人教版四年级数学下册小数混合运算综合练习题9.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9.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9
一、口算。
7-0.2=7.5-4.5=0.63+0.12=1.9+0.7=
4.3+0.6=8.7+0.3=0.82+0.07=4+0.2=
9-0.1=6.5-2.3=0.71+0.3=2.3-0.7=
3.8+0.9=8.4+2.7=0.84-0.13=2.9+0.7=
8.2-0.4=7.8-2.3=0.8+0.49=1.8-0.4=
7.1+0.8=9+1.3=0.86+0.34=8.2+0.3=
6.7-0.6=7-1.6=0.84-0.01=7.2+0.8=
3.1-0.8=9+4.8=0.87+0.1=2.5+0.2=
二、混合运算。
0.88-0.08+4.99.5-0.43-0.5758.5-11.3-22.2
77.16+22.29+55.1182.97-16.43+57.378.71-4.28-2.67
40-(8.29-0.4)73.1-(15.3-6)5.15+2.5+2.56
一、口算。
3.9+0.3=7.5-0.6=0.79-0.06=1.7-0.4=
8.5-0.2=8.4+0.6=0.66-0.05=3.7+0.9=
6.4-0.7=6.2+2.6=0.73+0.32=8.7-0.6=
7-0.4=6.2-3.2=0.74-0.1=2.7-0.3=
3.9-0.2=6.8-3.3=0.69+0.33=7.3+0.4=
7.2-0.3=6.3-1=0.66+0.32=8.9+0.3=
9+0.6=7.8-1=0.79+0.42=8.1-0.4=
3.5+0.6=6.8-4.6=0.78+0.32=1.1+0.8=
二、混合运算。
0.62+0.41+7.26.4-0.71-4.2947-13.1+21.7
81.2-14.57+17.1276.82+40.01+69.177.39+1.62+4
60-(1.75-0.84)99.7-(11.6+1.3)9.05+4.87+2.12
一、口算。
7.3-0.7=6.3+1.5=0.88+0.18=4.2+0.7=
6.6-0.9=8.5+2.9=0.89-0.31=4.3+0.2=
4.1-0.2=7.5-4.1=0.9+0.28=8.3+0.5=
2.5+0.2=6-3.7=0.72+0.08=4.3-0.4=
8.4+0.4=7.6+0.3=0.67-0.41=3.8+0.2=
9-0.7=8.3+3.6=0.76-0.3=5.5-0.9=
6.4-0.9=7.1-4.9=0.77+0.33=1.7-0.7=
2.7-0.4=6.3+3.7=0.86-0.26=6.9-0.9=
二、混合运算。
0.77-0.4+2.48.2-0.78-3.2296.9+21-55.7
71.1+32.42+77.4588.97+19.11+76.687.91-1.78-4.77
60-(4.67-0.63)89.6+(24.3-5)3.81+1.35+1.54
一、口算。
4.2+0.3=9-3.2=0.68+0.4=5.8-0.9=
8.7+0.5=7.2+3.8=0.84+0.37=6.7-0.7=
7.6+0.3=9-0.4=0.67+0.43=8.8+0.4=
6.5-0.1=7.7-1.2=0.75+0.1=4.3-0.7=
7-0.7=6.5+2=0.68+0.25=4+0.2=
2.5-0.9=6.8-1.6=0.73+0.49=1.4-0.8=
8.1+0.1=8.8+0.8=0.77+0.43=7.6-0.5=
3.8+0.4=8.3-1.7=0.78+0.31=4.8-0.2=
二、混合运算。
0.6-0.18+2.78.1-0.78-0.2252.7+32.5+11.5
87.63+13.55+42.4281.14-35.41+58.479.03-6.61-1
20-(9.03-0.58)66.6-(21+2.9)7.34-5.73+1.4
一、口算。
3.7-0.4=6.3+3.7=0.68-0.15=6.9-0.5=
3.1-0.3=8.3+1.4=0.71+0.03=2.7-0.3=
