四年级数学下册小数加减法混合运算专项练习58.docx
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四年级数学下册小数加减法混合运算专项练习58.docx
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四年级数学下册小数加减法混合运算专项练习58
一、口算。
8.9-0.1=9+4.8=0.88+0.22=7.7+0.8=
2.6+0.8=8.6-2.9=0.71-0.03=1.1+0.8=
8.7+0.9=8.5-1.4=0.9-0.35=8.6-0.4=
8.8-0.2=8.5-2.7=0.72-0.21=5.4+0.5=
4-0.6=6.8+1.5=0.77+0.23=6.7+0.1=
3-0.1=8.1+4.9=0.64-0.34=3.2-0.3=
3-0.8=7.7-3.6=0.64+0.18=4.5+0.7=
7.3-0.1=7.8-0.9=0.77+0.02=1.6+0.6=
二、混合运算。
0.75-0.18+0.36.9-0.89-0.1138.7-11.1+13.6
87.18+19.37+20.6671.35-23.46+78.787.47-1.11+5.92
90-(5.14+0.96)81.1+(29.8+8.3)9.86-4.41-2.75
一、口算。
7-0.9=8.2+4.3=0.78-0.13=2.4-0.8=
5.3-0.7=8.7+4=0.72-0.13=3.9+0.5=
7.7-0.6=7.9-2.4=0.74+0.19=8.6-0.6=
8.8-0.6=9-4.4=0.74-0.17=1.3-0.8=
2.7+0.8=6.4+3.2=0.71-0.04=1.5-0.4=
3.9+0.9=7.2+2.6=0.7-0.03=4+0.3=
6.2-0.4=6.5+4.5=0.68+0.02=7.7+0.9=
8.2+0.7=8.9-0.5=0.87+0.1=4.9+0.4=
二、混合运算。
0.68+0.48+4.46.8-0.19-1.8146.3+25.8+18.1
81.94+36.06+12.5576.55+48.79+10.055.8-2.97+2.55
60-(5.44+0.72)81.9+(26+6.4)8.85+1.49+5.47
一、口算。
6.3+0.8=7.1-0.7=0.78+0.14=6.7-0.4=
4.5-0.1=6.6+0.4=0.89-0.42=3.3-0.6=
7.1-0.9=6.3+2.6=0.85-0.29=3.7+0.1=
3.9+0.7=8.3-1.1=0.79-0.39=3.6+0.9=
2.1+0.8=7.1-1.1=0.72+0.11=8.9+0.2=
6.6-0.4=6+0.6=0.83+0.35=1.8+0.1=
8.5-0.4=7-0.5=0.87+0.21=5.8+0.4=
5.6-0.3=6.3+4.1=0.86+0.18=1.3-0.3=
二、混合运算。
0.84-0.38+6.67.6-0.72-3.2845.4+13.7+14.3
76.81-32.76+65.4975.77+48.67+74.763.94+1.46+1.09
40-(3.15-0.68)67.1-(21-9.6)3.52+1.58+1.57
一、口算。
8.5+0.4=8+0.7=0.7+0.18=7.9+0.5=
1.5-0.1=6.6+1.4=0.72+0.26=1.3-0.1=
4.8+0.5=8.3-0.2=0.85-0.05=3.4-0.3=
1.1-0.3=6.2+1.5=0.73+0.1=1.3+0.7=
6+0.6=9-1.1=0.66-0.43=2.3-0.2=
2.6+0.6=7.2+2.7=0.64-0.15=3-0.9=
3.8-0.3=8.3+3.2=0.88-0.29=3.5-0.3=
6.4-0.4=7.5-3.2=0.76+0.33=6.6+0.8=
二、混合运算。
0.64-0.32+1.69.3-0.82-2.1863.3+46.4-12.5
75.94+18.07+14.7686.24+19.54+49.585.1+3.55+1.04
90-(2.6+0.7)83.8+(14.9-8.6)6.16+3.89-2.23
