人教版四年级数学下册小数加减法混合运算专项练习题156.docx

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人教版四年级数学下册小数加减法混合运算专项练习题156.docx

人教版四年级数学下册小数加减法混合运算专项练习题156

一、口算。

7.3-0.6=6.9+3.2=0.85+0.38=3.1-0.6=

5.3-0.7=8-0.1=0.65-0.32=3.9-0.5=

8.3-0.2=7-0.6=0.6-0.3=4.9-0.3=

2.1+0.7=6.5+1.8=0.85+0.34=6.6+0.8=

3.8-0.9=6.1+4.9=0.85+0.1=8-0.1=

1.7+0.9=8.9-4.1=0.61+0.42=4.2+0.6=

1.7-0.3=7.7+0.2=0.7-0.15=4.6+0.2=

5.3+0.7=6.2+4.6=0.88-0.09=8-0.7=

二、混合运算。

0.69-0.48+7.15.4-0.8-1.297.6-40.5+20.9

70.23-12.31+79.1761.26-28.71+45.147.82-2.97-4.15

60-(1.63+0.63)69.8+(29.2+2.1)4.2-1.99+1.21

一、口算。

7.5+0.9=7.8-3.1=0.81-0.1=7.1-0.4=

4+0.1=7+2.3=0.74+0.14=7+0.8=

5.6-0.8=7-2.5=0.86-0.28=8.9-0.3=

1.9-0.8=8.6-0.5=0.69+0.24=1.5+0.2=

3.4+0.3=7.8-0.3=0.84-0.1=8.4-0.2=

9+0.2=8.4+0.6=0.64-0.33=4.5-0.3=

5.1+0.1=8.5+4.9=0.79+0.25=7.2-0.5=

7.2-0.6=6.5-2.5=0.77-0.09=6.6-0.2=

二、混合运算。

0.7+0.28+3.45.2-0.25-4.7579+31-28.3

68.86+29.78+31.5585.65-29.02+80.419.84+6.6+1.94

40-(4.2-0.25)85.3-(22.2+4.2)9.36-7.05-1.8

一、口算。

5.8-0.3=7.8-2.8=0.74+0.01=5.8+0.8=

7-0.2=6.4+1=0.81-0.08=9+0.3=

7.9-0.8=6.1+3.1=0.79-0.34=8.4+0.9=

9-0.5=8.7-4.2=0.9+0.23=7.4-0.5=

8.9+0.2=8.5-4.9=0.71+0.07=4.4-0.4=

3.9-0.5=6.5-3.5=0.83-0.38=2.1-0.7=

3.1+0.9=6.6-2.5=0.69+0.36=7.1+0.8=

5.9-0.3=8+1.2=0.72+0.04=5.2+0.4=

二、混合运算。

0.9-0.46+6.48.5-0.18-1.8298.3+32-17.6

60.27+42.83+97.7681.78-10.67+99.319.33-4.43+2.47

30-(1.89-0.58)83.7-(26.6+2.5)8.6+4.43+1.78

一、口算。

8.4-0.7=8.6+4.1=0.78-0.04=5.8-0.2=

1.1-0.7=6.7-2.3=0.82-0.4=5.9+0.1=

6.2-0.4=7.3-3.1=0.66-0.08=8.6+0.7=

1.8-0.6=7.2-4.5=0.86-0.33=5-0.2=

8.6-0.8=6.8-4.3=0.8+0.06=4.3+0.9=

8.4-0.4=7.7-1.6=0.7-0.32=1.9-0.3=

7.6-0.5=7.2-0.1=0.81-0.25=1.1+0.1=

8.9-0.6=6.3-1.4=0.66+0.26=7.2-0.9=

二、混合运算。

0.82-0.36+6.75.5-0.25-4.7598.8-52.8-33.9

82.91-34.87+33.8186.98+15.99+64.14.74+3.22+1.08

70-(9.95-0.53)65.2+(23.5-4.2)7.23+2.43+3.92

一、口算。

8.1-0.1=8.1-4.5=0.63+0.43=8-0.5=

