人教版四年级数学下册小数加减法混合运算专项练习题161.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161
一、口算。
1.7-0.7=8.2+0.8=0.77+0.01=6.6-0.6=
4.7+0.5=6.6+1.1=0.74-0.18=5.6+0.1=
5.4+0.3=6.8+1.2=0.72-0.13=6.7-0.4=
7+0.2=7.4+4.2=0.9-0.21=4.4+0.5=
8.2+0.6=8.8+3.5=0.68-0.21=3+0.7=
1+0.2=7.4-4.3=0.68+0.16=2.8-0.4=
4.6+0.2=7.8+1.3=0.85+0.44=1.2-0.9=
8.7+0.2=8.5-3.8=0.83-0.11=4.4+0.7=
二、混合运算。
0.69+0.37+7.87.9-0.65-0.3541.8+18.5+22.3
88.15+26.76+53.6977.44+15.57+88.525+3.02+1.28
90-(5.23-0.6)89.7+(26+9)3.99-1.77+1.76
一、口算。
5+0.3=6.7+1.8=0.9+0.16=8.3-0.8=
2+0.8=7.3-0.6=0.86+0.4=8-0.7=
1-0.5=6.2-4.6=0.65+0.13=1.8+0.9=
2.6+0.9=7.1-2.3=0.7-0.48=4.4+0.3=
2.2-0.1=6.6-4.7=0.9+0.08=1.4+0.7=
2.4-0.7=6.3-2.6=0.8-0.35=5.9+0.5=
5.5-0.3=6.5+1.9=0.72+0.34=8.5-0.4=
8.6+0.6=8.4-1.5=0.73-0.37=5.7+0.8=
二、混合运算。
0.78+0.19+9.86.8-0.63-1.3799.1+53.5-40.7
80.24+14.79+14.4185.54-43.33+73.479.07+7.31-1.4
30-(6.85+0.2)88.3+(16+6.1)9.09-3.69-1.17
一、口算。
6.7+0.2=7.8+0.3=0.68-0.37=2.5-0.4=
4.9-0.6=9-0.5=0.71+0.19=4.1-0.3=
7.1+0.5=6.5-2.6=0.68+0.31=2.1-0.5=
1.1-0.1=8.4-0.3=0.61-0.21=4.7-0.1=
4.6-0.8=6.9+2.5=0.87-0.08=3.4+0.1=
7.2-0.6=8.5+1.1=0.72-0.36=7.6-0.2=
6.7-0.2=8.3-4.2=0.77-0.37=6.8+0.5=
1.3-0.3=6.9+1=0.89-0.28=7.3+0.8=
二、混合运算。
0.65-0.24+4.18.6-0.3-3.798.7+46.8+47.2
76.51+34.56+84.9373.88-19.52+18.428.86-1.61-3.01
80-(5.53+0.31)80.8+(15.4-7.8)8.44+2.06+3.76
一、口算。
6.4-0.6=8.5-3=0.79+0.29=6.7+0.5=
5.9-0.1=8.5-2.4=0.77-0.46=8.4-0.5=
5-0.4=6.2-4.9=0.83+0.49=8.3-0.7=
7.8+0.7=8.3-3.1=0.75+0.3=5.2-0.9=
3.4-0.3=8.8+1.9=0.73-0.19=1.2-0.3=
1.8-0.8=7.7+2.9=0.88-0.22=2.4-0.8=
1.6-0.8=6.8-2.4=0.65+0.33=1.8-0.4=
4.2+0.9=6+1.6=0.81-0.02=3.6-0.4=
二、混合运算。
0.9+0.37+8.55.9-0.64-1.3645.8+29.3+10.4
83.02-44.49+72.3187.54+35.46+88.777.23-5.29+1.58
90-(5.55+0.68)87.6-(15.4-3.9)4.66-2.72-1.41
一、口算。
4.7+0.1=7.8-1.5=0.6+0.38=5-0.7=
8.3+0.1=7.4-1.7=0.73+0.45=7.5-0.8=
