人教版四年级数学下册小数加减法混合运算专项练习题22.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22.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22
一、口算。
7.9-0.2=8.3+3.9=0.83+0.24=5.9+0.3=
4.5-0.7=6.1-0.6=0.83+0.22=1.3-0.8=
6.3-0.1=6-3.9=0.88-0.01=4.4+0.2=
3.9+0.5=8.3-4.2=0.65-0.16=5.2+0.5=
1+0.8=7.5+2.1=0.8-0.12=8.2+0.5=
2.2-0.4=7.6-4.9=0.87+0.27=6.2+0.1=
3.4+0.6=8.2-2.9=0.89-0.12=4+0.5=
7-0.5=8.4+4.4=0.63-0.12=7.9+0.9=
二、混合运算。
0.82-0.25+7.67.4-0.24-4.7690.5+37.6+17.6
63.88-42+17.2270.91+18.35+86.115.48-3.63-1.24
20-(2.16-0.92)90-(15.4-3.2)8.13-3.97-2.5
一、口算。
3.4-0.4=7+0.3=0.9+0.32=4.4+0.2=
5.7-0.5=6.6+1.9=0.78-0.13=4+0.4=
5.1+0.3=6.2-1.8=0.65-0.39=8.9-0.1=
8.1+0.8=6+3.7=0.67-0.35=1.3+0.5=
4.2+0.7=8.9-0.2=0.81+0.43=1.5+0.1=
8.5-0.7=8-4.6=0.66-0.39=4.5+0.4=
7.7+0.9=7.1-1.5=0.81-0.4=5.3-0.2=
1.3-0.5=7.4+1.9=0.88+0.37=2.2+0.6=
二、混合运算。
0.69+0.26+5.48-0.33-2.6797.7+34-47.5
61.11-10.04+42.5676.82-30.75+46.364.54+1.83-2.51
60-(5.06+0.44)66.6+(14.6+9.1)7.34+5.42+1.18
一、口算。
8.9-0.8=7.2+2.3=0.65+0.36=2-0.8=
8.4-0.5=8.9+0.6=0.84+0.31=3.1-0.5=
3.3+0.3=6.3+1=0.81-0.01=5.6-0.7=
2.7-0.2=6.6+1.9=0.75-0.49=5.4-0.2=
1.8+0.4=6.4+4.7=0.7+0.2=1.7-0.6=
5.9-0.1=7-0.2=0.71-0.34=4.9+0.8=
1.8+0.4=7.9+2.9=0.72+0.13=8.3-0.3=
1.2+0.3=6.1-1.3=0.88+0.38=2.9+0.2=
二、混合运算。
0.77-0.4+7.66.7-0.34-1.6645.8-27.6+16.3
88.05+41.26+17.7984.17-30.66+16.26.72-2.01-2.68
40-(2.18-0.18)96.2-(13.6-7.2)3.75+1.69+1.87
一、口算。
3.6-0.6=6.2-1.7=0.72-0.1=8.7+0.2=
4.5+0.6=6.8+0.7=0.67+0.28=4.7-0.8=
3.7-0.8=8.7+1.7=0.87+0.37=5.5-0.3=
7.2-0.7=6.1+2.2=0.66+0.31=7-0.8=
2.5+0.4=7.8+1.3=0.8+0.47=1.8-0.9=
5.9-0.6=8.1-2=0.81+0.34=5.5-0.2=
6.9+0.5=8.2+1.3=0.86+0.4=1.9+0.5=
2+0.6=7.1+2.9=0.88+0.08=1.4-0.7=
二、混合运算。
0.73+0.29+2.29.1-0.3-1.762-14.8+36.7
81.86+46.71+78.8374.25+32.02+29.136.29-2.72-1.18
80-(1.74-0.88)68.4+(16.5+9.9)8.98-2.82-4.58
一、口算。
6.7-0.8=6.8+1.6=0.85-0.36=2.7+0.7=
