人教版四年级数学下册小数加减法混合运算专项练习题162.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162
一、口算。
4.2-0.2=6.3-0.7=0.78-0.15=3.5-0.8=
4.6+0.3=9-4.5=0.78+0.06=4.9+0.8=
4.9-0.3=6.2+4.8=0.62+0.08=4.9-0.3=
2.6+0.4=8+1.4=0.78-0.48=5.7+0.4=
4.7+0.2=7.9-4.3=0.71+0.21=3.1+0.9=
5.5+0.4=8.1+4.9=0.68-0.02=7.9-0.3=
7.8+0.1=7.9-2.3=0.88-0.23=5.7-0.1=
2.2+0.6=8.3+3.2=0.64+0.08=5-0.6=
二、混合运算。
0.88-0.14+26.9-0.74-3.2694.9-52.3-38
69.84+45.09+11.0266.47-40.06+99.047.22+1.59-4.72
30-(8.3+0.1)93.5-(27.6-8.7)5.88-3.39+1.54
一、口算。
6.2-0.5=7.7+1.2=0.63+0.32=3.1+0.1=
5.6-0.9=7.3-0.4=0.76+0.15=5.9+0.3=
6.8-0.1=7.1-1=0.63+0.41=3.6+0.8=
6.8+0.1=7.9-2.2=0.65+0.13=4.7-0.4=
4.8-0.2=6.4-2.1=0.88-0.23=7.5+0.7=
7.9-0.3=8.6-1.8=0.66+0.06=5.8+0.6=
7.7-0.5=8.6+4.3=0.88-0.29=4.8+0.6=
5.6+0.5=8+2.6=0.72+0.46=8.5+0.6=
二、混合运算。
0.81-0.4+4.46.5-0.63-4.3771.5-40.1-24.1
75.42-18.69+86.2474.38+15.93+25.076.12-1.5-2.52
70-(2.02+0.71)85.5-(20.4-4.2)7.77-2.97+1.37
一、口算。
2.7+0.8=7.8+0.7=0.83+0.29=2.8+0.7=
8.5+0.9=8+3.9=0.9+0.43=6+0.3=
1.1-0.6=6.6+2.6=0.64+0.41=7.9+0.6=
4.7-0.7=8.7+3.2=0.88+0.21=3.1+0.3=
6.2+0.9=7.2+2.6=0.77-0.2=1.8+0.9=
3+0.7=6.4+1.3=0.75+0.46=6.2-0.6=
2.3+0.9=7.2+3.7=0.6+0.18=4-0.6=
3.9+0.5=8.5+1.2=0.81-0.08=5.5-0.7=
二、混合运算。
0.73-0.26+2.87.8-0.88-0.1278.8-40.6+18.2
64.32+31.68+30.8369.27-13.47+31.379.86-3.18-2.38
70-(5.08+0.32)60.2+(20.2+3)7.01+3.35-2.47
一、口算。
7+0.1=8.9+1.2=0.66-0.22=5.3-0.1=
1.8+0.7=7.7+2.3=0.73-0.37=1.6-0.1=
4.8-0.5=7.9-4.8=0.76-0.09=8.7-0.3=
6.9+0.8=6.8+2.3=0.75+0.46=8.4-0.7=
3.6+0.3=6.4-1.2=0.87+0.13=7.1-0.6=
8.8-0.2=7.9+1.5=0.84+0.28=4.5-0.8=
3.6-0.9=7.3+2.2=0.78+0.16=3.7+0.4=
5.9-0.9=7.3+4.8=0.72-0.49=7.6-0.3=
二、混合运算。
0.67+0.03+0.78.9-0.52-3.4841.9-13.5-15.7
75.49+44.16+53.5377.36+27.6+18.468.61+6.09-1.57
60-(9.9-0.14)88.7-(15+9.7)5.24+1.36-1.18
一、口算。
6.8+0.9=8.2-4.8=0.79-0.45=7.5+0.6=
