=

8.3-0.3=8.9+3.4=0.62+0.24=3.4-0.3=

6.9-0.3=6.6+4.7=0.83-0.21=6.9-0.5=

8.3-0.6=7.5-1.7=0.88-0.2=8.5-0.8=

1.1+0.1=6.9-0.3=0.74-0.42=8.3+0.2=

二、混合运算。

0.71-0.4+1.88.6-0.57-0.4348.4-18.4+28.4

77.77+34.18+64.0972.43+38.99+86.523.54-1.52-1.89

70-(7.01-0.66)77.2-(24.6-7.1)6.06+2.23-1.34

一、口算。

3.2-0.7=7.9+4.5=0.7-0.32=1.1-0.5=

5.2+0.1=8.6-3.1=0.78+0.15=2.1-0.9=

3.7+0.2=6.2+2.6=0.86+0.26=1-0.3=

6.4-0.1=9+3.9=0.77-0.33=7.5-0.6=

6.8-0.5=7.3-4=0.65-0.03=1-0.2=

4.8+0.1=6.4-0.6=0.78+0.4=1.8+0.4=

7.6+0.1=7.4-0.6=0.71+0.36=1+0.6=

2.1+0.6=9-3.5=0.88-0.14=2+0.7=

二、混合运算。

0.86+0.18+0.25.3-0.35-4.6578-45.5+16.1

68.81+19.7+33.5379.76-41.82+91.527.88+2.79-5.02

30-(6.4-0.59)71.2-(24.8-5.5)9.85-2.73+5.28

一、口算。

2.2-0.8=7.1+4.8=0.72-0.46=2.7-0.2=

8.8+0.6=7.7-0.3=0.89+0.26=2-0.7=

2+0.2=6+2.8=0.81-0.33=1.7-0.1=

5.1-0.2=6.1+1=0.9-0.4=1.8-0.1=

2.5-0.5=7.2+0.9=0.73+0.48=8.7+0.6=

4.8-0.7=6.9+1.1=0.64+0.07=6.2-0.6=

9+0.4=6.5-0.5=0.76+0.31=7.5-0.6=

9+0.9=7.2-1.1=0.86+0.33=2.2-0.1=

二、混合运算。

0.9-0.1+8.25.6-0.35-2.6597.3+46.3+40.9

60.08-46.02+98.8861.49+31.03+93.594.31-2.03-1.48

50-(6.13-0.36)60+(10+1.5)8.4+6.63+1.74

一、口算。

6.8-0.1=9-3.5=0.74+0.23=2.5-0.2=

1.8-0.8=6.8-4=0.9-0.34=7.3-0.2=

7.5-0.6=8.8-4.8=0.83-0.38=6.8-0.4=

5.6+0.9=8.5+1.5=0.76-0.08=8.3+0.7=

8.7+0.4=6.9+4.5=0.78+0.47=4.6-0.1=

8.4-0.9=6.1+4.9=0.83+0.37=8.7-0.1=

7.6+0.1=7.1-0.9=0.7+0.36=3.1+0.2=

6.8-0.9=6.6-3.4=0.66-0.32=7.5+0.6=

二、混合运算。

0.74-0.02+7.69.7-0.67-0.3378.1-20.7+52.5

78.23-39.08+53.3786.79+34.22+28.324.31+2.74+1.23

50-(2.77-0.73)96.6+(14.5+7.2)3.92-2.03+1.29

一、口算。

6.4-0.7=6.2-1.6=0.63-0.35=8.7-0.7=

6-0.3=8.6-3.6=0.66-0.47=8.6-0.7=

2.5+0.1=6.4+2.9=0.64+0.44=2.7-0.4=

4+0.6=7.5+4.5=0.65+0.31=4.5-0.7=

8.8-0.6=6.7+1.5=0.83-0.03=8.8+0.4=

4.5+0.7=6.6+0.4=0.66-0.06=3.9-0.4=

5.3+0.9=7.9+3.7=0.68-0.33=6.2-0.7=

4.8+0.4=6.8-1.2=0.65+0.49=6.1+0.7=

二、混合运算。

0.75-0.33+1.79.1-0.82-2.1848.6+24-21.5

84.26+35.89+58.567.92+28.23+65.437.18+5.63+1.42

40-(4.59+0.14)74.5+(25.4+4.8)3.64-1.78+1.66

一、口算。

8.5-0.8=7.7+4.5=0.88-0.48=2-0.8=

5-0.4=7.3+3=0.83-0.47=7.7+0.6=

6.7-0.5=7.9-4.3=0.72-0.39=1.9-0.3=

3.8-0.6=8.9+3.1=0.67+0.27=7.5+0.5=