7.4-0.3=6.6-1.3=0.79+0.37=2.5+0.9=

6-0.1=7.5+3.5=0.71-0.28=1.3+0.2=

7.6-0.4=7.6+0.6=0.62-0.25=2.9+0.1=

6.8+0.9=8.3+2.5=0.88-0.12=7.8+0.9=

4.4+0.9=8.5+2.3=0.79-0.3=8.6+0.2=

2.2-0.9=6.2-3.3=0.85-0.38=6.2+0.6=

2.3-0.5=7.1-4.5=0.76-0.35=1.4-0.5=

二、混合运算。

0.65-0.44+0.95.7-0.55-4.4590.7-35.8-51.2

73.53+21.6+81.5267.3-31.38+41.114.41-2.07+1.84

30-(2.64-0.29)61.1-(23.8+6.6)9.43-2.04+5.94

一、口算。

6.4+0.2=6.1+2.5=0.89+0.3=1+0.2=

6.6+0.4=6.5-3.1=0.71+0.23=1.8-0.7=

5.8+0.2=8.8-1.1=0.79+0.3=3.6+0.1=

2.5-0.6=6.4+4.8=0.9-0.45=9-0.3=

8.2+0.8=7.9+1=0.71+0.41=4+0.9=

3.8-0.4=6.7+3.2=0.65+0.49=7.5-0.3=

3.4+0.8=7.8-1=0.73+0.05=3+0.9=

4.6-0.6=8.9+0.6=0.63-0.4=5.8-0.9=

二、混合运算。

0.66-0.15+3.19.4-0.43-1.5748.8+12.1+28.4

68.19-40.73+13.3487.7+23.45+35.788.12+4.33+2.03

80-(3.53-0.45)67.5+(26.3-2.5)4.1-2.43-1.16

一、口算。

8.4+0.9=7.4+2.3=0.86-0.04=8.5-0.5=

4.3+0.3=6.9+3.9=0.89+0.38=7-0.4=

3.4+0.1=8.9-1.9=0.89-0.04=5.2-0.2=

6.9-0.9=8-2.5=0.9+0.15=1-0.6=

7.3+0.1=6.6-0.6=0.71-0.09=4.6+0.6=

9-0.8=6.5-3.5=0.9-0.32=6.5+0.1=

6.9-0.3=6.8+3.8=0.79+0.06=5.2-0.7=

5.9-0.4=7.6-1.7=0.77+0.1=5.7+0.1=

二、混合运算。

0.6+0.12+8.76.1-0.86-2.1467.9+14-45.1

67.11+13.85+60.9676.39-44.4+14.238.52+5.98-1.83

70-(4.31-0.93)62.6-(11.8+8.8)5.73+1.89-3.15

一、口算。

8.3-0.8=6.9+1.9=0.89-0.39=8.7+0.6=

4.8-0.1=6.3-4.6=0.88-0.13=8.9+0.3=

5.4+0.2=6.2-3.3=0.88+0.43=4.7+0.5=

6.3-0.5=8+2=0.7-0.07=9-0.5=

6.7+0.3=9+1.7=0.81-0.38=6.2-0.7=

2.8-0.7=8.8-3.1=0.77-0.04=1-0.4=

4.8-0.5=7.1-3.5=0.7+0.47=3.7-0.6=

1.8-0.1=7.9+0.9=0.78+0.44=1.7-0.5=

二、混合运算。

0.69+0.34+8.48-0.17-1.8363.9-45.1+10.7

78.73-25.21+56.5284.79+44.08+96.664.88+2.72+1.17

80-(9.63-0.75)94.3-(13.7-9.6)7.65+1.28+1.36

一、口算。

4.2+0.6=8.2-3=0.66+0.35=2.2+0.4=

3.9-0.8=8.9-3.1=0.84-0.39=2.2+0.5=

1.7-0.2=7.6-4.8=0.6-0.3=4.8-0.4=

7.6-0.7=7.5+3=0.77-0.42=4.1+0.4=

7.6+0.1=8.1-1.9=0.66+0.21=6.5-0.6=

6.7-0.2=6.8-3.3=0.6-0.14=2.9-0.6=