4.1+0.3=6.4+3.4=0.86+0.48=8.4-0.8=
2.9+0.5=6.4+4.2=0.61+0.01=8.3+0.9=
5.6+0.1=6.7-3.2=0.75+0.31=4.3+0.2=
6.8+0.9=7.5-0.9=0.83-0.37=4.8+0.9=
2+0.7=6.7-1.8=0.62-0.13=1.5+0.1=
3.1-0.3=7.3+1.3=0.86+0.33=3.5-0.4=
二、混合运算。
0.76-0.25+2.35.2-0.64-0.3658.9-25.9+28
60.8-11.3+13.6582.16-22.24+37.29.76-2.76+1.99
80-(1.08+0.67)79.6-(12.4+3.8)4.26-2.18+1.43
一、口算。
5.9+0.8=6.3-3.1=0.62-0.35=5-0.3=
6.7-0.6=7.9-0.4=0.86+0.44=2.7-0.3=
4.9+0.4=8.7-4.7=0.6+0.06=2.4-0.1=
5.3+0.2=8.4+3.4=0.89-0.09=1.3+0.4=
2.1-0.8=6-2.4=0.61-0.24=2.1-0.7=
2.1+0.9=8.3-3.5=0.65-0.07=1.5+0.1=
5.3+0.9=6.2-1.6=0.77+0.39=3.3+0.4=
6.4+0.7=6.1+4.8=0.78-0.33=7.3-0.7=
二、混合运算。
0.88-0.46+6.98.3-0.85-1.1590.7-35.4-31.5
84.1-16.44+76.384.73+22.04+79.466.87+3.3-1.53
90-(3.31+0.49)80.5-(26.5+7)3.96+1.08+1.6
一、口算。
4.8-0.8=8.9+1.3=0.75-0.11=7.3+0.1=
5.3-0.3=6.9+2.8=0.82+0.26=5.6+0.9=
3.6+0.9=8.2-2.1=0.65-0.19=7.1+0.7=
5.9-0.5=8.7+4.9=0.79+0.39=2.8+0.9=
6.4-0.8=8.8+2=0.76-0.27=4.3+0.2=
2.9-0.7=8.7+2.7=0.6-0.06=8.5-0.4=
4.4+0.8=8.6-3.1=0.71-0.23=7.1+0.9=
1.9+0.5=8.8-4.5=0.6-0.29=1.9-0.2=
二、混合运算。
0.89+0.26+1.37.1-0.44-4.5685-62.5+14.1
76.5-45.39+29.0966.46-18.39+59.893.88-2.06+1.81
20-(8.25+0.12)67.3+(22.9+7)9.87-5.99+1.01
一、口算。
6.6+0.2=8.6-4=0.9-0.49=2.1-0.5=
3.3+0.1=7.6-0.9=0.65-0.18=1.4+0.7=
8.6+0.3=6.5-4.2=0.9+0.24=9-0.5=
8.4+0.9=8.1+0.5=0.75+0.15=4.4+0.1=
4.5-0.4=6.2-3.3=0.6-0.2=7.2-0.9=
4.1+0.3=6.2+1.7=0.76+0.4=8.1+0.7=
6-0.1=8.3-0.4=0.77-0.02=2.2-0.9=
2.8+0.1=6.3-4.6=0.89-0.32=5.8-0.3=
二、混合运算。
0.67-0.13+8.57.4-0.18-3.8272.4-28.8-14.3
63.18-14.01+32.3381.85-36.48+23.545.07-2.17+1.55
80-(9.82+0.31)87.1-(17.6-2.2)3.72+1.17+1.69
一、口算。
6.5-0.1=6.1-0.1=0.69-0.12=6.3-0.9=
2.2-0.2=6+1.3=0.78+0.17=3.8+0.8=
7.4+0.1=6.5+3.1=0.63-0.35=4.8-0.4=
4.3+0.8=8+4.7=0.6-0.36=8.5-0.5=
4.1-0.4=6.9-2.2=0.77+0.08=7.5+0.1=
4.3+0.2=8-2.9=0.68+0.41=8+0.3=
