人教版四年级数学下册小数加减法混合运算专项练习题83.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83.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83
一、口算。
6.4-0.5=6.5-0.8=0.87-0.31=3.4+0.7=
5.6-0.5=8.7-0.1=0.74-0.16=9-0.1=
4+0.7=8.6-3.1=0.62-0.41=5.8-0.5=
5.1-0.8=7.3-3.2=0.73-0.16=6.3+0.1=
5.3+0.1=6.5+0.8=0.78+0.19=4.6-0.1=
5.7-0.7=8.7-3.2=0.79-0.45=7.3+0.6=
1.5-0.9=6.2+0.5=0.88-0.14=2.2-0.1=
4+0.1=8.6-3.7=0.74-0.33=6.6+0.1=
二、混合运算。
0.8-0.05+4.66.1-0.14-3.8664.2+15.8-41.6
82.7-26.04+87.4379.77+22.41+58.793.96+2.28-1.66
70-(9.21+0.23)60.1-(11.2+1.7)6.94+3.01-2.12
一、口算。
5.6+0.2=6.8-3.4=0.89+0.46=6.4-0.3=
5+0.6=7+0.8=0.6+0.06=4.5-0.7=
1.8+0.9=8.4-2.5=0.68-0.37=8.4-0.3=
1.2+0.6=8.3+4.7=0.68-0.41=9-0.1=
3.5+0.3=6.7+4.4=0.9+0.25=3.6-0.1=
1.3-0.5=6.7+4.6=0.77-0.47=6-0.7=
2.8+0.3=8.5+4.7=0.66+0.4=5.1+0.1=
3.7-0.5=6.4+1.3=0.9+0.23=2.5-0.9=
二、混合运算。
0.74+0.01+6.67-0.5-3.575.7-55.6+19.5
85.88-19.79+33.3984.38-30.49+57.766.06-2.92+1.98
50-(6.01+0.11)97+(13.3+1.6)8.33+6.41+1.8
一、口算。
1.6-0.2=7.3+4.3=0.72-0.03=4.9+0.6=
4.6+0.2=7.1+1.4=0.6-0.07=8.7+0.5=
8.2+0.3=6.1+0.9=0.85+0.16=2.7+0.4=
2.4+0.3=7.9+2.3=0.77-0.23=2.9-0.6=
1.7-0.1=8+0.4=0.77+0.26=3.7+0.1=
7.5-0.5=7.6-2.5=0.63-0.3=8.6-0.5=
3.4+0.1=6.4+1.6=0.68-0.47=5-0.7=
2.9-0.4=8.5-1.1=0.68-0.05=2.7-0.1=
二、混合运算。
0.66+0.15+4.17.2-0.81-2.1935.6-13-10.6
63.58-36.04+20.0669.87+19.97+31.919.34-5.48-3.16
90-(7.09+0.92)70.2+(28.7+6.1)3.58-1.62-1.42
一、口算。
4.1-0.7=7+2.9=0.72+0.25=2.3-0.3=
7.4-0.6=7.9+3.4=0.66-0.45=5.9+0.3=
6.7+0.4=7.9+1.4=0.63-0.32=3.1+0.8=
4.8-0.4=7.1+2.8=0.9+0.14=7.2-0.5=
2.7-0.6=8.7+3.5=0.65-0.48=8+0.3=
7-0.7=7.2-2.5=0.73-0.3=2.3+0.9=
5.4-0.2=8+4.7=0.74-0.14=2.5-0.3=
2.4+0.7=7-4.3=0.71-0.48=8.5-0.8=
二、混合运算。
0.88+0.47+9.59.1-0.3-3.763.9+39.8+14.3
67.03+39.01+32.6162.12+32.22+42.549.8+7.98-1.42
40-(6.38-0.64)92.3+(11.9+7.1)8.52-5.33+2.12
一、口算。
1.7-0.5=6.6-4.5=0.87+0.01=6.4+0.9=
7.9+0.2=7.2+3.1=0.87+0.18=3-0.4=
6.4-0.2=8.8-0.7=0.81+0.13=4.1+0.4=
7.1-0.2=6.4-2.3=0.9-0.01=5.7+0.5=
4.5-0.6=7.9-1.4=0.9+0.28=6.8-0.4=
3.1+0.8=8.3-1.7=0.76+0.41=4.3-0.2=
4.6-0.1=6.5-2.2=0.9+0.03=5.3+0.3=
5.2-0.5=8.3+4.2=0.86-0.37=8.7+0.3=
二、混合运算。
0.87+0.37+7.66.1-0.79-3.2184.7-30.6-53.8
80.95-40.13+55.8476.07+33.48+23.459.27-1.86+7.23
80-(6.78+0.96)68.1+(22.9+3)9.18-4.82+3.7
一、口算。
3.2-0.1=6.8-0.2=0.84+0.17=6.3+0.2=
2.8-0.8=8-0.3=0.75+0.27=4.8+0.2=
4.2+0.4=8.3-2.6=0.9+0.18=5.4+0.8=
5.3+0.3=7.1+3.8=0.89+0.24=5.3+0.5=
