人教版四年级数学下册小数加减法混合运算专项练习题92.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92.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92
一、口算。
3.3-0.5=7.1+4.5=0.87+0.39=5.6-0.9=
1.7-0.9=8.1-3.9=0.71-0.31=6.2+0.6=
6.1-0.6=6.2+3.5=0.88-0.39=5.2-0.4=
4-0.3=8.5-2.6=0.9+0.07=7+0.7=
2.4-0.1=7.1-1.6=0.85+0.12=5.1-0.3=
8.8+0.1=9+4.5=0.73+0.43=8.1-0.6=
1.9+0.9=6-4.7=0.71-0.34=8.7-0.6=
2.5-0.2=9-2.1=0.68-0.44=3.7-0.4=
二、混合运算。
0.85+0.13+5.95.2-0.36-2.6436.3+13.4+12.9
75.63+41.66+65.8770.85+34.04+547.44-3.01+1.25
60-(5.96-0.22)99.2-(19.1+2.6)9.57-5.77-1
一、口算。
7.2+0.6=8.7+2.1=0.86+0.15=2.7-0.6=
2.3-0.5=8.6+2.8=0.64-0.45=3.1-0.9=
1.8-0.8=8.2+4.9=0.84+0.41=4.9+0.3=
3.1+0.6=7.4-0.2=0.69-0.3=6.3-0.7=
4+0.5=9-4.8=0.66+0.22=5.9+0.6=
5.4-0.5=8.2-2.3=0.7-0.16=6.6+0.6=
1.9-0.9=8.1+3.7=0.87-0.1=5.4+0.8=
2.5-0.4=8+4.6=0.8+0.32=2.5+0.8=
二、混合运算。
0.72-0.18+89.1-0.34-3.6659.4+26+11.7
72.98-38.65+24.6180.8+35.14+75.499.73+2.56-5.39
40-(1.69+0.95)87.3+(21.7-1.6)7.99+1.68-3.72
一、口算。
6.7-0.6=6.2+2.1=0.74+0.03=7.6+0.6=
7.9+0.9=6.2-4.2=0.8+0.1=7.4+0.7=
4.3+0.5=6.6+4=0.7+0.17=6-0.1=
1.2-0.6=8.5+2=0.64-0.18=2.6+0.3=
7.4-0.4=7.8+1.5=0.88+0.4=2.1-0.4=
6.4-0.2=7.1-0.2=0.65+0.24=6.5+0.4=
7.6-0.9=7.5+2.2=0.68-0.11=3.3-0.1=
4+0.9=8.3+3.4=0.6+0.2=5.8+0.5=
二、混合运算。
0.87-0.33+7.86.6-0.17-1.8358.9-30.8+21
72.5-35.02+20.8781.26+26.38+14.633.97+2.29-1.21
30-(8.62+0.48)99.7+(15.7+2.3)6.64-3.43-2.96
一、口算。
8.5-0.2=9+2.1=0.69-0.04=2.8-0.4=
8.3-0.5=6.4-0.4=0.82-0.25=7.2+0.2=
8.9+0.9=6.2-2.4=0.68-0.26=2.6+0.4=
3.9-0.2=6.4-1.1=0.78+0.28=7.3+0.9=
4.1-0.3=6.9+3.4=0.71-0.26=1.2+0.6=
2.9+0.4=6.6-0.7=0.84+0.42=1.9-0.3=
1.3+0.1=8.1-2=0.82+0.02=4.3-0.4=
2.1-0.4=8.9+1.2=0.64+0.42=4.3+0.2=
二、混合运算。
0.72+0.04+7.37.3-0.84-4.1648.6+18.6+23.8
85.49-13.36+69.6578.38-17.24+64.573.75-1.93-1.72
60-(7.46+0.96)88-(11.1-5)5.12-1.45-2.42
一、口算。
4.7+0.7=8.7-1.3=0.72+0.45=7.8+0.6=