2.6-0.2=6-1.9=0.87+0.33=6.7-0.5=
5.6+0.4=6.9-1.3=0.64-0.12=2.4+0.9=
二、混合运算。
0.89+0.15+78.1-0.28-4.7259.1-31.4-13.2
67.76-17.01+22.2974.1-23.62+64.514.48-2.22+1.77
80-(3.75+0.78)60.3+(29.4-2.4)7.86+6.03+1.28
一、口算。
5.6-0.3=8.3-1.5=0.73+0.09=8.8+0.2=
8.3-0.8=8.1-1.5=0.74+0.25=2.9-0.4=
4.7-0.9=6.5+3.1=0.86+0.31=2.6+0.9=
6.8-0.2=7.6+2.9=0.79+0.28=2.6+0.9=
7.2-0.5=8.9+4=0.64-0.02=6.8-0.7=
3.1+0.6=6-0.4=0.67+0.06=5.8+0.4=
3.9-0.6=7.4-0.7=0.81+0.23=8.4+0.8=
1.1-0.6=8.4+4.2=0.9+0.07=1.1-0.6=
二、混合运算。
0.63-0.41+3.59.8-0.4-0.684.5+25.6+31.2
63.06+39.73+38.8960.03-11.01+22.617.65+4.22+1.58
30-(9.74-0.19)69.9+(29.7+2.2)4.37+2.73-1.04
一、口算。
7.2-0.8=6.5-3.2=0.71-0.18=3.5-0.8=
4.4-0.2=7.2-1.6=0.65+0.32=4.2-0.1=
4.3-0.9=8.6-0.6=0.83-0.21=7.9-0.1=
3.6-0.3=7.2-3.1=0.65+0.15=5.5+0.6=
4.2-0.3=7-2.4=0.88-0.28=4.6-0.3=
2.9-0.5=7.1-3.1=0.67+0.41=4.5-0.6=
3.4+0.1=6.8+3.9=0.64+0.07=8.4+0.9=
8.9+0.3=9+4.2=0.89+0.47=4.2-0.6=
二、混合运算。
0.89+0.06+1.67.2-0.36-3.6449.5+27.6+12.8
81.44+24.47+95.9660.01-35.6+32.879.4-4.76+3.4
20-(4.81-0.21)81-(10.6-2.8)6.65-4.12+2.53
一、口算。
4.4+0.8=7.2+4.1=0.85-0.24=6.9-0.2=
7.4-0.5=7.1+1.2=0.67-0.42=4.5-0.8=
6.6-0.6=7.6-4.3=0.88-0.04=2.6-0.5=
3-0.9=8.2+1.5=0.65-0.37=2+0.4=
3-0.7=6.3-2.5=0.6-0.1=6.1+0.4=
7.5+0.4=8.1+4.4=0.66+0.33=6.9-0.6=
4.3-0.6=6-1.1=0.9-0.23=2.4+0.5=
7+0.5=8.6+0.4=0.76+0.05=1.7+0.9=
二、混合运算。
0.73+0.06+7.45.9-0.18-4.8252.8-22+13.5
86.82-48.57+51.5969.73-37.06+64.824.71-1.44+1.83
80-(9.08+0.45)92+(15.7-9.9)8.62-4.87+1.15
一、口算。
4.7+0.9=6.3+3.4=0.61+0.3=5.3+0.6=
6.8+0.2=6.6+0.5=0.67-0.33=8.4-0.6=
3.6-0.7=6.1+0.9=0.62-0.13=2.2-0.8=
8.1+0.5=7.3-3.2=0.75-0.47=5.2-0.9=
7.1+0.3=7.6-3.5=0.72-0.46=8.3-0.3=
6.2+0.8=8.6+2.7=0.82+0.09=7.8+0.5=
3.5+0.2=7.6-0.3=0.8-0.35=5.3+0.6=
7.1-0.6=8.3-1.6=0.83-0.2=8.7-0.6=
二、混合运算。
0.63-0.17+4.65-0.43-4.5786.7-41.9+29
