人教版四年级数学下册小数加减法混合运算专项练习题140.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140.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140
一、口算。
8.8+0.8=7+2.6=0.79+0.25=5.3-0.3=
4.1+0.4=8.7-1.5=0.63+0.37=4.8-0.6=
8.1+0.6=6.2-4.2=0.72-0.26=4.7-0.1=
4.2+0.4=7.2-4.8=0.89-0.41=7.5-0.4=
1.3+0.3=8.4-0.9=0.6-0.12=3.8-0.2=
3.8-0.8=7.6+0.1=0.77-0.1=8.7-0.3=
8.9-0.4=9-3.7=0.76-0.04=4-0.1=
7.2-0.8=6.1-2.4=0.71+0.22=6.6-0.4=
二、混合运算。
0.8-0.33+7.68.6-0.48-3.5284.5-35.8-38.5
60.02+24.49+22.5978.28-41.78+34.715.2-2.04+2.67
50-(9.66-0.64)73.1+(29.5-7.5)4.83+2.46-2.35
一、口算。
3+0.8=7.8-1.7=0.79-0.02=6.9+0.5=
8.1+0.6=7.8+0.2=0.81+0.23=4.8+0.1=
1.7+0.5=8.9-2.7=0.72-0.18=8+0.8=
8.5-0.1=8.9-0.1=0.68+0.34=6.4-0.8=
3.5-0.6=7.5-4.3=0.81+0.49=5.7-0.3=
6.2+0.5=7.6+3.1=0.72+0.42=1.9+0.5=
9-0.9=7.2+1.3=0.68+0.35=6.6+0.2=
4.7+0.5=6.1+3.4=0.61+0.44=3.4+0.3=
二、混合运算。
0.85+0.34+5.36.2-0.73-0.2741.5+26.1+10.1
62.02+35.11+32.183.91+17.02+34.969.48-6.8+1.79
80-(4.22+0.34)95.7+(20.3+3.3)7.51-4.36-2.83
一、口算。
3.4-0.1=6.2+3.5=0.6-0.21=1-0.8=
5.8-0.4=6.4+4.5=0.67-0.29=4.4-0.9=
6.3+0.3=8.2+2.4=0.64-0.14=7.2-0.1=
6.4-0.8=6.7+3.2=0.8-0.12=3.6-0.8=
1.4+0.2=6.1-4.7=0.65+0.16=5.1-0.8=
1.9-0.5=6.1-4.1=0.7-0.3=8-0.3=
7.3-0.1=6.3-4.8=0.65-0.35=5.3+0.1=
8.8+0.3=7.2-2.6=0.84+0.25=2-0.8=
二、混合运算。
0.61-0.33+7.75.9-0.47-2.5392.5-10.3-54.4
74.12+24.41+60.4171.75+32.44+81.879.58-7.36+1.56
50-(2.19+0.25)70.6+(17.9-4.7)8.8-7.04+1.53
一、口算。
6.1-0.6=7.6-4.3=0.63-0.19=3.8-0.7=
4.9-0.8=8.6-4.6=0.83-0.42=3.3+0.1=
1.4+0.1=7.4+1.9=0.87-0.22=8.9-0.5=
3.4-0.4=8.6+0.1=0.68-0.43=7.9+0.6=
5.2+0.7=7.2-3=0.88+0.03=7.1-0.3=
3.1+0.1=8.5+0.1=0.72-0.36=2.3-0.9=
3.9+0.4=6.8+1.8=0.68+0.12=6.9+0.5=
3-0.9=7.6-4.1=0.84-0.07=3.7-0.1=
二、混合运算。
0.6+0.26+0.18.8-0.62-3.3895.5+12+13.2
84.67-40.47+54.7478.69-45.7+59.827.7-2.89+1.24
50-(4.91+0.95)69.3+(11.4-5.5)9.51+2.41+2.12
一、口算。
6.4-0.9=6.3+4.5=0.83-0.48=2.3+0.4=