5.7-0.5=8.2+0.5=0.72+0.38=3.1+0.1=
8.8+0.3=8.9+0.8=0.67+0.39=4.5+0.2=
7.9-0.9=6.7-4.6=0.7-0.26=5.6+0.4=
4.7+0.9=7.1+1.4=0.87-0.37=7.4+0.9=
2.6+0.8=6+4.6=0.89-0.37=3.2-0.1=
4.1-0.5=6.5+1.4=0.89+0.48=6.8+0.2=
6.2+0.3=6.6-3.7=0.78+0.04=5.1-0.8=
二、混合运算。
0.89-0.32+9.96.5-0.85-1.1583.1+55.9-14.7
85.47+25.35+23.5582.97-27.01+18.734.62-1.18+2.41
20-(2.31-0.38)84.4+(12.9-5)7.71+3.98+1.49
一、口算。
2.4+0.1=7.6+1.5=0.9+0.01=5.6+0.4=
4.2-0.4=6.7-1.9=0.8-0.14=9-0.3=
4.7+0.8=8.1-1.9=0.75+0.41=7.3-0.2=
4.9+0.5=8.9+3.9=0.87+0.2=3.7+0.5=
3.9+0.8=8-0.1=0.8-0.13=3.8-0.2=
2.7+0.7=6.6-4.5=0.73+0.26=6-0.5=
5.8-0.1=8.5-4.7=0.8+0.36=5.6+0.2=
8.6+0.2=8.2-4.8=0.75-0.47=1.9-0.7=
二、混合运算。
0.7-0.47+3.49.2-0.28-4.7262.1-25.7+30
84.58-15.37+41.5965.58-27.03+53.575.68+3.61-1.34
60-(7.99-0.68)69+(25.1-9.9)5.58-3.03+2.26
一、口算。
6.1-0.3=8.6+2.6=0.77-0.05=2.6-0.7=
2.6-0.6=7.4-3.1=0.76-0.29=4.3-0.9=
6.2+0.9=8.2-3.9=0.83+0.42=6.6-0.8=
5.4+0.2=7.3-2.5=0.69+0.24=6.6-0.8=
4.6-0.7=6.7-1.7=0.77-0.36=6-0.8=
1.9+0.2=7.4+3.1=0.9-0.4=5.5+0.8=
5.1+0.4=6.4-2.9=0.71+0.25=7.2+0.1=
5.6+0.8=6+4.4=0.78-0.31=4.9+0.4=
二、混合运算。
0.76-0.25+8.66.5-0.11-0.8937.8+10.5+23.3
77.31+34.18+10.368.44+36.57+70.298.39+5.46-2.08
90-(1.92-0.48)75.7-(17+5.4)7.05-4.67+1.02
一、口算。
3.2+0.6=7.3-0.9=0.62-0.26=3.3+0.5=
2.2-0.3=8+3.5=0.78+0.21=3.8-0.1=
2.7+0.1=8.4-4.3=0.63+0.34=6.9+0.6=
1.6-0.8=6.2-1.9=0.65-0.12=7.2-0.9=
1.1-0.2=6+4.5=0.88-0.05=2.1-0.1=
3.3-0.7=8.1+0.4=0.77-0.39=2.3+0.1=
3.9+0.7=9-2.9=0.82+0.02=5.9+0.5=
7.4+0.7=7.9+1.5=0.69+0.01=5.5-0.5=
二、混合运算。
0.76-0.23+0.35.5-0.66-1.3453.4-37.2-12.7
83.36-37.6+84.2280.9+11.69+71.356.23+3.12-2.38
40-(2.07+0.98)76.6-(21.9+2.4)8.62+1.34+5.12
一、口算。
3.2+0.5=7.9-0.1=0.61-0.04=6.5+0.9=
2.9-0.3=8.6-1.6=0.61-0.32=4.9+0.2=
5.3-0.2=6.5+2.7=0.64-0.13=2.3+0.6=
8.7-0.8=7.8+1.5=0.88+0.38=8.3+0.4=
7.9-0.2=6.8+4.6=0.67+0.02=7.6-0.6=
7-0.5=7.3-4.5=0.89-0.03=5.3+0.3=