一、口算。
5.1+0.5=6.3+2.6=0.61-0.4=2+0.7=
2.7-0.5=7.7-2.9=0.89-0.01=7.5+0.5=
3.8-0.4=8.3+3.9=0.9+0.45=1.5-0.2=
8.5-0.7=8.6-1.6=0.73+0.34=1.8+0.1=
1.2-0.8=8.5-0.9=0.82+0.31=5.2+0.2=
4.1-0.8=7.4+2.8=0.84+0.48=7.3-0.2=
3.4+0.6=8.9+1.1=0.65+0.48=5.3-0.5=
4.1+0.2=6.3+4=0.81-0.2=4-0.8=
二、混合运算。
0.68+0.03+88.6-0.63-3.3746.9+31.2-14.8
73.55+34.07+51.9188.11-17.55+44.634+2.27-1.41
20-(3.19+0.77)94.3-(14.8-9.1)5.59-1.45-1.91
一、口算。
8.4-0.4=6.8-2.6=0.84+0.04=2.1-0.1=
7.2+0.2=6-2.6=0.74+0.33=1.1-0.2=
1.6+0.2=8+3.6=0.6-0.38=8+0.2=
1.4-0.1=6.1-0.2=0.85+0.48=1.5-0.8=
2.8+0.3=6-3.3=0.7-0.36=8-0.3=
6.7-0.3=7.1+4.9=0.71-0.2=6.4+0.1=
8.9-0.5=8+2.2=0.74-0.27=1.8-0.1=
2-0.3=6.1-2.5=0.89-0.49=8.6+0.7=
二、混合运算。
0.7+0.43+3.67.6-0.53-1.4793.2-64.2-19.1
73.55+17.25+33.977.16+23.74+44.17.99-2.45+1.61
40-(7.34-0.17)88.8-(12.8-9.8)7.3-3.57-2.65
一、口算。
7.9-0.7=7.4+0.2=0.79-0.2=5.5+0.3=
5+0.5=7.6+0.2=0.8-0.37=7.2+0.5=
8.5-0.4=7.4+1.8=0.88-0.03=6.7-0.7=
3.5-0.8=8.5-0.5=0.66-0.41=6.1-0.3=
3.9+0.2=7-1.4=0.88+0.3=4.9-0.5=
6.7+0.4=7.2+2.7=0.9+0.32=2.8-0.3=
3.2-0.2=6.1+3.2=0.78+0.33=6.1+0.3=
2.6+0.8=6.4+2.2=0.78+0.18=3.2+0.6=
二、混合运算。
0.7-0.02+2.66.4-0.67-4.3353.1+11.3-28.7
83.88-16.63+38.0965.58+46.98+63.148.74+3.51+2.62
60-(9.74+0.29)75.5+(28.5-7.8)7.72-2.24-5.16
一、口算。
5.2+0.5=6.8+2.6=0.81-0.3=4.6-0.2=
4.1+0.6=8.3+2.6=0.63-0.39=5.4+0.3=
1.7+0.9=6.1-3.1=0.89-0.11=7.4+0.1=
5.9+0.9=7-2=0.78+0.39=6.4-0.2=
5.1-0.1=7.3-0.5=0.89-0.47=5.6-0.4=
7.9-0.6=8.4+3.5=0.86-0.21=3.5-0.6=
2.5+0.2=7.1-4.4=0.84+0.42=7.8-0.1=
3.7+0.2=6.9-1.8=0.63-0.04=1.4+0.2=
二、混合运算。
0.65-0.19+7.15.6-0.84-0.1677.1-48.8-24.3
77.8+39.24+36.1360.6-12.35+80.86.74-3.71+2.64
60-(9.67-0.87)83.3+(10.2+7.9)5.55-1.47-2.75
一、口算。
2.8+0.9=8.9+4=0.82-0.37=1.4-0.8=
8+0.8=6.2+4.2=0.6+0.42=7.8+0.7=
7.2+0.6=7.9+4.2=0.75+0.41=7.2+0.6=
2.9-0.5=8.3+0.9=0.79-0.21=1.7-0.1=
7.1-0.3=7.6-2.1=0.75-0.19=3.7+0.4=
