人教版四年级数学下册小数加减法混合运算专项练习题34.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34
一、口算。
5.9-0.4=7-1=0.61+0.38=4.1+0.5=
3.6+0.8=7.9+2.8=0.8+0.27=4.7-0.2=
1.5+0.7=8.2-1=0.85+0.43=7.1+0.1=
5.7+0.3=6.5-1.9=0.84-0.08=5.6-0.8=
4.8-0.1=8.5+1.5=0.85-0.17=5.3+0.9=
1.5+0.5=8.7+1.8=0.7-0.17=6.8-0.3=
5.6+0.4=6+4.1=0.68+0.18=2.6-0.7=
7-0.2=6.5-0.1=0.74+0.1=7-0.6=
二、混合运算。
0.72-0.2+2.58.3-0.8-1.241.7+26.4-12.4
78.42+16.74+51.4179.44-12.72+20.645.24+1.39-2.23
40-(4.54+0.38)60.7+(15.9+5.9)7.71+1.1-6.56
一、口算。
5.8-0.8=8.9-0.4=0.75+0.26=4.8+0.8=
1.5-0.6=8-1.4=0.72+0.23=7.5+0.4=
5.3+0.1=8.2+2.6=0.61+0.21=5.5+0.2=
4.8-0.3=7.7-2.4=0.77-0.05=4.7+0.3=
8.4-0.9=8.9-0.6=0.65-0.3=4.9-0.2=
8.6-0.4=7.6-4.6=0.72-0.24=8+0.7=
3+0.5=7.5+0.3=0.9-0.03=4.8-0.7=
2.1-0.7=6.1-0.7=0.66-0.18=6.3-0.5=
二、混合运算。
0.75+0.22+1.49-0.48-1.5274.8-26.8+11.3
65.96+17.77+12.0963.76-31.06+40.756.3-2.47+1.69
50-(4.97+0.77)71.5+(26.8-7.4)6.98+2.69+3.59
一、口算。
5.7-0.6=7.1+2.5=0.9-0.18=3.4+0.4=
1+0.1=7.9-1.6=0.63+0.45=7-0.8=
3.8-0.4=6.7+1.1=0.81+0.08=4.9-0.9=
5.2-0.3=7.8-0.7=0.62+0.12=6.7+0.6=
2.8+0.8=6.2+4.4=0.76+0.4=2+0.5=
7.6-0.3=9+4.9=0.84+0.39=2.3-0.2=
8.3+0.1=6.8-1=0.63-0.25=2.6-0.4=
7.9-0.1=7.2-4.4=0.85+0.49=7.8+0.1=
二、混合运算。
0.6-0.1+2.15.6-0.29-3.7163.9+16.8+22.4
66.88+38.17+97.4461.43-31.81+99.346.72+2.79+1.92
30-(4.29+0.33)98.8+(24.3-2.8)7.29-4.07-1.04
一、口算。
6.3+0.8=7+1.7=0.77+0.18=8.4+0.7=
6.9-0.8=7.9+1.1=0.69-0.16=8-0.9=
8.3-0.3=8.6+1.4=0.64+0.2=8.9-0.7=
3.6+0.4=8+0.9=0.81+0.36=5.1-0.3=
1+0.2=6.8+4=0.8+0.27=3.4+0.4=
7.3-0.7=8.1+1.9=0.61-0.04=5+0.7=
7.3+0.2=6.4+3.4=0.63+0.3=1.6-0.4=
1.1-0.4=8-4.5=0.76+0.18=2.3+0.4=
二、混合运算。
0.72-0.42+3.78.7-0.66-0.3492.9-60.4-10.3
67.62+15.37+79.5288.81+36.65+96.896.25+4.54-1.36
50-(5.63-0.98)85.2-(23.3+7.6)9.19-3.24+4.86
一、口算。
4.2+0.5=6.2+4.1=0.81+0.37=2.4-0.2=
7.5-0.4=6.7-1.1=0.65+0.32=7.6-0.9=