5.7-0.5=8+2=0.81+0.21=1.9+0.3=
7.6-0.6=8.8+0.1=0.65-0.08=1.7+0.8=
8.8+0.2=7.4-2.3=0.62+0.21=1.1+0.7=
1.6-0.9=6.5+0.5=0.68+0.03=7.6-0.2=
1.7+0.7=7.2+4.8=0.8-0.15=1.4+0.7=
7.2+0.6=9-0.6=0.87+0.23=3+0.5=
1.6-0.3=6+2.1=0.73+0.36=8.8-0.7=
二、混合运算。
0.61-0.05+9.97.5-0.74-3.2671.7+26.5+14.2
83.16-35.31+99.6180.87-27.58+13.437.47-1.2-2.38
30-(4.36-0.24)75.6-(11.4-1.8)4.06-1.3+1.07
一、口算。
7-0.7=9+4.2=0.65-0.4=2.9-0.5=
6.2-0.6=6.1-3.7=0.88-0.08=1.4-0.2=
8.2-0.6=7.1-2.5=0.63+0.34=4.1+0.5=
6.1-0.8=6.4-0.2=0.61-0.43=1-0.4=
1.5-0.7=8.8+1.4=0.64+0.08=3+0.1=
3.7-0.9=6.6-1.1=0.73+0.06=5.2-0.8=
1.1-0.1=7-0.4=0.7+0.08=6.5-0.1=
8.3+0.6=8.7+4.5=0.63-0.12=6.6+0.8=
二、混合运算。
0.71-0.27+4.16.9-0.23-2.7763.9+35.5-11.6
68.5+18.28+84.1568.39+19.37+30.817.71-4.2-1.25
30-(1.59+0.36)96.5-(11.6-7.5)9.6+7.59+1.1
一、口算。
6.9+0.2=8+3.6=0.65-0.2=4.3-0.5=
4.3+0.8=6.6+3=0.9-0.06=7.5-0.7=
1.1+0.6=9+3.9=0.65+0.28=1.7+0.3=
4+0.7=6.2+1.1=0.66+0.44=6.7+0.3=
4+0.8=7-3=0.83-0.09=5.4+0.4=
1-0.8=8.4-0.5=0.82-0.49=8+0.2=
2.5-0.4=7.9+4.2=0.8-0.23=4+0.1=
1.9-0.2=8.5+3.3=0.79+0.11=2.5+0.2=
二、混合运算。
0.72+0.3+47-0.45-0.5593.4+73.7+15.8
62.47+28.88+38.6161.82+41.87+65.738.23+1.99-5.89
50-(3.62+0.46)61.6-(18.4-5.1)8.61+2.06+2.34
一、口算。
2.9-0.4=6.1-0.9=0.89+0.35=4.9+0.7=
8.5-0.6=8.1+2.4=0.81+0.28=1.8-0.3=
2.1-0.9=6.9+3.2=0.88+0.3=5.7+0.3=
7.7-0.7=8.1+3=0.64-0.03=6.6+0.5=
4.5-0.5=7.6+2.4=0.78+0.31=6.7+0.8=
1.1-0.6=6-4.3=0.73-0.13=5.5+0.9=
1.5+0.1=7.1+0.3=0.89+0.33=7.9+0.4=
3.4-0.2=6+4.1=0.7-0.27=7.3-0.8=
二、混合运算。
0.69-0.23+2.57.2-0.71-1.2965.3+45+16.7
82.27-15.28+68.7277.08-16.1+92.368.67+2.25+3.43
20-(7.56-0.58)96.4-(25.3-3.4)5.46+1.24-1.14
一、口算。
1.5-0.6=6.4+4.1=0.68-0.21=7.9+0.7=
8.7+0.9=7.1+2=0.72-0.22=7.3-0.3=
4.3+0.3=6-4.7=0.67-0.37=4.8-0.8=
5.6-0.1=8.4-2.4=0.87-0.42=8.4-0.4=
1.1-0.6=6.3-0.9=0.79-0.28=3.3-0.4=
3.4-0.9=6.7-3.4=0.88+0.12=6.1-0.1=