2.3+0.5=8.6-4.7=0.78+0.22=5.4-0.5=

5.7-0.9=7-2=0.9+0.11=3-0.5=

7.3-0.5=7+3.8=0.83+0.47=6.9-0.7=

6.9+0.7=9-1=0.78+0.1=3.6-0.6=

二、混合运算。

0.64-0.18+9.25.8-0.48-2.5261.1+10.6+11.3

71.82+10.67+34.1272.39+16.26+25.673.58-1.92-1.02

40-(1.04+0.61)69.9+(16+3.3)5.96-2.59+2.45

一、口算。

6.2-0.2=9+1.3=0.87-0.11=6.9+0.5=

3.1-0.5=7.9-4.6=0.88-0.18=7.3+0.2=

1.9-0.2=6.2-2.5=0.69+0.22=7.2+0.9=

6.7-0.4=7.4+1.8=0.7-0.16=1-0.2=

5.9-0.3=7.6-4.1=0.64+0.09=4.2-0.9=

7.1+0.3=7+4=0.71-0.03=8.5+0.7=

4.4-0.1=9+1.3=0.82-0.26=7.8+0.3=

8.1-0.5=8.6+3.1=0.73-0.25=4.6+0.4=

二、混合运算。

0.84+0.4+1.55.7-0.73-0.2780.2+54.6+20.6

80.09+46.11+72.3885.28-31.18+66.754.69+2.87+1.5

80-(9.93+0.21)62+(25.5+5)5.43+1.57-2.92

一、口算。

8.8-0.3=8-0.8=0.6-0.25=6.3-0.7=

3+0.5=8.5-1.5=0.89+0.3=9+0.2=

7.6+0.1=8.7-2.3=0.89-0.04=4.3+0.8=

7.1+0.8=7.3-3.5=0.6+0.17=5.6+0.6=

8-0.7=8.1+4.9=0.89+0.13=6.9-0.7=

2.4-0.4=6.6+0.7=0.67+0.04=1.9+0.7=

1.5-0.1=8.1+3.9=0.8+0.19=2.3-0.1=

1.8+0.9=6.5+2.9=0.84+0.25=3.8-0.3=

二、混合运算。

0.83-0.28+1.77.8-0.55-4.4546.9+23.5+14.3

87.66+38.99+95.5580.02+12.94+68.298.98+1.63+1.25

40-(8.01+0.37)67.6-(25.6-5.5)8.65-3.13+4.57

一、口算。

7.8+0.2=6.3+1.3=0.64+0.33=4.3-0.6=

1.2-0.6=7.4+2.5=0.69+0.16=8.5+0.9=

8.7-0.3=6.7-0.4=0.75+0.2=8.6+0.9=

8.2+0.6=7.6+3.2=0.61-0.06=4.7+0.8=

3.2-0.7=8.7+4.2=0.6-0.01=8-0.9=

4.9-0.4=6.3+2.4=0.61-0.18=1.8-0.1=

1.1+0.6=6.8+4.3=0.84-0.26=8.4-0.7=

1.8+0.2=8.3-2.9=0.67-0.01=2.7+0.2=

二、混合运算。

0.9-0.41+8.49.4-0.65-0.3584.3+13.8+57.2

86.49-15.37+49.0874.45-31.96+79.368.07+2.04-4.47

30-(8.3+0.83)72.4+(22.6-3.6)4.52+2.02-1.76

一、口算。

1.4-0.7=6-3.1=0.89-0.12=7.5+0.5=

3.2-0.7=8.8+0.6=0.9-0.35=6.4-0.3=

9+0.3=6-0.7=0.82+0.1=2.1+0.2=

3+0.3=8.7-2.2=0.76+0.09=8+0.2=

6.5+0.3=7.9-0.2=0.9+0.02=2-0.8=

7+0.7=6.7+4.7=0.6-0.01=1.1+0.8=

3.1+0.6=8.2+2.1=0.62-0.28=5.4+0.6=

6.3+0.3=7-3.3=0.73-0.25=2.8+0.1=

二、混合运算。

0.6-0.12+2.57.3-0.84-0.1675.9+54-13.4

66.91-34.17+51.1668.66+38.02+77.138.33-1.76+3.62

30-(1.06-0.78)69-(23.2+2.7)5.32-1.63-2.02

一、口算。

3.8-0.4=6.4-2.7=0.78-0.44=5.4-0.9=

3.6+0.7=6+3.5=0.88+0.07=7.2-0.2=

3.2+0.5=6.9-1.3=0.64+0.03=8.1+0.6=

2.5+0.3=7.9-3.9=0.88-0.46=4.4+0.7=

8.1+0.9=7.6-1.7=0.74+0.13=9+0.7=