7.4+0.1=7.2-2=0.81-0.09=7.2+0.8=

1.9-0.2=7.4-3.3=0.71-0.13=8.5+0.2=

二、混合运算。

0.71+0.4+0.17.4-0.48-0.5285.1-47.1-30.1

79.84-39.38+35.0581.36+26.55+95.448.9-6.68-1.77

30-(4.81-0.22)63.1+(29+7)4.22+1.31-2.76

一、口算。

4.2-0.9=8.3-0.5=0.69-0.32=3-0.3=

6.3-0.3=6.1-1=0.81-0.42=4.6-0.1=

2.9-0.5=8.9-2.1=0.82-0.15=4.8-0.2=

1.3+0.3=8.8-3.4=0.84-0.26=7.3+0.2=

2-0.1=6.6+0.7=0.85+0.1=4.7+0.2=

8.9-0.4=8.7-1=0.69-0.26=2-0.3=

2-0.6=6.2+1.6=0.67-0.06=3.8-0.5=

7.3+0.4=7.6-0.3=0.87+0.39=2.7-0.3=

二、混合运算。

0.89-0.34+8.75.3-0.15-4.8538.8-16.4+12.4

69.77+29.57+29.8677.07-44.3+86.516.02-3-2.27

50-(2.72-0.18)60.1-(12.1-1.8)7.1-3.72-2.3

一、口算。

5.2+0.1=6.4-0.7=0.66-0.3=1.2+0.3=

3.5-0.5=8.3+1=0.68-0.25=4-0.4=

2.8+0.3=8.5-4.4=0.89-0.48=8+0.3=

3.1+0.2=6.7-0.7=0.78-0.02=2.2+0.6=

8.8+0.2=7.2+2.4=0.62-0.37=6.4-0.9=

6.4-0.1=8.4+1.9=0.71+0.46=1.6-0.8=

1.1+0.3=8.3+3.8=0.85-0.03=8+0.9=

7.1+0.9=6.2-4.1=0.6-0.46=6.2+0.6=

二、混合运算。

0.62-0.18+2.86.2-0.85-0.1536.9+21.7+11

78.59+14.98+35.0980.62-36.44+47.678.65+5.89-2.34

80-(3.44+0.13)72.5-(12.1+9.3)5.84-2.52-3.22

一、口算。

5.4+0.4=6.8-2.6=0.7+0.11=5.9-0.8=

8.3+0.8=8-0.2=0.64-0.45=7.9-0.4=

7.1+0.5=8.6-4.7=0.84-0.48=8.9+0.6=

6+0.4=8.6+1.9=0.86-0.18=5.1-0.9=

8.1-0.8=6.7-4.7=0.88-0.2=6.6+0.9=

4.6-0.9=8.5-3.8=0.75-0.08=6.5-0.6=

8.1-0.6=7.8+1.8=0.63-0.42=2.8+0.7=

8.7-0.8=7.6+4.1=0.88+0.27=4.3+0.2=

二、混合运算。

0.87+0.46+9.98-0.36-1.6448.5-30.4+17.8

70.37-37.02+66.2262.18+22.28+71.498.99-2.08+6.48

50-(5.22+0.17)75.5-(11.8+3.4)9.48+2.75+1.13

一、口算。

4.3+0.9=6.1-2.4=0.65+0.03=6.4-0.8=

5.5+0.1=8.8+1.2=0.68+0.31=5.2+0.9=

1.2+0.6=7.6-1.6=0.65-0.35=5+0.6=

8.5+0.4=7.5-1.5=0.67-0.23=5.7+0.7=

5.3+0.9=8.4-0.5=0.71-0.04=1.2-0.6=

3.1-0.3=7.1-3.1=0.82-0.07=2.8-0.1=

3.6-0.8=6.9-2.9=0.73-0.16=2.5-0.3=

2.5-0.4=6.6-3.8=0.88-0.19=8.6+0.3=

二、混合运算。

0.83+0.43+5.37.9-0.82-0.1847.4+16.2+16.3

66.62+29.32+29.9860.67-45.49+84.976.61-1.55-4.22

50-(4.15+0.25)96.4+(11.2-6.3)6.33-2.93+3.18