3.5-0.5=8.1+4.9=0.64+0.35=1.9+0.9=
1.3+0.2=6.3+4.5=0.8+0.23=6.1-0.7=
5+0.6=6.7+4.3=0.77-0.12=3.3+0.5=
二、混合运算。
0.74+0.2+3.75.5-0.5-0.566.6-28+30.6
61.7-47.15+81.669.68+44.92+83.878.76-5.26+3.11
80-(2.3-0.13)82.9-(23.2+1.4)5.87-2.56-2.31
一、口算。
7.7+0.7=6.8-3.9=0.71+0.05=2.4+0.6=
4.8-0.6=7.6+4.1=0.86-0.02=7.8-0.6=
3.6-0.1=8.5-4.8=0.84-0.38=5.2-0.2=
4.6+0.3=6.1+2=0.83-0.37=4.8+0.4=
7.3+0.6=8.7-3.8=0.73-0.29=8.4-0.1=
1.7-0.8=6.8-1.8=0.69-0.31=7.7-0.7=
2.9+0.7=8.1+4.1=0.61+0.48=2.3-0.5=
5.8-0.5=6.9-0.5=0.62-0.15=2.3+0.4=
二、混合运算。
0.62+0.05+5.69.7-0.47-3.5374.1+58.7-12.9
88.83+11.22+76.1977.35+23.7+30.349.54-1.1+4.46
30-(2.95-0.71)99.3-(14.3+2.9)4.05+2.28+1.38
一、口算。
3-0.7=6.6+3.3=0.82+0.26=8.8-0.1=
3-0.2=6.8-1.3=0.88+0.4=1.4-0.1=
7.9+0.3=8.1+1.6=0.61-0.42=5.6-0.4=
6.3+0.4=8.2+3.6=0.6+0.08=7+0.4=
3.5+0.8=7.4-0.7=0.74+0.22=2.8-0.1=
6.2+0.7=6.5-2.4=0.8-0.13=3.7+0.2=
1.5+0.4=7.3-0.5=0.9-0.19=2.7-0.5=
7.1-0.7=8.6+0.5=0.82+0.27=3.6-0.5=
二、混合运算。
0.62+0.05+7.38.3-0.48-1.5273.3-35.2-31
76.86+36.62+33.0463.31+23.51+18.786.45-1.21+3.27
60-(2.5+0.2)96.4+(18.7-8)5.29-1.68-1.39
一、口算。
4+0.9=8.5-0.2=0.87-0.42=7.8+0.6=
3.9+0.5=7.5+4.4=0.73+0.27=1.7+0.8=
5.5-0.8=7.9+0.6=0.66-0.31=8+0.5=
2.3-0.2=7.5+1.3=0.75-0.41=5.8+0.9=
4.1-0.4=7+3.3=0.87+0.38=4.1+0.5=
6.8-0.1=8.7+1.5=0.61-0.05=4.7+0.3=
1.9-0.1=8.5+2.9=0.69+0.47=7.8+0.1=
6.1-0.9=8.1+0.5=0.83-0.11=7.2+0.5=
二、混合运算。
0.74+0.04+0.29.6-0.27-2.7376.9+34.3-41.5
73.96+34.29+25.2689.96+30.4+63.199.59-7.43+1.58
70-(7.52+0.25)92.5+(13.6+8.5)5.57+1.02-2.89
一、口算。
3.2-0.9=7-0.8=0.9-0.03=5.1+0.5=
5.9+0.6=7.9+2.3=0.85-0.09=8.7+0.4=
7.7-0.2=7.6+1.7=0.7-0.27=1.5+0.4=
1.3+0.4=8.1+1.6=0.68-0.26=2.4-0.8=
3.5+0.3=7.8-4=0.76-0.19=8.8-0.6=
5.5+0.8=8.4+3.2=0.89+0.21=2.9-0.7=
2.3+0.4=8.6+2.9=0.79-0.43=5.9+0.2=
7+0.9=6+2.3=0.75-0.26=4.6+0.6=
二、混合运算。
0.72+0.17+0.57.7-0.65-2.3596.1-61.5-33
75.38+22.95+90.5977.88-16.3+21.564.83-2.64-1.65
