人教版四年级数学下册小数加减法混合运算专项练习题47.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47.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47
一、口算。
1+0.8=6-4=0.84+0.21=9+0.3=
4-0.9=8.3-3.9=0.82+0.07=5.7+0.6=
1.5+0.6=6.1-0.7=0.83+0.14=7.4+0.4=
5.3+0.1=6+3.8=0.83+0.46=7.2-0.6=
2.8+0.2=6+4.7=0.74+0.24=4.4+0.8=
7.5-0.9=8.3+1.9=0.84-0.35=5.9-0.1=
3.6+0.9=7.3-4.1=0.8-0.28=2.4+0.1=
2.5-0.3=7.6+2.9=0.83+0.25=7.4-0.8=
二、混合运算。
0.62-0.45+0.59.3-0.33-2.6794.1-33.9+45.6
87.63+26.45+27.1480.6+16.51+10.075.85+3.76+1.84
60-(1.19-0.7)83.5-(12-7.9)9.96+1.07+5.59
一、口算。
2-0.9=8-1.5=0.7+0.12=7.1+0.8=
7.8-0.5=6.9+1.1=0.67+0.32=5.8-0.4=
2.6+0.5=7.8-3.5=0.67-0.2=8.1-0.2=
2.7+0.1=7.6+2.9=0.61+0.47=1.8-0.8=
3.9+0.6=6.3+3.9=0.67-0.43=8.4+0.5=
6.8+0.5=6-4=0.85-0.07=2.4-0.9=
5.5+0.2=8.4-3=0.75-0.11=5.3+0.8=
8.4-0.5=7.9+0.5=0.89-0.1=8-0.2=
二、混合运算。
0.7-0.35+6.39.8-0.57-0.4369-25.8-27.6
78.57+10.72+85.7185.13+46.31+49.978.18-2.35+1.9
50-(2.46-0.21)83.7-(23.5+9.6)6.61+4.51-1.66
一、口算。
3.7+0.1=6.3-1.7=0.64-0.04=7.2+0.3=
8.1+0.7=6-4.3=0.84-0.32=5.8+0.4=
5.5+0.1=7-3.5=0.75+0.38=6.2+0.7=
3-0.5=6.5+2.7=0.61-0.03=5.8-0.8=
1.5+0.5=8+4.2=0.89+0.4=1.6+0.6=
7.3-0.5=6.8-3=0.83-0.49=7.3+0.7=
6.3-0.9=8.3-1.8=0.9+0.46=8.4+0.3=
4.1+0.4=7.5+1.3=0.72-0.1=5+0.2=
二、混合运算。
0.79+0.17+8.15.7-0.19-1.8155.5-28.5-15.7
86.93-36.21+44.9165.25+16.18+57.364.82+2.21-1.34
60-(5.11-0.36)82.1-(29.7+1.2)8.04-6.17-1.08
一、口算。
3.7-0.9=8.5+4.9=0.8-0.4=1.2+0.1=
2.5+0.7=9+2.3=0.7+0.01=8.5-0.3=
7+0.3=8.6+4=0.88-0.23=9-0.4=
7.6+0.7=6.6+1.4=0.66-0.12=3.3+0.3=
8.8-0.1=6.6-1.8=0.85-0.4=6.5+0.4=
6.7+0.6=6.6+2.3=0.69+0.04=6.8-0.2=
6.9-0.2=6.8+3=0.68+0.11=5.4-0.2=
1.2+0.8=8.9-0.9=0.61-0.11=8.5+0.9=
二、混合运算。
0.63+0.43+0.67.8-0.4-4.693.7-66.1+16
66.79-39.6+72.0667.76+11.81+41.095.12-1.93+1.04
70-(2.18+0.27)80.4-(13.2+7.3)3.84-1.3+1.66
一、口算。
8.3+0.8=7-4.4=0.61+0.03=5.5-0.9=
1.8+0.7=8.3+4.7=0.68+0.16=5.5+0.4=