2.6+0.9=6.8-1=0.76+0.15=5-0.9=
7.2-0.8=7.7-4.6=0.74-0.49=7.7+0.5=
二、混合运算。
0.68-0.28+9.58.3-0.85-3.1557.8-28-21.4
70.97+39.74+41.9577.82-35.93+10.745.49-1.63-2.01
40-(9.79+0.42)74.5-(29.7-7.6)7.69+3.79+2.97
一、口算。
4.5+0.9=8.3+4=0.67+0.42=1+0.1=
2.7+0.7=6.9+2.1=0.61-0.25=1.6+0.4=
6-0.6=6.1+3.8=0.86-0.48=6.3+0.7=
7.9+0.1=7.5+4.9=0.68-0.13=5.5-0.6=
5.5+0.2=8.7+1.2=0.84+0.49=1.5+0.3=
6.4-0.5=7.1+0.9=0.6-0.38=1.3-0.3=
6.8-0.4=7.6-2.9=0.78+0.39=3.7+0.9=
3.6-0.4=6.8-2.7=0.84-0.42=2.8-0.7=
二、混合运算。
0.61+0.15+6.77.8-0.6-4.493.1-51.1-21.9
82.26+36.99+18.287.78-12.26+80.667.38+2.78+2.45
80-(5.19-0.37)89.7+(23.8+4.8)5.44-1.14-2.34
一、口算。
2.7-0.6=8.4-1.5=0.75+0.2=1.7-0.8=
1.6+0.1=8.8-2.4=0.62+0.06=6.5-0.9=
2.1+0.4=7.9+0.8=0.83-0.33=7.8+0.9=
2.9+0.3=8.3-0.8=0.78+0.21=2.8-0.6=
5.2+0.9=8+3.9=0.68+0.06=2.2-0.7=
5.7-0.1=7.1-3.9=0.89+0.35=4.4-0.8=
9+0.5=9-0.4=0.77+0.09=4.9-0.7=
3.2+0.1=8.9-3.7=0.87+0.07=6.5-0.3=
二、混合运算。
0.8-0.08+9.85.7-0.61-4.3988.7-37.2-49.9
76.36-18.11+21.4588.38+43.79+94.018.38-3.81-3.05
30-(8.63-0.9)82.7-(16.2-2.5)8.42+2.68-5.32
一、口算。
1.7+0.6=9-4.3=0.74-0.31=7-0.1=
7.4-0.9=6.4-2=0.72-0.26=7.4-0.7=
1.2+0.4=7.2+4.6=0.65-0.42=4.1-0.7=
4.6-0.4=8.5-3.4=0.78-0.15=6.9+0.6=
3.7-0.2=8.8+4.4=0.61-0.1=2.1+0.4=
6.9+0.8=8.1-4=0.67-0.14=4.8-0.2=
5.8+0.4=7.4+0.7=0.62-0.01=3.4-0.3=
3.1-0.7=8.6+1.7=0.79-0.26=8.7+0.2=
二、混合运算。
0.62+0.04+6.89.2-0.51-2.4977.4-48.7+23.9
67.92-23.95+86.9378.05-26.29+16.676.25-3.3+2.65
70-(8.41-0.56)93.8-(22.4+8.9)4.35+1.11-1.88
一、口算。
4.7+0.8=8.9-1.2=0.72-0.49=8.2+0.6=
5.9-0.3=6.3-3.2=0.9+0.22=2.2-0.6=
5.7-0.1=7.1+0.7=0.84-0.18=2.6+0.2=
8.5+0.8=6.1-3.2=0.74+0.27=7.3-0.4=
4.4-0.7=7.4-1.6=0.76-0.18=2.9+0.3=
5.4-0.5=7.8-3.6=0.9-0.32=4-0.5=
6.5+0.4=6.6+0.3=0.7+0.19=3.4-0.8=
2.1-0.3=7.2+3.3=0.83-0.04=8.4-0.1=
二、混合运算。
0.85+0.13+6.17.8-0.78-0.2288.7-18.6-67.3
68.27+23.64+28.5987.19-21.58+32.859.84+4.23+3.24