7.1-0.3=8+2.9=0.62-0.16=1.8-0.9=
8-0.6=8.3-2.1=0.89+0.23=2.6-0.7=
8.5+0.7=8.8+4.9=0.79-0.42=8.1+0.8=
7.3-0.3=7+3.3=0.73+0.27=6.6-0.3=
7.5-0.8=8-4.3=0.71-0.25=9+0.1=
5.5-0.6=7.8-4=0.76-0.05=4-0.6=
4.9-0.7=9+3.7=0.75+0.31=3.1-0.2=
二、混合运算。
0.74+0.1+6.25-0.73-3.2796.7+18.1+58.1
62.42-39.11+21.874.7+38.39+56.935.16-2.83+1.64
40-(7.98+0.31)76+(13.9-1.2)9.85+6.76-1.04
一、口算。
1.2+0.7=8.7-1=0.62-0.28=5.6+0.2=
4.6-0.9=6.4-3.7=0.79+0.12=6.7+0.6=
1.2+0.4=6.4+0.8=0.79+0.08=8.2+0.6=
2.2+0.5=7.8+1.4=0.68+0.29=5.2-0.4=
2.3+0.7=6.6-0.3=0.85+0.16=7.2+0.3=
7.9+0.3=8.7+3.3=0.69+0.29=6.1-0.5=
3.3-0.1=8.9-0.3=0.63-0.3=3.6-0.9=
5.2+0.9=7.1+1.6=0.73-0.24=1.3-0.3=
二、混合运算。
0.75-0.36+8.68-0.16-1.8447.6+12.8-33.9
79.6+38.68+68.1165.06+33.41+26.959.17+1.3+5.1
60-(8.46+0.56)73-(24.7-8.7)7.3-2.29+4.27
一、口算。
1.6+0.8=7+3.6=0.75-0.45=8.6+0.6=
6+0.7=8.9+3.2=0.67-0.04=4.1+0.2=
7.9+0.8=6.5-4.6=0.82+0.36=8.9-0.8=
3.3-0.5=8.1-2.9=0.6-0.2=2+0.4=
2.6-0.7=7.6-1.1=0.82+0.23=3.6+0.3=
8.4-0.9=7.7+0.7=0.73+0.31=8.9-0.1=
3.8-0.1=6.1+4.6=0.9+0.34=3.6-0.2=
3+0.1=8.5-3.2=0.69-0.03=7.7+0.1=
二、混合运算。
0.86-0.09+4.28-0.61-0.3969.2-41.2-15.4
80.65-41.02+87.0180.3+16.29+71.695.56-1.14+3.48
70-(8.26-0.31)60.6+(17.9+6.6)4.06+2.43+1.29
一、口算。
2.8-0.6=6.9-1=0.62-0.02=2.8+0.2=
8.4-0.3=7.2-1.7=0.82-0.12=6+0.2=
4.8+0.2=8.8-4.1=0.83-0.41=8.2-0.9=
8.4+0.1=7.6+0.1=0.89-0.16=6.8+0.8=
3.3-0.6=7.8+1=0.71+0.04=2.4+0.5=
1.9+0.2=7.6+2.3=0.89-0.09=1.8+0.4=
6-0.8=8.7-2.6=0.87+0.42=6.4+0.5=
1.8-0.8=7.6-4=0.69+0.31=1.3+0.4=
二、混合运算。
0.88+0.46+2.28.6-0.86-4.1443.8+21.9+20.2
83.25+30.58+91.5567.04-46.94+47.127.59-4.41+1.35
90-(8.94-0.14)74.3-(16.1-6.8)5.76-1.92+3.38
一、口算。
3.1-0.5=6.1+4.2=0.72-0.32=6.4-0.5=
5.4-0.9=7.2+1.8=0.63-0.44=7.1-0.2=
2.6-0.2=6.1-1.7=0.86+0.48=2.2-0.9=
3.3-0.8=8.1-3.2=0.81-0.21=1.4+0.5=
2+0.5=6.1-4.1=0.83+0.25=6.3+0.7=
4.5+0.9=7.5+3.8=0.89+0.45=1.8-0.2=