一、口算。

6.7+0.5=8.2+4.3=0.74-0.44=4.7+0.7=

3.7+0.5=8.2+1.2=0.88+0.42=3.2-0.4=

6.7-0.6=8.2+4.4=0.66-0.17=3.9-0.4=

5-0.3=6.7-2.9=0.8-0.22=1.4+0.6=

2.1-0.8=6.7-2.1=0.6+0.38=4.3-0.8=

7.3-0.7=8.2-1.3=0.74-0.35=4.7+0.9=

6.3-0.8=6.8+4.4=0.62-0.22=5.8-0.5=

5.3-0.6=9-2.1=0.74+0.39=2.2-0.2=

二、混合运算。

0.89+0.49+9.68.3-0.5-4.592.9-25.1+59

60.81+16.68+93.0374.76+24.29+46.959.1-1.88-3.65

60-(1.64+0.71)76.7-(19.2+9.1)6.52+2.76-3.24

一、口算。

7.1+0.8=7.1-1.3=0.7-0.4=8.3-0.7=

7.3-0.5=7+0.3=0.6-0.19=7.6+0.5=

1.6+0.2=6.9+4.9=0.63+0.34=1.5-0.1=

4.5-0.2=7.6+0.4=0.9+0.27=3.9-0.7=

1.2+0.8=6.4-1.7=0.82-0.24=6.3-0.5=

2.1+0.5=7.6+2.3=0.77-0.29=8.3-0.3=

3.9+0.3=6.7+3.8=0.77-0.18=2.6-0.6=

8.1-0.1=8+4.8=0.6-0.08=8.6-0.9=

二、混合运算。

0.72-0.32+5.38.9-0.67-3.3351.8+27.2+23.8

67.73-36.5+24.2273.71-33.16+14.464.83+2.32+1.18

50-(6.94-0.1)88.6+(17.8-2.8)8.76-2.05+2.06

一、口算。

1.7-0.3=6.3-4.7=0.89-0.35=8.4+0.7=

6.5+0.5=7.6+3.4=0.84-0.1=4.3-0.3=

1.4+0.6=6.8-0.5=0.84+0.03=3.9-0.3=

3.7+0.1=6.6-2.9=0.84-0.26=1.8-0.7=

7.4-0.8=8.1+3.2=0.79+0.25=6+0.4=

2.9+0.2=6.2-3.3=0.82-0.15=5.2-0.2=

6.8-0.4=8.9-0.2=0.7+0.03=8.2+0.6=

5.6-0.8=6.9-1.4=0.78+0.32=3.6+0.4=

二、混合运算。

0.85-0.38+8.28.8-0.71-4.2978.4+11.3+48.3

88.13-38.72+38.777.28-42.38+17.99.26+1.64-4.37

60-(4.81-0.41)68.7-(15+6.9)7.44-5.25+1.85

一、口算。

4.1-0.2=6.8+0.3=0.74+0.44=6.7+0.7=

3.7+0.8=6.6-2.5=0.84+0.42=2.7+0.9=

6.2-0.7=6.9+2.9=0.79-0.04=3.2+0.5=

8.8+0.5=6.9+1.9=0.69+0.21=7.1-0.3=

8.9+0.1=6.6+3.5=0.67-0.25=7.1-0.5=

8.3-0.2=8.6+4.6=0.84+0.23=3.8-0.4=

3.6+0.2=8.5+4.2=0.69-0.21=5.5-0.4=

2.1-0.9=6-3.6=0.71+0.42=1.8+0.7=

二、混合运算。

0.85+0.28+2.55.4-0.2-2.885.8-59+25

71.66-34.89+21.2277.03+39.96+68.994.94-3.33-1.31

20-(6.09-0.66)88.2-(27.3-5.4)8.85+2.01-5.95

一、口算。

3.5+0.9=6.5+0.1=0.86+0.21=9-0.3=

3.5-0.3=6.9-3.4=0.74-0.06=1.8+0.3=

5.8+0.6=7.3-1.2=0.

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