40-(7.45+0.72)69+(16.5+7.6)8.37+2.06-4.45
一、口算。
7.7-0.9=7.8+0.9=0.62-0.12=6.8-0.1=
1.6+0.6=6.3-3.3=0.71+0.25=3.2+0.4=
8.5+0.1=6.1-1.7=0.61-0.06=3.9+0.8=
6.2+0.9=8.1-4.8=0.61+0.49=5.4+0.6=
8.1+0.7=8.5+4.5=0.78-0.42=6.2-0.9=
3.4+0.9=6.4+3.4=0.78-0.4=2.7-0.1=
6-0.4=6.1-3.5=0.88+0.41=8.6+0.1=
4.9+0.8=8.8-4.9=0.67-0.49=2.3-0.8=
二、混合运算。
0.7-0.48+37.2-0.48-1.5289.7+30.8+47.2
84.75+27.38+44.4287.28-31.31+12.659.38+4.74-3.67
30-(7.42+0.91)79.5-(15.6-1.8)6.91+5.32-1.39
一、口算。
7.8-0.5=8.6-0.7=0.73-0.44=5.7+0.3=
5.5+0.3=6.2+1.5=0.73-0.07=1.7-0.7=
5.3-0.6=6.2-1.3=0.62+0.13=4.9-0.3=
8.2+0.2=7.5-1=0.61-0.32=3.2+0.6=
6.7+0.9=7.4+2.7=0.64+0.47=8.1-0.6=
1+0.5=7.8-1.7=0.87+0.12=2.1+0.7=
3.4-0.1=6.4+4.1=0.66+0.33=6.6+0.4=
8.1+0.7=6.9+4.8=0.65-0.14=6.3+0.4=
二、混合运算。
0.8-0.01+5.45.2-0.74-1.2699.4+10.4+43
80.08+44.84+86.868.65-18.45+79.466.55-1.15+4.78
60-(6.3-0.13)79.1-(25.4-6.3)8.21+6.4-1.26
一、口算。
8.6-0.9=7.4-4.4=0.77-0.09=6.5-0.5=
4-0.2=8.5+2.2=0.8-0.24=5.7-0.3=
6.3+0.5=7+1.8=0.71-0.06=4.2+0.8=
8.3-0.2=6-0.4=0.65+0.3=2.3-0.9=
3.8-0.9=6-3.5=0.72-0.45=4.8-0.2=
3.1+0.4=7.3-3.8=0.74-0.4=3.9+0.2=
8.7+0.3=6-0.3=0.85-0.16=8.3-0.2=
5.9+0.3=8.1-0.6=0.74+0.24=1.5+0.8=
二、混合运算。
0.69-0.04+5.16-0.34-0.6645.4-27.2-16.6
81.91+23.92+69.5889.59-46.35+62.139.05-3.98+2.33
30-(4.46+0.32)66.7+(24.2+7.6)3.65-1.43-1.07
一、口算。
6.2-0.4=8.8+4.1=0.86-0.26=4.2-0.1=
7.6-0.9=6.8+0.2=0.65-0.25=3.5+0.3=
4.1-0.7=6.5+2.9=0.84-0.41=6.2+0.3=
3.1+0.8=8.5+4.4=0.67+0.39=3.5+0.6=
1.6+0.6=7.8-4.3=0.61-0.15=7.5+0.6=
6.1-0.6=8.1-1.7=0.85+0.29=1.2+0.6=
4.1-0.9=7.8-4.7=0.87-0.45=7+0.8=
7.1-0.4=7.2-2.4=0.71-0.01=4.1+0.8=
二、混合运算。
0.87+0.42+75.8-0.12-0.8864.6-45+19.5
71.78-22.22+70.7665.21-47.33+72.364.18+1.78+1.55
50-(8.79-0.93)66.9+(19.8-7)8.52-6.52-1.84
一、口算。
3.8-0.4=7.6-4.3=0.68+0.48=7.4-0.2=
7.7-0.6=7.4-2.9=0.62-0.05=7.4-0.7=
6+0.5=