71.01+23.13+76.8976.39-32.85+44.696.25-4.61+1.56
60-(8.02+0.77)84+(15+9.3)6.12-3.24-2.81
一、口算。
5.6+0.1=7.7+3.5=0.75+0.26=7.3-0.5=
7-0.3=7.5-1.7=0.79+0.4=5.2+0.9=
8.1-0.8=8.9-3.2=0.72-0.18=3.1-0.2=
2.4+0.3=7.3+1=0.74-0.19=3.4+0.6=
4.4+0.9=7.7-4.6=0.86+0.46=5.5+0.6=
3.8+0.5=6.8+1.2=0.89+0.09=5.1-0.2=
7.7-0.1=8.2+2.5=0.87-0.15=3.6+0.5=
4.8+0.7=7.2+3.2=0.67-0.41=1.6-0.8=
二、混合运算。
0.69-0.18+6.45.6-0.37-3.6354.7+19+17.5
73.24+43.57+51.4772.43+27.29+59.198.33-5.75+2.33
20-(4.59+0.42)98.3-(22.6-5.5)6.09-1.97-3.78
一、口算。
8.6-0.4=7.4-3=0.73+0.01=8+0.6=
1.6-0.9=7.5-1=0.77+0.28=4.3+0.6=
6.7-0.5=7+0.8=0.8+0.06=1.4+0.6=
1.7-0.6=6.6-2.7=0.65-0.29=8+0.2=
7.9-0.2=7.8+1.1=0.65+0.05=7.6+0.1=
1.1+0.9=7.1+1.2=0.71-0.47=5.8-0.3=
3.8+0.6=7.6+4.5=0.88+0.23=5.2-0.8=
3.8-0.7=6.4+1.3=0.6-0.26=3.6+0.6=
二、混合运算。
0.73+0.24+5.77.8-0.23-3.7764.9+48.8-13
70.56-26.52+57.0966.73-43.74+31.47.51+5.62-1.7
40-(3.93-0.84)74.6+(24.9+1.6)9.75-3.72-2.42
一、口算。
1.4+0.3=7.5+0.6=0.89-0.01=4.4-0.4=
2.8-0.7=8.1+1.2=0.83+0.32=7.5-0.2=
8.4-0.6=7.2+2.6=0.71+0.03=8.4-0.7=
1.8+0.4=8.4-4.1=0.61+0.03=1.5+0.4=
3.3+0.5=8-4.5=0.8-0.1=8.3-0.8=
7.9+0.8=7.5-1.5=0.86-0.35=7.1-0.4=
1.3-0.1=6.5-3=0.88+0.45=8.4-0.1=
6.4-0.2=8.2+2=0.8+0.09=1.9-0.8=
二、混合运算。
0.71+0.03+6.89.2-0.25-1.7547.3-10.1-14.3
82.86-14.55+15.6669.29-10.3+61.093.75+2.14-1.12
80-(9.37+0.3)89+(20.3+7.9)8.02-2.32+4.55
一、口算。
4.8-0.2=7.1+1.6=0.65-0.34=8.6+0.8=
3.2+0.3=8.7+4.2=0.72+0.21=8.6-0.8=
5.8+0.5=9+4.5=0.86+0.14=3.6+0.1=
7.2+0.5=7.1-0.5=0.88+0.36=7.8-0.6=
2+0.1=7.2+1.4=0.63+0.34=4.7-0.8=
3.9-0.9=6-1.8=0.76+0.28=5.5-0.4=
4.1+0.9=7.3+4=0.72-0.43=2.2+0.2=
5.3+0.2=6+2.3=0.68-0.29=5.5+0.6=
二、混合运算。
0.8-0.22+3.37.9-0.59-3.4173.9+14.3-43.1
60.72+47.04+94.1587.9-47.73+61.566.08+4.27-1.72
80-(5.96+0.66)64.5+(15.3+9.7)6.42-4.69+1.42
一、口算。
7+0.8=6.5-0.3=0.89+0.42=9+0.2=
1.6-0.4=8-3.4=0.76-0.13=6.6-0.8=
3.7-0.7=8-4.5=