8.2+0.6=8.2+1.8=0.79-0.1=6-0.9=
1.3+0.2=8.7-1.3=0.9+0.31=1.7+0.8=
二、混合运算。
0.61+0.46+5.17.5-0.19-2.8168.8+47.1-16.8
86.54+34.74+44.8360.64-33.02+84.486.89+5.07-1.07
40-(3.69+0.74)83.4-(25.8-2.6)7.61+5.99-1.1
一、口算。
1.1-0.6=7+2.6=0.76+0.38=4.5-0.6=
4.2+0.5=7.7-1.4=0.82+0.01=1.3+0.1=
7.4+0.6=7.5+0.3=0.81-0.48=4+0.9=
4.5+0.4=7.7+2.8=0.87+0.15=6.1-0.2=
8.1+0.1=8.4-1.1=0.7+0.09=2.7-0.2=
4.4+0.4=8-0.3=0.78+0.45=1.6-0.5=
3.9+0.4=6.7-3=0.89+0.43=2.6+0.4=
5.1+0.9=8.6-1.2=0.64-0.16=3.4+0.6=
二、混合运算。
0.69-0.42+2.79.6-0.73-0.2757.2-31.9-14.2
87.38-35.22+69.8484.07+36.92+69.756.74+4.79-1.86
30-(4.79+0.21)70.2-(29.7-6.3)7.26-4.75-2.09
一、口算。
8.6-0.2=8.5-4.1=0.83-0.39=6+0.3=
3.2+0.6=7.2-4=0.89+0.43=7.6+0.7=
8.8+0.5=9+1.7=0.9+0.28=6.9-0.6=
7.4-0.2=6.1+4.8=0.61-0.15=2.7-0.5=
1.6+0.4=7.5-2.4=0.64+0.46=1.8-0.8=
8.1-0.3=6.7+4.8=0.76-0.28=7.4+0.6=
3.3+0.9=7.8-3.8=0.9+0.06=4.7-0.2=
3+0.7=7-2=0.76+0.37=6.3-0.9=
二、混合运算。
0.72+0.46+2.56.5-0.32-3.6890.4-30.6-52.6
67.91-41.06+69.2777.18+23.31+46.236.19+4.52+1.04
50-(6.74+0.75)78.1+(28.6-9.8)6.15-1.42-4.14
一、口算。
5.8+0.8=7.2+3.5=0.7-0.4=8.9-0.3=
8.3-0.1=8.9+4=0.74-0.04=7.9-0.2=
3.1+0.6=8.7+3.3=0.74+0.14=2.9+0.6=
5.1-0.4=7.8+2.9=0.63+0.06=5.9+0.5=
8.8+0.4=6-3.5=0.86-0.4=4.3+0.2=
8.5+0.9=7-1.8=0.67-0.33=1.3+0.8=
2.5-0.4=6.6-1.5=0.74+0.05=6.7-0.5=
7.7-0.6=7.5-2.3=0.72+0.4=4.3-0.2=
二、混合运算。
0.89+0.41+2.99-0.88-3.1263.4+44.2+10.4
88.62+23.57+21.6767.15-13.21+29.364.85-1.86-2.74
50-(5.86+0.18)97.4+(26.4-9.2)9.99-8.43+1.38
一、口算。
6.2-0.6=6.7+1.4=0.88-0.19=3.5-0.8=
4.4-0.4=7.6-1.8=0.88-0.42=4.5+0.3=
5.6-0.4=7.6-1=0.61-0.12=5.1-0.3=
8.3-0.5=7.2+2.6=0.75+0.47=8.5+0.3=
2.8+0.1=8.3-2.8=0.83-0.17=3.7-0.3=
2+0.4=8.9+4.4=0.76+0.07=4.2+0.8=
2.3-0.1=7.8-2.4=0.89+0.45=1.7+0.5=
5.3-0.7=8.1-2.1=0.9-0.09=1.9-0.4=
二、混合运算。
0.84+0.37+0.58.2-0.36-4.6487.8-32.6-47.3
68.83-40.34+24.3189.46+29.51+82.236.61+2.52-1.98