5.8+0.6=8.5-2.1=0.76-0.18=1.3-0.7=
5.7+0.3=8.7-3.1=0.64-0.17=8.1+0.8=
2-0.5=7-1=0.81-0.49=2.4-0.1=
1.6-0.7=8.8+0.8=0.66+0.09=2.3-0.9=
1.7+0.7=6.7-0.3=0.69-0.35=2.2+0.1=
8-0.5=7.2+3.9=0.68+0.32=4.5+0.1=
7.8+0.5=8.5-3.9=0.77-0.37=1.9+0.7=
二、混合运算。
0.6+0.07+1.46.3-0.62-0.3880.9+12.8+50.5
88.46-16.98+74.0677.88-46.16+82.995.28+1.27+1.16
60-(1.72-0.72)68.8-(19.5-9.6)7.97+5.44-2.22
一、口算。
3.6+0.6=6.8+4.6=0.79-0.38=7.4-0.5=
4.6+0.3=8.9-1.9=0.63+0.05=1.7-0.2=
4.7-0.3=7.3-1.6=0.84+0.03=7.8-0.4=
8+0.1=6.4+2=0.61+0.13=2.7-0.6=
6.6+0.2=7.1-3.9=0.71+0.41=8.5+0.2=
5.4-0.2=7.4-4.2=0.63-0.48=2.6+0.7=
7.8+0.1=7.7-0.7=0.73-0.18=8.5-0.5=
2.8-0.4=8.1-0.8=0.68+0.43=5.9+0.1=
二、混合运算。
0.77-0.34+99.5-0.87-1.1359.6+11.8-19.3
74.17-41.57+92.7367.86+29.67+89.495.21+2.03+1.41
90-(9.07-0.65)68.7+(26.6-4.4)6.91+1.69-4.38
一、口算。
1.7-0.5=8.7+3.7=0.88-0.15=4.7+0.3=
4.7-0.7=6+0.1=0.69-0.22=8.5-0.2=
5.4-0.6=7-1.5=0.68+0.23=4.2+0.3=
5.6+0.5=6.5+0.7=0.75-0.38=8.6+0.7=
4.6-0.7=6+3.1=0.88+0.17=1.6+0.4=
1.4+0.7=6.7-0.1=0.68+0.47=8-0.9=
6+0.4=8.5-0.1=0.88+0.32=8.9-0.8=
2.3-0.8=7.8+2.9=0.63+0.31=8.9-0.8=
二、混合运算。
0.89+0.08+2.67-0.12-0.8850.6-11.5-38.8
66.23+32.73+26.1360.55-22.89+89.079.28+4.73+1.49
40-(9.47-0.64)88-(14.6-2.8)5.67-2.48-1.12
一、口算。
3-0.9=6.6-4.4=0.72-0.02=2.1-0.2=
2.8+0.4=8.2-0.7=0.73-0.35=5.9+0.2=
4.3+0.3=6.5+3.9=0.68-0.08=5.3-0.1=
5.1+0.2=7.5+2.4=0.8-0.28=8.5-0.6=
4.9-0.2=9-1.6=0.87-0.38=2.4-0.9=
3.3-0.3=8.9+4.6=0.84-0.42=3.6+0.7=
4.7-0.9=7.8-0.2=0.63-0.14=5+0.7=
8.5-0.5=8.7-0.4=0.81-0.19=6.4-0.6=
二、混合运算。
0.9-0.37+7.55.8-0.33-0.6791.8-47.6-14
64.57+38.19+80.3171.88-20.34+64.183.5-1.2-2.03
20-(3.16+0.42)61.7-(17.1-8.8)4.13-1.65-1.33
一、口算。
5.2+0.6=7.6+3=0.69+0.36=4.7+0.4=
2.2-0.4=6.9-3.7=0.74+0.38=6.6+0.8=
3.3-0.3=8.2+4.1=0.73+0.08=8.1+0.3=
3.2-0.5=6.9-4.1=0.85+0.47=3.9+0.3=
3.7-0.7=6.3+2.7=0.8+0.47=2.4+0.7=
7.4+0.4=7.8+0.3=0.68+0.47=1.9-0.9=