7.2-0.6=6.2-3.7=0.84-0.42=1.1-0.6=
6.3+0.7=6.2+4.1=0.84-0.07=6.5+0.2=
6.5+0.8=6.8-2.2=0.8-0.18=2.8-0.7=
4+0.1=8.4+1.1=0.9-0.01=4.8+0.7=
8.6+0.2=7+3.8=0.81+0.41=4.5-0.1=
8.9+0.4=7.3+0.6=0.78+0.23=6.4-0.6=
二、混合运算。
0.88+0.09+2.29.3-0.28-2.7281.4-41.4-37.2
86.4-17.81+57.8583.65-20.31+37.726.87+4.39+1.11
90-(6.96-0.25)87.6-(13.1-7.7)7.82+2.39-1.54
一、口算。
3.1-0.7=8.9-1.9=0.85-0.15=5.9-0.5=
6.5-0.2=6.3-2.3=0.62+0.44=1.6-0.3=
1.1-0.8=7.7+1.1=0.89-0.05=3.9+0.4=
2.6-0.5=6.5-2.3=0.77+0.34=7.2-0.9=
6.6-0.6=6.7+2.6=0.65-0.1=8.9+0.9=
3-0.4=8.6+4.6=0.84-0.13=7.4+0.1=
7.1+0.4=8.9+2.3=0.7+0.46=2.8-0.3=
8.3+0.6=6.7+2.4=0.85+0.28=6.9+0.3=
二、混合运算。
0.79+0.12+8.25.4-0.65-3.3542.4+13.2-19.1
72.24+47.33+91.3776.99+17.71+52.26.06+2.09-2.15
80-(2.25+0.77)73.1+(17.4+5.1)5.1-2.76-2.13
一、口算。
6.6+0.4=7+2=0.78-0.36=3.1+0.7=
4+0.3=6-3.3=0.65-0.04=8.8-0.2=
7.7-0.2=7.9-1.7=0.63+0.31=9+0.5=
7.9-0.8=7.3-3=0.72-0.35=4.4+0.2=
8.8+0.5=7.9+3.1=0.69-0.44=1.7-0.3=
7.6+0.6=6.3-0.2=0.65-0.43=5.6-0.7=
4.8-0.3=7.2+0.9=0.89+0.11=6+0.1=
8.5-0.5=8.1+0.4=0.68+0.35=8.3+0.1=
二、混合运算。
0.78+0.27+6.65.8-0.31-1.6938.9+11.8+22.6
89.23+30.48+31.279.78-36.93+48.734.62+2.39-1.24
30-(6.57-0.13)76.3-(13.4+8.4)5.05+3.34+1.67
一、口算。
3.8+0.9=6.5+2.5=0.76+0.16=5.7+0.3=
2.3-0.1=6.2-4.2=0.9-0.38=3.3-0.6=
7.8+0.9=8.3+1.2=0.82+0.34=1.8-0.2=
8.4-0.8=6.2-4.4=0.78-0.19=8.8-0.8=
6.4+0.9=6.5+1.2=0.7+0.36=3.1+0.7=
4.6-0.7=7.7-0.7=0.65-0.01=6+0.7=
2.8-0.3=7.2-4.4=0.6+0.12=4.3-0.1=
2.8+0.2=6.6-2.4=0.9+0.09=6.6+0.1=
二、混合运算。
0.84-0.23+4.17.9-0.11-3.8979.2-55.7-12.3
66.34-23.2+72.9978.73+20.31+26.333.82+1.83+1.25
20-(6.59+0.9)67.1-(23.2-1.8)6.13+4.53-1.32
一、口算。
1.7+0.5=6.9+3.4=0.74-0.08=1-0.8=
3.5+0.2=7.9-4=0.88-0.12=6.9-0.6=
3.1-0.3=6.4-2.7=0.73+0.24=2.6-0.3=
1.1+0.5=8.4-0.3=0.87-0.18=7.2+0.1=
2+0.3=8.6-3.9=0.67-0.46=3.1+0.1=
7.5+0.1=8.4-4.4=0.63-0.41=5.1-0.8=