4+0.8=7.2+2.8=0.6+0.02=6.1+0.2=
8.8-0.1=8.1-4.6=0.8-0.2=6.3+0.9=
3.3+0.3=8.8-0.5=0.72+0.32=7.1-0.6=
5.4-0.7=6.9-2.9=0.83+0.2=8+0.4=
3.3+0.7=6.7+2.6=0.86-0.22=6.4+0.3=
3+0.1=6.9+3.8=0.6+0.1=1.5+0.1=
二、混合运算。
0.89+0.32+2.19.9-0.39-4.6155-12.5+38.9
77.43-35.5+14.2989.36-44.65+44.16.94+3.59+2.53
90-(3.27+0.95)74.5+(10.4-3.7)8.91-1.28-3.21
一、口算。
3.9-0.7=8.2+3.8=0.8-0.22=3.9-0.2=
8.1+0.2=7.3-0.6=0.88+0.24=1.5-0.2=
5.1+0.6=7.3-2.9=0.82-0.19=4.8+0.4=
5.5+0.7=7.7+4=0.89+0.1=7.6-0.8=
6.5+0.8=8.7+0.8=0.84-0.34=2.3-0.5=
3.6+0.5=8.3-3.4=0.63-0.25=2.2+0.8=
4.5+0.7=8.1-2.1=0.67-0.46=3.3-0.2=
8.9-0.6=8.6+3.6=0.7-0.49=5.4-0.1=
二、混合运算。
0.75-0.45+97.1-0.32-2.6889.4+73.5+12.1
67.38-39.45+91.4387.53-33.15+38.689.44+3.24+3.66
40-(4.33+0.93)88.1+(10.3+6.2)7.02-3.19-2.91
一、口算。
9+0.5=6.9+1.1=0.69-0.08=1.7+0.7=
4.1-0.4=6.3+3.2=0.9+0.14=5.3+0.3=
3.9-0.4=8.7-1=0.68-0.36=7.6-0.6=
8.5+0.6=6.3-2=0.82-0.44=6.7-0.4=
3.6+0.1=7.4+2=0.84+0.26=5.1-0.2=
3.8-0.9=7.1+1.8=0.89+0.11=3.8+0.4=
5.3+0.1=6.3-2.4=0.64+0.07=8.2+0.6=
2.1+0.6=8.5+1.4=0.6-0.16=1.2+0.6=
二、混合运算。
0.76+0.13+2.28.7-0.28-3.7258.2-30.9-19.4
78.32-17.77+77.7774.89-34.08+95.115.6+2.05-3.53
70-(2.27+0.72)66.5+(23.1-5.2)7.13-3.86+2.69
一、口算。
4.8+0.7=6.2-0.6=0.66-0.17=7.7+0.7=
8.1-0.3=8.4-1.7=0.84+0.46=7.9+0.3=
5.9+0.6=8.6-0.8=0.6+0.48=2.4+0.2=
5.6+0.5=7.5-0.8=0.63-0.1=3.4-0.8=
3.6-0.2=7.3-0.3=0.62-0.2=4.8-0.9=
1.5+0.8=8.6-3.5=0.67+0.22=1.6-0.4=
7.8+0.8=7.8-0.8=0.79+0.34=5.3+0.7=
1.7-0.1=8.3-4.7=0.81-0.39=9-0.7=
二、混合运算。
0.72-0.1+9.56.3-0.28-0.7276.8-14.7+12.2
67.02-14.79+22.2767.9-13.75+13.618.9+4.62-3.17
30-(3.03+0.34)92.2-(24.4+6.4)4.08-1.94+1.79
一、口算。
2.3-0.3=8.5-0.6=0.67-0.15=6.3-0.1=
2.1-0.2=8.5-4.9=0.71+0.4=6.8-0.2=
6.3-0.5=8.7+3.1=0.9-0.27=8.2-0.2=
7.1-0.5=6.2+1.5=0.78-0.42=5.1-0.1=
3.2+0.2=7.8+2.7=0.65-0.31=3.8+0.6=
6.8-0.3=6.1+2.4=0.65+0.48=4.4-0.2=