2.6-0.2=8.3-2.7=0.77+0.02=7.2-0.9=
4-0.5=8.4-1.8=0.83+0.45=5.5-0.9=
二、混合运算。
0.65+0.05+8.28.2-0.11-2.8941.6+16.9+24
67.04-22.9+82.1271.91-28.59+35.29.35-1.07-7.11
30-(4.91-0.62)79.7+(18.3-3.7)4.84+1.59+2.63
一、口算。
1.6+0.8=6.3+4.1=0.77-0.41=4.6-0.4=
7.2-0.8=8.7-0.3=0.63-0.36=7-0.2=
1.4-0.6=7.8+0.2=0.78+0.05=6.1+0.7=
1.5-0.4=7.7+1.9=0.88-0.26=2.1-0.4=
7+0.7=8+3.3=0.89-0.3=6.9-0.7=
6-0.9=7.8-3.6=0.84+0.27=6.1-0.5=
5.3-0.2=8-4.7=0.79-0.01=1.9+0.5=
1.2-0.7=6.4-1=0.85+0.27=6.6+0.1=
二、混合运算。
0.73-0.27+7.28.5-0.31-0.6979.6-32.4-32.4
60.71+23.2+85.6570.08-30.2+10.498.75-3.84-2.76
80-(1.17-0.15)60.6-(16.8-8.4)4.92+1.75-1.11
一、口算。
8.7-0.5=6.7+2=0.82-0.25=1.2-0.6=
3.3-0.9=6+1.8=0.64-0.11=5.1-0.5=
5+0.6=7.4+0.9=0.64-0.32=2.4+0.6=
7.2-0.3=7+1.3=0.77+0.1=1.5-0.5=
2+0.7=7.3+0.2=0.7+0.18=7.7-0.3=
7.2+0.7=8.3+2.6=0.74+0.21=4.6-0.2=
8.8-0.4=8.2+1.4=0.64-0.05=5.8-0.5=
2.8-0.8=7.4-2.5=0.71-0.32=5.3-0.4=
二、混合运算。
0.69+0.35+45.8-0.88-2.1275.9-47.6-11.3
85.81-12.27+97.6563.59+43.06+56.64.72+2.11-1.43
20-(7.04-0.4)87.4+(29.6+7)4.31-1.32-2.43
一、口算。
7.9+0.8=6.8+0.4=0.65-0.12=3.1-0.2=
4.3-0.5=9+0.5=0.65+0.11=1.8-0.1=
5.9-0.9=9+4.8=0.84+0.14=6.4-0.5=
9+0.6=6.5-0.7=0.81+0.14=2.1+0.4=
6.8+0.3=8.5+4.4=0.68-0.49=1.2+0.9=
3.5+0.7=7.7-0.8=0.65+0.31=2.8-0.1=
3.1+0.1=6.5-0.8=0.78-0.46=2.1-0.6=
7.1-0.5=8.7-0.3=0.64+0.27=8.4+0.8=
二、混合运算。
0.62+0.39+1.26.6-0.87-2.1394.7-33.6+45.8
74.37+29.74+23.9565.47+33.51+15.468.14-3.78+2.46
30-(3.26+0.11)67.7-(26.2-6.4)8.32-1.93+2.92
一、口算。
6.5+0.6=8.8-4.1=0.78+0.32=3+0.8=
2.3+0.1=8.1+1.5=0.79-0.06=1-0.4=
1.7-0.7=7.2-0.8=0.87+0.21=2.1+0.2=
4.4-0.1=6.5+0.7=0.63-0.49=2.6-0.6=
6.6+0.2=7.5+0.6=0.75-0.22=8.2-0.1=
8.3-0.4=6.7+2=0.82-0.43=5.8+0.6=
3-0.2=6.5-2.5=0.63+0.03=2.2+0.3=
1.2-0.3=8.9-3=0.66-0.49=8.5+0.9=
二、混合运算。
0.66+0.35+1.55.8-0.62-0.3858.7+10.7-33.7
85.01-37.53+73.2178.58-38.92+37.288.28-1.18-3.17