1.3+0.2=7.6+4.1=0.71+0.26=1.7-0.6=
2.8+0.7=8.9+4.7=0.9-0.02=8.1-0.2=
1.4-0.9=7-0.1=0.71-0.18=7.1+0.3=
7.3-0.3=8.6+3.4=0.61-0.45=2.2+0.7=
3.2-0.1=8.1-2.1=0.85-0.23=8.2-0.4=
8.8+0.8=7-4.2=0.63-0.49=7.7+0.3=
二、混合运算。
0.76-0.29+9.67-0.47-3.5339.2-21.4-11.9
76.86-32.96+77.0764.75-42.13+32.19.86-3.93-2.57
20-(4.53-0.12)61.9+(23.8+2)5.55-2.33+3.19
一、口算。
6.5+0.9=7.1+4.2=0.89-0.17=2.4+0.2=
7.1-0.2=8.8-4.9=0.66+0.06=2.1-0.5=
8.1-0.3=8.5+4=0.87+0.19=4.6-0.1=
8.9-0.4=8.9-1.9=0.85+0.45=2.1-0.4=
6.6-0.4=8+1.3=0.72+0.35=3.6-0.2=
6+0.7=8.9-0.8=0.83+0.13=2.6-0.8=
1.5+0.7=8+2=0.7-0.17=4.8-0.7=
7.9-0.1=7.9+4.6=0.84+0.44=4.7+0.6=
二、混合运算。
0.75+0.22+2.76.9-0.82-4.1874.6-56.8+17.8
79.04+17.4+26.8284.98-38.05+51.959.18-5.87-1.57
50-(4.33+0.37)77.4-(28.4-1.4)8.51+3.54+3.49
一、口算。
3.5+0.1=8.5+3.4=0.83+0.12=8+0.4=
5.2+0.6=8.1-0.1=0.87+0.48=8-0.8=
1.1+0.1=8+4.1=0.83+0.15=2.7-0.3=
5.4+0.8=7.4-2.8=0.88-0.2=5.5+0.2=
3+0.5=8.8-2.4=0.79+0.45=7+0.5=
2.4+0.9=7.7-4.2=0.83-0.18=1.2+0.9=
4.6-0.9=7.6+0.7=0.67+0.07=1.4+0.9=
2.6+0.2=6.2-4=0.77-0.49=4.2+0.9=
二、混合运算。
0.77+0.05+1.49.2-0.63-4.3798.4-82.2-10.4
69.98-14.84+13.6979.31-18.07+60.388.74+2.54-5.35
30-(3.98-0.11)77.5+(21.8-4.1)7.6-1.33+2.03
一、口算。
5.3-0.4=6.5+3.8=0.78+0.07=7.3-0.7=
4.3-0.6=7.9-4.1=0.67+0.24=6.8-0.4=
7.9-0.4=6.4-2.4=0.61-0.34=1.9-0.4=
1.4+0.6=8.5-4.2=0.65-0.49=2.6+0.8=
4.1+0.4=6.2-3.8=0.81-0.08=1.3+0.9=
7.3+0.6=7.4-3.8=0.71-0.08=4.4-0.5=
7-0.3=6.1-1=0.8+0.38=7.2-0.5=
1.6-0.7=7.4+4.2=0.64-0.32=1.6+0.5=
二、混合运算。
0.65-0.4+5.27.1-0.76-0.2492.1+11.4-67.4
65.18+28.4+67.9873.09-29.32+45.495.25-2.5+1.82
50-(2.15-0.42)66.7+(29.2+5.5)4.66+1.76-2.51
一、口算。
4.6-0.7=6.6+4.4=0.64-0.26=8.5-0.1=
4.6-0.9=7.4+3.2=0.63+0.49=7.4+0.3=
1.6-0.8=7.5+3.5=0.87-0.4=1.3-0.7=
2.1+0.2=6.9+1.1=0.65-0.38=3.5+0.3=
2.6+0.9=7.1+0.2=0.63-0.01=5.3+0.9=
2.2+0.7=8.5-2.2=0.73+0.39=1.5+0.8=