6.9-0.5=8.9+4.4=0.73+0.43=6-0.7=
8.1-0.9=6.4-2.2=0.81-0.39=3.3-0.9=
二、混合运算。
0.9-0.07+6.28.7-0.72-3.2841.1+21.9-15.1
61.87-35.52+96.9970+42.6+59.369.16+5.44+1.53
90-(9.57-0.53)80.8-(13.1+4.1)6.4+1.22-4.15
一、口算。
4-0.8=8.2+3.2=0.9+0.17=4.5-0.5=
5.5-0.3=6.5+2.8=0.75-0.21=4.4-0.2=
8.7+0.3=8.6+1.7=0.87-0.43=7.4+0.7=
1.7+0.5=9+1.5=0.79-0.33=3.8-0.1=
4.4+0.8=6.7-0.3=0.82-0.39=6.2-0.5=
5.7-0.6=7.4-2=0.75-0.13=7.6-0.3=
6.8+0.1=7.1-3=0.66+0.48=7.3-0.3=
1-0.7=7+2.8=0.61+0.45=2.9+0.7=
二、混合运算。
0.65+0.11+0.47.2-0.87-2.1380.7-20.7-34.9
85.62-22.65+72.9783.31-15.85+44.94.82-2.11+2.09
80-(1.46+0.91)96.6-(20.4+3.5)9.32-4.85+1.77
一、口算。
6-0.2=7.7+3.1=0.81-0.18=6.4+0.5=
1.5+0.1=7.8+3.6=0.69-0.48=8.3+0.9=
1.9+0.7=6.4+0.5=0.65+0.35=2.5-0.7=
6.3+0.5=6-2.3=0.75+0.39=8.2+0.4=
7.1-0.1=7.8-2.2=0.72-0.07=8.4+0.5=
7.2+0.2=8+0.3=0.73+0.05=8.3+0.5=
1.5+0.9=7.9-2.8=0.86+0.3=9-0.1=
5.6+0.3=6.8+2.2=0.82-0.46=6.6+0.4=
二、混合运算。
0.62-0.45+4.67.3-0.87-3.1358-14.2+34.8
73.32+23.44+95.1964.88-29.69+13.276.03+4.53-1.02
60-(3.44-0.34)96.9+(17.1+5.1)3.8-1.82+1.93
一、口算。
2.6+0.2=6.6-1=0.63+0.33=8.6+0.6=
8.2+0.6=7.7-4.5=0.63-0.02=2.3+0.2=
4.1-0.1=6.7+2.4=0.71-0.05=2.7+0.3=
7.3+0.8=7.1+4.4=0.79-0.46=5.2+0.9=
5.8-0.6=6.4-2.8=0.81-0.01=4.4+0.8=
1.7+0.3=6.3+0.2=0.86+0.24=4.5+0.7=
3.6-0.6=6.1+4.5=0.69-0.29=5+0.3=
3.3+0.7=6.4-2.7=0.65+0.31=4.6+0.7=
二、混合运算。
0.64+0.11+1.88.8-0.34-0.6669+47+21.7
64.2-34.09+56.0681.24+17.73+65.336.17+3.06+1.13
60-(6.28-0.49)73.9+(19.9-8.1)5.12+1.27-2.41
一、口算。
4.6+0.3=8.9-1.2=0.77+0.04=4+0.3=
4.2+0.8=7.3-0.2=0.64-0.45=1.1+0.5=
3.5+0.7=8.5+1.5=0.86+0.21=7.5-0.2=
5.6+0.3=7.7-1.3=0.8+0.08=1.7-0.5=
1.1-0.7=8.9+3.1=0.7-0.03=8.1+0.5=
8.8+0.5=6.8-1.5=0.71+0.24=1.2-0.3=
7.6+0.8=8.8-1.4=0.7+0.25=3.1+0.9=
5.6-0.9=7.2+4.5=0.73+0.09=8.1+0.4=
二、混合运算。
0.8-0.28+6.59.6-0.19-0.8151.4-34.2+14.7
71.71-25.32+65.5881.49+30.06+40.018.28+3.44+1.07