80-(5.27-0.78)64.6-(20.1+6.4)7.09-3.53+1.71
一、口算。
3.8+0.3=6.8-3.3=0.67-0.29=1.2+0.7=
4.6-0.3=6.9-2.6=0.63+0.18=1.8+0.4=
6.1+0.5=7.2-0.7=0.77+0.14=6+0.6=
3.2-0.9=6.5-0.1=0.84-0.05=4.1+0.6=
8.8-0.3=6.2-4.8=0.8+0.28=8.7+0.3=
6.9+0.3=8.8-0.2=0.64-0.18=4.2+0.8=
3+0.8=8.5-1.9=0.77+0.42=6+0.5=
2.2+0.5=7.1+1.6=0.71-0.13=2.4-0.3=
二、混合运算。
0.87+0.17+3.85.7-0.1-4.947.3+23.3+11.4
80.03-37.29+64.4589.84+30.43+66.846.79+2.39-4.34
20-(8.91-0.64)85.4-(12.7-2.6)4.65-2.82-1.67
一、口算。
3.4-0.9=6.2+0.3=0.79-0.31=2-0.7=
7.2+0.4=8.2+1.4=0.74-0.05=7.5+0.4=
3.8-0.8=8.9-0.6=0.88+0.01=5.2+0.4=
3.2-0.4=8.6+4.2=0.73+0.06=2.7+0.1=
5.9-0.2=8.5+4.5=0.74+0.19=8.6+0.6=
2+0.8=8.2-4.1=0.73+0.26=7.9-0.3=
2.5-0.9=8.6+3.9=0.78-0.23=6.2+0.6=
7.5-0.8=8.9+0.5=0.67-0.37=3.8+0.9=
二、混合运算。
0.72+0.03+9.69.9-0.85-2.1587.2-24.3+22.5
73.1-26.32+95.1182.05+27.01+64.078.17-3.22+4.19
30-(6.66+0.4)80.6-(29.5+7.5)5.12-2.88-1.26
一、口算。
1.2-0.4=7-0.8=0.7-0.21=2.5+0.4=
5.1+0.9=7.4-4.4=0.85-0.05=5.5+0.4=
1.1+0.1=6.6-2.9=0.76-0.45=5.9-0.7=
4.3-0.7=7.6-4.9=0.76-0.1=4-0.2=
2+0.7=8.5-3.3=0.65-0.26=6.4-0.2=
3+0.4=6.4+2.2=0.7-0.07=6.3+0.1=
1.9+0.9=7.3+1.8=0.76-0.42=2.6-0.9=
7.1-0.6=7.4-3.5=0.7+0.37=4-0.6=
二、混合运算。
0.66-0.46+9.36.4-0.77-4.2352.7+18.6+13.2
72.13-33.78+87.9861.53+26.34+23.445.5+2.92-2.34
60-(5.2+0.14)94.1-(14.6+1.8)7.83-4.83+2.82
一、口算。
3.9+0.4=8.3+1.9=0.61-0.47=7.3+0.7=
4.8+0.8=8.2+0.5=0.73-0.47=8.5-0.4=
7+0.5=8.2-1.4=0.83-0.08=6.7+0.1=
8.6-0.8=7.7+3.7=0.82-0.42=7.9+0.3=
8.6+0.7=6.9-1.2=0.63-0.46=3.3-0.7=
5.5-0.9=7.6+1.3=0.88-0.31=8.7-0.2=
4.3-0.1=7.7-1=0.9-0.18=2.2+0.6=
4.2-0.6=6.6+3.1=0.85-0.03=8-0.9=
二、混合运算。
0.84-0.25+9.25.9-0.77-2.2373+23.4-30
80.53-20.35+89.7662.4+26.57+41.914+2.2+1.06
20-(7.45-0.29)98.4-(19.8+7.2)4.68-1.48-2.76
一、口算。
8.3-0.3=9+2.4=0.72-0.47=4+0.1=
2.5-0.1=6.1-3.3=0.6-0.48=8.7+0.2=
6.5-0.7
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