2.5+0.3=8-1.6=0.77+0.09=7.8-0.6=
2.1+0.8=6.7+3.5=0.75+0.35=2.8-0.5=
二、混合运算。
0.84+0.13+3.55.2-0.18-3.8236.7+14.7+16.6
63.18+12.76+71.878.18-18.25+89.144.69-2.12+2.1
30-(7.3-0.69)88.7+(20.1-3.5)3.68+2.14+1.12
一、口算。
1-0.9=6.6-0.4=0.78-0.46=4.2+0.5=
3.9-0.8=8.4-4=0.64+0.32=5.8-0.9=
7.7-0.6=7.5-2.9=0.89-0.17=8.8+0.2=
8.5-0.6=8.9-3.1=0.81-0.03=6.2-0.3=
4.2+0.5=8.3-1.5=0.69+0.15=3.9-0.2=
2.3-0.6=6.3-4.4=0.7-0.27=8.4-0.9=
8.8+0.3=8.2+3=0.87-0.44=4.5+0.2=
8.4-0.6=8.3+0.7=0.67-0.48=8.4+0.9=
二、混合运算。
0.85-0.43+7.79.4-0.83-4.1753-32.9+15
73.43-34.96+29.0162.5-38.77+90.246.54-1.68-2.62
70-(5.81+0.27)65.6-(11.2+5.4)4.76+1.66-1.74
一、口算。
4.4-0.4=8.7+1.6=0.72-0.25=2.1-0.3=
6.9+0.8=8.6+2.5=0.78-0.08=2.2+0.6=
6.4-0.1=6.2+0.3=0.77+0.44=1.3+0.5=
2.9-0.8=7.7+4.8=0.78+0.07=3.2+0.9=
3-0.3=6+0.9=0.77+0.44=3-0.7=
1.5+0.2=6.2-3.8=0.8+0.39=8.7+0.1=
7.4-0.3=7-2.2=0.89+0.25=5.9+0.2=
3.8+0.6=6.6-0.9=0.73+0.01=4.6-0.8=
二、混合运算。
0.87-0.37+6.16.6-0.42-1.5836.6+11.9+16.4
66.62-44.94+53.2763.07-16.11+15.037.78-4.27+1.17
40-(9.22+0.35)69.3-(11.4+6.8)7.99+1.45+2.49
一、口算。
8-0.1=6.1-2.3=0.79-0.32=8.4-0.5=
7.2-0.2=7.8+4.9=0.86-0.42=5.3-0.4=
8.6+0.9=6.4-3.3=0.71-0.22=7.4+0.6=
1.1-0.8=7.2+3.2=0.86+0.01=7.8+0.2=
8+0.4=6.4-4.2=0.63+0.11=7.9+0.8=
7.7-0.4=8.1-1.2=0.64-0.16=5.4-0.7=
3.7-0.4=7.2+1.6=0.69-0.17=3.3-0.6=
8.5-0.1=6.9-3.4=0.82+0.42=3.2+0.8=
二、混合运算。
0.76+0.06+6.77.9-0.9-0.138.4-12.5-18.6
86.6-24.64+91.0286.29-31.07+62.959.9-2.5+2.71
30-(7.86+0.32)77.7-(17.9+2.2)4.36-1.35-1.69
一、口算。
2.5-0.5=7.3+2.9=0.6+0.08=3.8-0.9=
6.2+0.7=8.9+4.4=0.6+0.48=5.6-0.1=
3.6+0.2=7.5-2.8=0.73-0.14=2.8+0.3=
5.5-0.6=7.8-1.4=0.69+0.35=4.4+0.3=
8.2+0.9=9-4.2=0.6-0.34=5.1-0.1=
5.5+0.4=8.5-1=0.82+0.18=4.3+0.4=
2.7-0.4=6-4.4=0.85+0.29=1.4+0.4=
8.8+0.9=7.8+4=0.83-0.43=4-0.7=
二、混合运算。
0.73-0.36+1.48.8-0.38-4.6276.4-24.1-24.5
64.56-47.54+66.5786.7+14.81+32.84.21+1.79-1.8