7-0.3=7.7+2.7=0.78+0.19=1.3-0.7=
1.5+0.4=6.3-4.3=0.82+0.36=9-0.9=
二、混合运算。
0.69-0.03+5.69.7-0.15-4.8565.8-10.2+23.5
62.65-25.89+88.4363.75-13.33+97.318.04+5.66+1.16
70-(2.95-0.8)66.5+(16.1-9.4)9.87-6.19-2.59
一、口算。
8.1-0.1=8.3-1.2=0.63+0.19=7.1-0.4=
2.5+0.5=6-3.4=0.7-0.16=5.4+0.1=
5.7+0.2=8.4+0.5=0.87-0.4=7.6+0.1=
6+0.9=7.4-3.3=0.76-0.04=4.2+0.7=
1.2+0.8=7.6+1.4=0.88+0.49=6.4-0.4=
5.1+0.8=6.6+2.6=0.82-0.4=9-0.4=
7.5-0.8=8.3+4.2=0.9-0.34=4.6-0.8=
5.8-0.5=8.8-2.7=0.73-0.03=7.9-0.5=
二、混合运算。
0.82-0.01+9.99.2-0.7-2.385.4-42.8-35.6
71.87-20.9+39.7983.23-16.85+30.085.78-4.12-1.34
20-(3.26-0.45)89.4-(14.3+4.5)8.97+6.2+1.67
一、口算。
8+0.1=7+3.3=0.67-0.03=8-0.3=
3.7+0.7=7.9+2.5=0.77-0.32=2.4+0.2=
8.9-0.2=8.1-2.5=0.74+0.31=2-0.2=
7.2+0.8=6.4+1.9=0.61+0.06=1.5+0.9=
1.1-0.9=7.1-1.5=0.83+0.26=5.7-0.7=
7.2+0.1=8-0.4=0.79-0.39=1+0.4=
5.7+0.6=8.3+3.8=0.75+0.33=7.8+0.8=
4.9+0.1=6.3+3=0.79-0.47=8.9-0.3=
二、混合运算。
0.64+0.26+5.37.4-0.71-4.2945.1-14.1+23.2
71.39-32.19+92.6381.42-24.97+18.357.96-2.12-2.74
30-(3.06-0.36)95.6-(18.9+9.7)9.74+2.15-4.64
一、口算。
1.7-0.1=6.2-0.2=0.74-0.18=3.2-0.3=
4.5+0.8=7.7+0.2=0.79+0.15=5.8+0.9=
7.1-0.4=7.6+1=0.75+0.19=4.7+0.4=
7.5+0.5=8.8-2.7=0.72-0.08=6.7+0.1=
4.2-0.6=7.9-0.9=0.66-0.47=6.2+0.9=
2.4+0.3=8-0.7=0.72-0.08=7.7+0.1=
8.1-0.9=6.3-4.3=0.69-0.26=3-0.4=
7.4+0.5=8.9-4.8=0.72-0.1=6.9-0.2=
二、混合运算。
0.66+0.24+0.65.1-0.27-1.7383.1+65.3+14.3
71.06+29.85+37.165.77+37.73+52.957.14+2.23+3.32
20-(6.84+0.34)97.4-(26.6+9.7)4.98-1.54+1.74
一、口算。
1.6+0.7=8.8+1.2=0.64-0.02=2.4-0.5=
6-0.7=9-4.9=0.67-0.3=3.8+0.5=
3-0.6=7.6-0.9=0.65+0.08=9+0.9=
3.5-0.6=6.4-3.1=0.63-0.39=5.8+0.3=
8.7-0.8=7.6-2.2=0.63-0.36=7.6+0.9=
1.6+0.3=6.5-4=0.68-0.4=8.2-0.3=
1.7+0.6=6.4+0.6=0.75+0.04=4.2+0.5=
5.6+0.7=8.4+2.3=0.83+0.37=5.1+0.8=
二、混合运算。
0.66+0.07+9.57.1-0.29-2.7170-33.7+13.2
70.07-39.41+39.4578.38+17.28+88.999.12-2.1+5.68
90-(6.58-0.28)61.3+(29.5-2.2)9.09+2.5-6.51