50-(1.25+0.56)75.6+(10.9+3.4)5.77+4.22+1.08
一、口算。
2.2+0.8=8.4+2.7=0.89+0.06=6.2+0.2=
8.9+0.3=7+1.5=0.64+0.32=8.8+0.7=
2+0.2=6.4-0.1=0.84+0.02=3.5+0.7=
5.2-0.2=7.7+4.2=0.88+0.41=3.4-0.5=
8.5-0.6=6.2-2.3=0.79-0.03=6.9+0.8=
8.8+0.6=8.1+2.1=0.9-0.03=6.3-0.3=
6.7+0.5=8.8+1.6=0.9-0.23=6.5-0.1=
5.7+0.3=6.4-1.5=0.63-0.42=1.5+0.8=
二、混合运算。
0.84-0.1+7.45.2-0.31-0.6971.1-21.9-17
62.61-41.06+30.4172.53+18.36+52.974.28-1.01-2.62
90-(9.62+0.13)78.6+(28.7+1.6)7.69+2.95-4.65
一、口算。
3.8-0.8=6.9-3.7=0.77+0.31=5.2+0.2=
8.5+0.4=8+2.7=0.73+0.36=3.3-0.2=
5.1+0.5=8.8+0.1=0.81+0.22=5.7+0.9=
2.6-0.7=8.3-4.3=0.71+0.11=7.9+0.6=
6.8-0.4=8.3-4=0.76-0.06=3-0.9=
4.3+0.3=6.5-1=0.82-0.48=3.5+0.2=
5.9-0.3=9-1.8=0.61-0.18=3.8+0.1=
4.8+0.2=8.7+2.1=0.6-0.1=1.4+0.8=
二、混合运算。
0.61+0.06+78.5-0.18-2.8291.9-32.8-45.1
75.28+47.48+34.4260.52+29.46+13.469.91-3.13+6.11
70-(1.17+0.58)81.9+(15-1.6)8.55+4.1+4.33
一、口算。
7.5-0.2=6.7-2.5=0.61-0.13=7.4-0.9=
1.5-0.5=8.2+2.6=0.79-0.11=8.2+0.4=
6.4-0.2=8.8+3.4=0.63+0.17=2+0.8=
1.6-0.7=8.2-4=0.66-0.48=6.9-0.8=
3.3+0.5=7.5+3.6=0.66-0.33=8.1+0.5=
2-0.7=6.2-0.5=0.82+0.46=8.2-0.7=
3-0.3=6.2+3.8=0.72-0.4=3.5+0.2=
5.4+0.4=6.4+2.1=0.66-0.02=7.8+0.7=
二、混合运算。
0.68+0.22+35.8-0.78-1.2262.3+46.6+10.8
67.26-21.16+19.2481.37-29.63+59.925.5-1.18+2.47
80-(6.93-0.14)82.6+(17.8+7.6)6.89-3.64-1.63
一、口算。
6.4-0.6=6.1-2.8=0.74+0.33=8.8-0.4=
6.3-0.7=8+4.7=0.73-0.37=5.3-0.9=
2.5+0.2=7.1+4.5=0.8+0.24=4.8+0.7=
3.6-0.5=7.3+0.5=0.6-0.05=8.2+0.4=
2.4+0.8=7.5+0.1=0.79-0.08=2.6+0.1=
8.8-0.6=7.8-1.5=0.63-0.17=1.8+0.7=
6.3-0.4=6.8-2=0.89+0.37=6.4+0.5=
5.5+0.1=8.3-1.6=0.68-0.41=7-0.4=
二、混合运算。
0.82+0.02+4.69.4-0.84-4.1653.1+11.6-14.5
79.88-20.16+50.8876.35-41.57+35.888.42+1.84-2.5
40-(4.29-0.69)93.1+(13.4+8.2)7.17-3.94+2.78
一、口算。
8.9+0.7=6.8-3.3=0.67-0.26=8.4-0.8=
2.7+0.1=6.1-3.5=0.65-0.06=3.7-0.5=
3.6+0.7=6.2+3.2=
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