40-(3.2-0.51)91+(30-9)6.31-4.55-1.56
一、口算。
8+0.4=8.9+3.6=0.84-0.05=7.9-0.5=
6.2+0.2=8.6+3.3=0.88+0.22=5.1+0.3=
1.6+0.4=6.9+4.5=0.83-0.22=4.3+0.5=
1.7+0.5=7-2.4=0.61+0.15=1.9+0.1=
6.6-0.2=8.9-0.5=0.83-0.13=4.9+0.9=
8.2+0.2=7.9+1.7=0.88-0.16=1.2-0.8=
7.3-0.4=8.1-2.4=0.69-0.33=7.7-0.8=
7-0.7=6.5-3.2=0.78-0.32=1.8+0.9=
二、混合运算。
0.82-0.35+3.29.6-0.32-1.6873.6-34.9-14.9
71.03+38.6+44.8989.22-39.61+65.116.34+1.35-2.24
30-(9.37+0.47)88.3-(22.2+6.7)7.57+1.27-4.32
一、口算。
4.2-0.6=8.1-0.8=0.82+0.36=3.6-0.5=
6.8+0.2=6.4+4.4=0.8-0.18=6.8+0.4=
6.3-0.6=6+1.9=0.88+0.23=6.3-0.9=
8+0.2=6.1-2=0.9+0.35=2.5-0.1=
4.4+0.1=7.6-3=0.88-0.28=5.7-0.7=
5.7+0.1=6.2-2.9=0.87+0.35=2.2+0.1=
8.1-0.5=6.8-4.8=0.7-0.23=2.5+0.3=
6.2-0.3=6.8+4=0.76-0.25=1.6-0.3=
二、混合运算。
0.84-0.42+7.48.8-0.83-4.1789.6-42+24.8
88.56-39.9+24.562.02-29.51+28.797.03+2.75-3.72
30-(1.84+0.52)96.9-(19.6-5.1)7.03+4.74-1.46
一、口算。
4.2+0.1=8.8+0.5=0.7-0.44=7.1+0.3=
5.7-0.4=8.1+2.2=0.88+0.47=5.5+0.7=
2+0.7=8.2-0.7=0.71+0.2=1.2-0.3=
5.1+0.8=7.1+3=0.65-0.28=6.4-0.3=
7.9+0.4=6.1+3.1=0.8+0.42=6.6+0.4=
4.5+0.3=8-3.7=0.63+0.42=1.8+0.5=
8.1+0.4=7.5+1.7=0.75-0.04=3.5-0.6=
1.5-0.5=7.9-3.8=0.87-0.29=4.6+0.8=
二、混合运算。
0.85-0.05+3.67.2-0.6-1.492.3-75.4+14.2
85.66+44.05+21.6486.39-17.35+34.186.01-2.94+2.23
30-(8.01+0.97)89.1-(29+9.8)7.2+1.79+3.14
一、口算。
6.1+0.6=6-3.2=0.81+0.16=8.1-0.4=
5.6-0.3=6.3+2.4=0.81-0.16=3-0.8=
4.5-0.1=8.2+3.7=0.7+0.2=7.9-0.8=
6.9+0.8=6.4-3.1=0.79-0.42=4.3+0.8=
1.9-0.4=6.3+1.2=0.68-0.34=5-0.1=
9-0.7=8.9-3.6=0.72+0.49=1.4+0.1=
7.5+0.3=6.5-3.5=0.77+0.27=5.8+0.6=
4.3+0.2=7.7+3.2=0.8-0.21=8.4-0.2=
二、混合运算。
0.76+0.14+0.25.6-0.29-2.7194.6-61.8+25.6
82.25+39.62+99.2872.04+33.23+27.284.17-2.37-1.32
30-(4.39+0.32)99.9-(23-9.7)4.69-1.69-2.49
一、口算。
5.2+0.2=9+3.5=0.61+0.26=8-0.6=
8.9+0.7=8.3-0.4=0.71-0.17=5.5-0.7=
1-0.1=7.7+2=0.77-0.1=4.7-0.1=