一、口算。
2.3-0.4=7.1+4.6=0.86-0.45=3.2-0.8=
6.5-0.8=9+3.6=0.63-0.25=6.5+0.7=
5.8-0.4=6.5+4.5=0.65+0.2=1.9-0.9=
6.7-0.2=7.8-4.4=0.73+0.42=1.3-0.6=
1.8-0.1=6.7+2.3=0.81-0.32=8.9+0.7=
5.2+0.9=8.1+2.2=0.89-0.11=7.5+0.2=
2.1+0.1=8.7+4.6=0.67+0.45=4.7+0.7=
1+0.9=8.7+4=0.66+0.34=1-0.2=
二、混合运算。
0.78-0.09+7.69.2-0.81-3.1959.9-27.3+31.1
71.35+14.77+25.8877.61+25.36+67.244.55+1.6-2.23
60-(3.16-0.75)67.4-(20.4-1.4)8.53-1.13+4.54
一、口算。
4.6+0.1=8-3=0.7+0.09=7.8+0.6=
1.8-0.6=6.2+4.8=0.76+0.42=2.8+0.3=
7.4+0.1=8.4+0.7=0.84-0.49=3.3+0.2=
3.7+0.3=9-0.9=0.66-0.19=5.8+0.3=
2.3+0.8=8.1-4.4=0.76+0.25=2.1-0.8=
2.3+0.8=7.5+3.6=0.61-0.26=1.9-0.9=
5.2-0.6=7.3+4.4=0.83-0.28=1.6-0.2=
7.1+0.6=7.9+0.1=0.69+0.13=6.9+0.5=
二、混合运算。
0.62-0.47+4.85.3-0.88-4.1239.4-18.6-14.1
66.94+39.75+30.8475+11.28+15.896.83+4.88-1.9
60-(1.8+0.38)62.3-(29+2.1)4.32+1.96-1.13
一、口算。
6.2+0.8=7.1-1=0.66+0.3=9+0.8=
6.1+0.3=6.8-4.3=0.69+0.02=8.2+0.3=
4.2-0.2=8.5+4.8=0.66+0.41=1.1-0.3=
8.3+0.6=6.3-1.1=0.83-0.23=2.8+0.4=
7+0.3=7.1-0.8=0.67+0.09=8.8+0.4=
4.2-0.3=8.5+3.6=0.87+0.46=7.2-0.1=
6.9-0.1=7.2-1.6=0.7-0.06=3.7+0.7=
3.1-0.5=6+4.9=0.78+0.44=1.7-0.9=
二、混合运算。
0.79-0.08+2.86.1-0.21-4.7992+20.3+66.1
70.36+22.29+49.3982.9+13.5+14.536.03-1.1+3.08
70-(1.8-0.71)71.4+(18.7+8.8)4.71+2.07+1.92
一、口算。
7.2+0.4=7+1.5=0.67+0.36=5.9+0.3=
4.6+0.1=7.4-2.4=0.72-0.43=6-0.5=
6.3-0.3=8.6+2.9=0.85-0.39=2.1-0.6=
6.1+0.4=7.9+2.1=0.71+0.13=7.2+0.5=
2.4-0.7=7.5+1.8=0.88+0.2=2.7-0.7=
7.5-0.9=8.4-1.2=0.73+0.31=8.1-0.2=
1.3-0.3=6.6-0.1=0.61+0.44=3.1-0.3=
1.7+0.3=8.7-2=0.64+0.06=8.6-0.5=
二、混合运算。
0.64+0.19+9.55.8-0.5-2.558+37.9+13.9
77.62+16.77+35.1778.02+25.07+35.373.57-2.07+1.24
30-(5.56-0.82)63.7-(19.2-5.4)4.51-2.9-1.32
一、口算。
1.5-0.4=6.4-2.1=0.86+0.4=3.2-0.3=
4-0.2=6.3-1=0.82+0.27=1.9+0.8=
8.3-0.5=8.2-4=0.67-0.28=8.2+0.8=
6.5+0.6=
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