80-(5.77-0.75)93.8+(22.1+8.7)3.5-1.89+1.11
一、口算。
2.9-0.8=7.2+4.7=0.88-0.01=3-0.3=
6.7+0.9=8.6-1=0.82-0.32=7.3-0.4=
1.7+0.1=6.1+4.6=0.82-0.25=4.7-0.3=
3.8+0.7=6.3-1.3=0.62-0.45=4.2+0.2=
4.9+0.2=6.3+3.7=0.77+0.28=5.3-0.9=
6.5-0.8=8.7+1.1=0.66+0.04=2.2-0.8=
1.5+0.7=6+0.7=0.67+0.24=3.6-0.2=
6.9+0.8=6.7+2.1=0.79+0.48=3.4+0.6=
二、混合运算。
0.83-0.25+0.27.6-0.22-1.7897.6-38.3-53.2
88.44-31.66+35.969.31-42.09+14.434.87-1.37+3.09
30-(2.01+0.23)81.7+(11.5-8.3)9.37+6.4-2.44
一、口算。
8.3+0.9=8.5-1.3=0.79-0.04=3.8-0.5=
3.2+0.3=8.1+1.4=0.63+0.36=6.1+0.4=
6.8-0.6=7.8-3.1=0.68-0.01=8.4-0.1=
5.3+0.5=9+2.6=0.75-0.17=3.6-0.5=
1.6+0.2=7.4-2.3=0.77-0.01=7.1+0.9=
6-0.3=6.4-1.1=0.78-0.37=2.6-0.1=
4.8+0.4=8.5+4.1=0.86-0.3=1.1+0.2=
1.6+0.8=6.3-1=0.85+0.25=4.7+0.6=
二、混合运算。
0.85-0.46+9.19.4-0.64-3.3657.4+22-18.3
89.95-11.1+88.1563.44+19.12+12.279.32-3.92+2.55
70-(6.09+0.39)84+(10.1-7.2)5.87-3.25-1.14
一、口算。
3.1-0.8=6.2-0.3=0.78-0.14=8.6-0.1=
6.7-0.2=9-4.3=0.84-0.38=7.3+0.4=
6.2-0.7=7.3+3.3=0.84+0.33=2.7+0.7=
6-0.3=6.8+3.1=0.83-0.24=2.3-0.5=
4.7+0.2=6.6+4.3=0.74+0.4=2.4-0.6=
2.8+0.1=8.3-1=0.84+0.49=6.9-0.5=
2.6+0.2=7-4.1=0.76+0.16=1.5+0.9=
2.2-0.5=8+2.4=0.64-0.27=2+0.9=
二、混合运算。
0.83-0.46+9.85.6-0.3-4.798.4+51.9+37.3
89.55+48.52+29.6982.67-24.38+45.788.48+5.37-2.41
30-(7.21-0.75)77.5+(27.2+9)4.32+1.6+2.18
一、口算。
5+0.3=7.9-4.2=0.76-0.41=4.9+0.3=
8.3+0.8=6.2-0.6=0.64-0.36=6.6-0.7=
5.9+0.4=6.6-2.8=0.76+0.25=1.5+0.3=
6+0.6=8.4-0.8=0.82-0.34=7.2+0.7=
4.6+0.5=7.3-1.8=0.68+0.19=2.3-0.2=
4.5+0.6=8.9+3.5=0.69+0.33=4.2+0.9=
6.3+0.1=6+3.1=0.68+0.22=2.9-0.7=
2.3-0.6=6.4-4.5=0.62+0.19=3.8+0.7=
二、混合运算。
0.62+0.14+3.18.5-0.77-4.2381.4-26.6+20.3
66.57+19.99+86.2263.8-26.85+26.895.35+2.63+1.75
90-(7.74+0.15)75.9+(19.6-3.3)7.58-2.73+3.9
一、口算。
7.6+0.7=7.4+1.7=0.74+0.17=4-0.2=
2-0.2=7.9+4.8=0.63-0.13=6.4-0.3=
7+0.5=8.4-4.4=0.74+0.
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