2.3-0.8=6.5+3=0.65-0.43=7.4-0.4=

4.4+0.3=8.7-2.9=0.74-0.17=5.9-0.8=

1.5+0.6=7.2-2.7=0.84+0.14=6.2+0.9=

二、混合运算。

0.61-0.44+0.35.2-0.71-2.2968.2+17.3+45.2

60.54-33.8+75.6484.94+17.23+36.177.37-2.39-4.89

70-(3.29+0.4)94.4-(14.7-8.8)6+1.84-2.18

一、口算。

1.8+0.7=7.5+1.2=0.67-0.22=5.2+0.5=

4.3+0.6=6.2+1=0.89+0.38=8.6+0.4=

4.5+0.4=8.7+3.1=0.82-0.36=5.2+0.2=

1.3-0.7=7.8+1.7=0.63+0.22=6.6-0.6=

7.3-0.5=8.6-4=0.7-0.48=6.3-0.3=

3.1-0.1=7.4+3.5=0.76+0.41=2.7-0.3=

3.1-0.2=8-3.8=0.64+0.26=3.2-0.6=

6.8+0.8=7.2-3.9=0.81+0.44=5.6-0.5=

二、混合运算。

0.65+0.46+4.76.2-0.36-3.6475.6-46.5+13.3

75.06+20.03+53.6173.77+30.38+918+3.15+4.37

40-(4.77+0.45)77.5-(16.3-8.2)4.13+1.99+1.28

一、口算。

8.7+0.6=7.3+3.3=0.79-0.37=6.6+0.7=

2-0.3=6.6-3.1=0.68-0.02=8.3+0.5=

8-0.2=7.3-1.9=0.71+0.48=4.1-0.5=

8.8+0.5=7.7-2=0.76-0.46=5.1-0.6=

6.3+0.7=6.1+3.3=0.65-0.09=6.1+0.7=

8.6+0.2=9+1.1=0.84-0.24=2.2+0.3=

1.6+0.9=6.4-1.6=0.82-0.19=7.9-0.4=

2.1+0.9=6.4-2.2=0.87-0.33=4.8-0.7=

二、混合运算。

0.74+0.26+0.66.2-0.34-3.6638.6+15.6-21.8

62.14-15.42+84.8874.87+40.92+37.417.27+3.78+1.82

40-(2.51+0.52)62.6+(17.4+8.2)7.89-3.6-1.7

一、口算。

6.1-0.1=7.8-4=0.79+0.24=8.8-0.5=

7.4+0.2=6.6+3.9=0.61-0.35=5.1-0.8=

5-0.6=7.4-4.6=0.7+0.01=6.3-0.7=

3.6+0.4=8.5-4.5=0.76+0.21=1.3+0.9=

3.2-0.4=7.2-4=0.74+0.23=2.8+0.1=

5.1+0.9=8.3-3.9=0.84+0.44=5.8-0.7=

5.4-0.3=6.1-2.4=0.83+0.09=7.8+0.4=

5-0.2=8.3+1.5=0.88+0.06=2.4-0.7=

二、混合运算。

0.64-0.23+5.97.7-0.74-4.2678.8+15.9+31

72.09+48.12+86.6374.18-10.73+28.748.55+2.78+5.12

80-(7.05-0.67)97.2-(28+5.4)9.84+1.85+7.43

一、口算。

6.6+0.2=7.2-1.6=0.86-0.41=6.1-0.5=

3.1+0.4=8.5-3.7=0.84+0.27=7.5-0.2=

5.2-0.8=6.4+0.4=0.72-0.09=2.6+0.4=

1.9+0.3=8.2-3=0.6+0.26=8.3-0.7=

5.2+0.1=6.4+4.7=0.86-0.44=2.8-0.2=

7.4-0.8=6.4-1.8=0.68+0.4=1.6+0.3=

7.1+0.4=6.9-1.3=0.61+0.06=3.6-0.8=

1.4+0.4=6.3-0.4=0.6-0.35=8.6-0.9=

二、混合运算。

0.82+0.2+9.77.1-0.2-0.860.7-41.9+13.6

63.74+16.18+89.1788.83+16.64+30.058.01-1.79+5.08

50-(3.42-0.75)90.2+(26.5+3.1)6.98-3.33-1.15

一、口算。

6.9-0.1=6.3+4.3=0.66-0.13=1.4-0.3=

8-0.7=6.2-3.3=0.66+0.44=1.4+0.1=

5.7-0.9=7.9+3.7=0.9+0.37=5.2+0.8=

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