3.3+0.7=7.1-2.5=0.67-0.3=6.3+0.4=
2.5+0.2=7.9-3.8=0.66+0.19=2.1+0.5=
二、混合运算。
0.82-0.49+8.95.2-0.47-1.5358.9+38.7-19.6
83.82+30.78+77.7769.46-20.16+39.454.59+1.53+2.35
50-(1.27+0.4)80.1+(10-3.8)4.97-2.5+1.62
一、口算。
3.5+0.4=9+1.2=0.66-0.26=3.7+0.1=
3.6+0.4=7.3-2.2=0.73+0.27=2.7-0.5=
7.7+0.9=6.6-4.7=0.8+0.29=5.7+0.5=
2.6-0.8=8-4.6=0.76+0.12=4-0.8=
5.5-0.8=7+1.4=0.79+0.12=2.9+0.2=
4.3-0.5=7.6-4.9=0.66+0.45=6.6+0.7=
1.8-0.7=7.8+1.9=0.65+0.13=2.4+0.3=
5.1+0.1=8.2+0.5=0.76+0.17=8.8-0.5=
二、混合运算。
0.64-0.36+9.65.9-0.36-2.6455.3+24.4+16.3
60.19+37.95+35.3387.8+15.1+98.684.5+1.35+2.38
60-(2.33+0.87)85.6-(14.8+7.3)9.92+6.21+1.82
一、口算。
6.6-0.9=6.8-3.4=0.77+0.13=6.4-0.8=
7.2-0.1=6.4+3.5=0.69+0.21=3.6+0.2=
2.8+0.1=7.1-1.8=0.79+0.18=7.5+0.9=
3.2+0.7=7.3-2=0.79+0.27=7.9-0.6=
5.1-0.1=7.9+2.4=0.77-0.11=8.4-0.4=
1.4-0.8=8.8+0.6=0.85+0.37=9+0.8=
5.4+0.4=6.9-1.5=0.69-0.32=3.6+0.5=
8.8-0.8=8.6+2.4=0.67+0.34=1.8-0.7=
二、混合运算。
0.64+0.03+0.67.2-0.53-1.4795+68.4-17.2
70.81-19.01+87.7867.74-37.83+27.714.9-3.26+1.01
40-(2.82+0.62)71.8+(25.9+9.5)7.13-4.75-1.28
一、口算。
5.4-0.8=6.6-2.4=0.61-0.31=4.9+0.8=
6.6-0.7=7.2+1=0.88+0.17=1.9+0.8=
5.2-0.6=8.1+4=0.75-0.34=3.6-0.7=
1.6-0.8=6.7-1.9=0.61-0.18=4.9+0.9=
7.2+0.8=8.5+3.7=0.61+0.37=4.1-0.5=
7.6+0.9=6.3-4=0.68-0.01=2.8+0.3=
7.8+0.2=6.9-4.9=0.72+0.49=4.4+0.5=
8.2+0.1=6.3+4.2=0.65-0.28=6.3-0.9=
二、混合运算。
0.88-0.44+8.97.3-0.57-1.4386.1+31.8-19.1
89.2-30.61+31.5180.66-20.74+23.585.07-2.78+1.64
20-(1.25+0.13)65.6+(25.2-2.9)6.81+1.63-3.46
一、口算。
2.2-0.6=7.5+1.5=0.9+0.01=8.7-0.1=
5.7-0.5=6.3+0.2=0.63-0.05=4.2+0.9=
3.4-0.8=7.9-3.9=0.69+0.12=4.4-0.8=
8.5+0.8=8.1-1.4=0.81+0.37=1.2+0.5=
3.7-0.2=7.5+0.3=0.79-0.24=4+0.3=
4.8-0.1=6+0.4=0.83+0.14=9-0.6=
5.1-0.9=7.4+2.5=0.86+0.15=5.4-0.7=
5.5+0.6=7.3-3.4=0.68-0.2=5.1+0.8=
二、混合运算。
0.63+0.3+9.26.6-0.59-3.4156.7-30.6-25.2
88.13+41.98+92.9882.95-23.4+54.896.93-3.54+1.86