50-(8.28-0.81)69.7-(22.9-3.8)4.31+1.51-1.02
一、口算。
2.2-0.3=6.1+2.6=0.71-0.21=4.8+0.6=
3.4+0.4=8.1-2.9=0.62+0.24=1.8-0.4=
5.3+0.1=6.5+2.8=0.83+0.47=6.9-0.5=
8.1-0.1=8.6+2.5=0.74+0.19=1.3+0.2=
1.4-0.1=7.8+4.5=0.88+0.47=1.3+0.2=
4+0.1=6.9+4.9=0.76-0.36=8.2+0.1=
6.3+0.1=8.3+1.4=0.75-0.07=7.5-0.9=
4.7-0.2=8.2+4.1=0.66-0.45=2.8-0.8=
二、混合运算。
0.76-0.07+9.39.7-0.78-2.2269.9+25.2-29.7
71.57+26.03+99.8487.88-29.73+33.815.23+2.24-2.14
80-(9.44-0.74)96.9+(10.1+9.5)7.67-1.68-1.78
一、口算。
5-0.8=8.5+3.2=0.74+0.07=4.9-0.5=
2.8+0.5=6.3-1.9=0.63+0.1=2+0.6=
5.1+0.8=6.3+3.3=0.77+0.48=3+0.2=
6.6-0.9=8.1-0.4=0.77-0.44=2.8+0.5=
5-0.7=8.4+2.9=0.67+0.4=4.3+0.5=
1.4-0.1=8.9-1.1=0.89-0.18=4.7-0.7=
8.7+0.8=7.8+3.9=0.84-0.35=1.9-0.2=
8.4+0.8=6.3-1.3=0.75+0.39=1.2-0.4=
二、混合运算。
0.68-0.27+6.47.1-0.51-1.4972.1-20-23.7
73.36+25.86+57.1572.54-19.33+73.367.21+2.22-1.24
50-(2.07+0.1)63.8-(21+4.6)8.48+5.07+2.39
一、口算。
7.1+0.8=6.6-4.4=0.87-0.07=8.4+0.6=
2.1+0.8=7.2+3.5=0.83-0.08=2.6+0.4=
7.5+0.1=7.9-3.4=0.83+0.45=8.7+0.4=
6.8-0.6=6.5+0.9=0.62+0.27=1+0.4=
6.3+0.1=9-2.2=0.77-0.08=1.5-0.9=
8.9-0.4=7.9-1=0.87+0.37=1.8+0.8=
4.1+0.8=8.1-4.4=0.8-0.25=6.4-0.6=
4.7-0.5=6.2+3.1=0.76+0.14=5.7-0.5=
二、混合运算。
0.81+0.36+3.17.9-0.14-4.8693.2-27.4+49.6
66.2-16.34+38.4871.81-31.02+74.523.77+2.24-1.43
50-(5.44-0.49)67.5-(26.1+1.6)9.04-3.11-3.44
一、口算。
8.5-0.2=8.9-3.9=0.86+0.16=2.1-0.9=
5.6-0.5=8.1+1.7=0.71+0.37=3.9-0.8=
1.8+0.5=7.7-0.8=0.69+0.17=2.6+0.1=
4.2+0.5=7.1+3.9=0.71-0.33=6.9+0.9=
6+0.6=7.8-1.7=0.71-0.21=6.9-0.4=
8.7-0.4=8.7+1.7=0.67-0.25=6.1-0.9=
7.4-0.2=6.5-2.1=0.71-0.05=3+0.6=
3.8+0.3=7.3-1.4=0.62+0.3=1.1-0.8=
二、混合运算。
0.79-0.19+1.45.1-0.83-4.1737.9-18.1+12.9
73.83+17.87+80.9974.91-11.3+92.496.31-4.07+1.19
80-(2.4-0.9)82.7-(26.3-5)8.09+5.93+2.05
一、口算。
2.7+0.8=6.3+4.5=0.62-0.09=2.6-0.5=
3.2+0.5=7.9+4=0.73-0.05=8.4+0.6=
6.
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