30-(1.05+0.2)74.2+(29.7-2.2)6.97+2.09+3.4
一、口算。
2.3+0.5=6.8+2.8=0.86+0.34=5-0.3=
1.7-0.1=6.5+3.7=0.84+0.23=6.6-0.7=
2+0.7=8.6-4.2=0.75-0.3=3.6-0.9=
2.5-0.6=8.6+2.6=0.82-0.44=1.9-0.6=
4.6-0.8=7.5+2.8=0.66-0.34=1.5-0.2=
7.6+0.5=6.7+1=0.81+0.33=7.5-0.6=
6.8+0.8=6.6+3.9=0.88+0.14=5.7-0.4=
7.9-0.8=8.2+3.7=0.9-0.11=7.8-0.5=
二、混合运算。
0.68+0.2+4.29.6-0.23-3.7779.6-20.1-45.3
67.04+46.51+35.3978.57-33.27+62.947.46+3.52-2.35
90-(7.89+0.95)76.9-(28.2-4.6)9.8+4.37+1.52
一、口算。
2.5+0.3=6.4+1.1=0.64+0.4=3.1-0.5=
1.4+0.4=8.3+0.7=0.81-0.14=2.2+0.3=
5.6+0.4=7.1+2.2=0.68-0.21=5.4+0.1=
8.7-0.9=8.9-4.8=0.72-0.17=1.1+0.7=
4.8-0.5=7.7-3.6=0.63+0.09=8.8-0.9=
3.1-0.4=6.8+3.5=0.69-0.49=3.5-0.7=
8.3-0.2=6.1+4.8=0.69-0.45=4.3-0.9=
1.5-0.4=7.3+1.5=0.66-0.07=7.9-0.9=
二、混合运算。
0.62+0.25+1.45.9-0.11-3.8940.6-10.1+12
84.57-10.16+16.2461.66+20.69+51.896.77+1.66+4.95
70-(8.19+0.99)79.5+(12.5+8.6)8.65+3.63+5
一、口算。
7.9+0.4=7.6-4.7=0.81+0.22=7.6-0.4=
7.9+0.2=6.1+2.9=0.68+0.13=4.3+0.2=
6.3-0.1=7.9-4.3=0.74+0.26=6.2-0.4=
5.8-0.1=8-3.9=0.78-0.31=8-0.7=
4.8+0.4=6.2+4.8=0.79-0.41=3.6+0.1=
3.3+0.8=6.9-2.4=0.6+0.16=3.3-0.7=
5.2-0.8=9-1.8=0.61+0.41=8.7-0.8=
7.6+0.4=6.7+0.7=0.72-0.34=8.3+0.2=
二、混合运算。
0.82+0.26+4.95.6-0.32-0.6868.5-48+14.5
80.63+22.81+38.0762.12+14.5+93.325.64+2.65-2.55
90-(9.03+0.17)92.6-(28.8-5.7)7.12-5.49+1.15
一、口算。
5.1-0.1=7.3+2.3=0.66-0.03=8.1-0.1=
6.7-0.1=7.7+2.7=0.8+0.06=6.8+0.6=
1.1-0.2=7.6-2.5=0.69+0.11=6.6-0.3=
1.3+0.6=7.2+3.9=0.65+0.27=3-0.5=
7.2+0.4=6.6+0.1=0.61+0.37=5.7-0.2=
7.9-0.4=8.9-2.4=0.71-0.45=1.7-0.4=
7.9+0.2=7.7-3.2=0.6+0.2=6.3+0.9=
3.5+0.5=6.4-2.8=0.63-0.38=7.1-0.6=
二、混合运算。
0.72-0.17+7.88.9-0.45-2.5537.9-17.6-13.8
82.24-37.46+33.9175.27-23.15+95.728.73+5.26-2.8
70-(2.43+0.15)71.6+(16.1+3.3)7.55+3.45-2.07
一、口算。
5.3-0.3=8+3.9=0.76+0.11=4.3+0.6=
5.4-0.8=7.6-2.1=0.69+0.18=2.2-0.5=
2.6-0.3
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