8.5-0.9=7.7-0.8=0.76+0.4=2-0.4=
5.8+0.6=7.6-2.6=0.62-0.28=3.6+0.7=
8.7+0.7=8.2+2=0.7+0.01=2.2-0.9=
7.4-0.2=6.1-4.5=0.83-0.41=1.8+0.8=
二、混合运算。
0.89-0.04+0.85.5-0.73-0.2770.7+55.5+10.4
71.5+24.19+51.3173.33-48.85+91.617.56+2.94-1.15
30-(9.16+0.94)88.5-(26.3-9.7)3.96+1.93-1.83
一、口算。
1.7+0.6=7.6-4.2=0.61-0.48=5.9-0.4=
3.8+0.2=9-2.7=0.65-0.01=5.9+0.2=
1.3-0.6=6.5+2.1=0.75+0.45=2-0.3=
8.3+0.4=6.9+0.2=0.65+0.08=7.9-0.9=
3.2-0.4=6.7+2.6=0.9-0.17=8.1+0.1=
8.9+0.5=8.2+2.3=0.6-0.14=8-0.1=
3.5+0.2=8+0.8=0.64-0.23=8.2-0.7=
5.9+0.7=7.9-1.3=0.69+0.14=8-0.9=
二、混合运算。
0.65+0.29+4.58.1-0.87-2.1376.7-28+12.3
73.2-34.78+46.3563.64-36.45+29.514.66+1.31+1.64
80-(7.66-0.25)93.1+(24.7+8.3)8.51-2.54+1.49
一、口算。
2.9-0.4=8-2.5=0.9+0.17=4.3+0.6=
2.5+0.4=6.2-2.6=0.74+0.26=2.2-0.2=
5.4+0.8=7.2-1.2=0.61-0.47=4.7-0.9=
1.7+0.2=7.3+4.7=0.76-0.02=6.7-0.6=
7.3+0.8=6.2-4.3=0.6-0.32=4.4+0.6=
5.3-0.1=9-3.1=0.82-0.4=7.7+0.9=
2+0.6=7.9-2.2=0.89+0.23=1.8-0.3=
1.8+0.8=6.6-1.1=0.66+0.16=6+0.8=
二、混合运算。
0.63+0.41+9.57.7-0.2-4.891.3+32.9-42.6
89.07-43.57+73.7880.98-25.95+58.94.06-2.54+1.44
30-(5.62+0.37)74.2-(18.6-4)3.6+1.91+1.21
一、口算。
5.4+0.2=6.4+3.4=0.87-0.16=4.2-0.4=
1.3-0.5=7.6-4.1=0.67+0.47=8.6-0.7=
6.9+0.7=7.2-1.6=0.86-0.23=5.5+0.2=
5.1-0.6=7.7-4.2=0.62+0.44=3.1-0.7=
5+0.7=8.4+2.2=0.85-0.01=5.8-0.5=
6+0.2=8.5-2.5=0.63-0.27=4.3+0.1=
2.1+0.4=6.6+0.9=0.84+0.14=8.8-0.2=
8.7+0.8=7.1-0.2=0.62+0.14=1.7+0.7=
二、混合运算。
0.79-0.2+2.27.6-0.77-4.2373.5+17.7-29.8
60.22+41.7+69.3276.32-45.51+15.166.62+3.18-2.07
90-(9.02+0.59)78.3-(12.2-6.9)7.36-4.9-1.51
一、口算。
3.1+0.7=8.8-3.8=0.61+0.14=8.5+0.7=
7.7+0.5=8.6+0.7=0.9+0.22=6.7-0.5=
8.4-0.8=6.9-1.7=0.63-0.2=8.7+0.2=
4.8+0.8=9+1=0.67+0.06=8.7+0.6=
4.9+0.4=6.4-2.9=0.76+0.35=5.8+0.3=
1.2+0.7=7.5+1=0.7+0.37=1.4-0.5=
5.7+0.9=6.9+2.2=0.74+0.36=7.8+0.2=
8+0.6=7.3-0.2=0.62-0.1=4.9-0.1=
二、混合运算。
0.78+0.16+9.56.3-0.37-3.6345.5+18.5-23.4
75.48+19.99+55.3986.94+29.73+93.014.57-1.74-1.47
90-(6.9-0.48)63.2-(28.8-1.3)6.48+1.6-2.48
一、口算。
2.3-0.5=6.9-3.7=0.83-0.35=3.4-0.6=
8.6-0.2=7.9-2.8=0.7-0.23=5.4-0.4=
6.2-0.4=8.3+3.3=0.76-0.47=1.1+0.5=
8.3+0.8=7.1+2=0.64+0.45=7.9-0.4=
2.3-0.6=9+4.2=0.61-0.32=6-0.8=
2.2+0.7=8.7+0.6=0.67-0.04=1+0.1=
5.3-0.4=8.7+3.1=0.7-0.44=2.9+0.3=
6.9-0.1=7.4+2.3=0.87+0.4=3.1+0.5=
二、混合运算。
0.69-0.03+3.28.7-0.49-2.5157.9+28.5-20.1
82.6-29.47+90.6583.74-37.37+13.163.81+2.23-1.4
30-(3.32-0.18)73.2+(27.9-1.6)4.39-2.33+1.75
一、口算。
6.1+0.3=8.9+2.3=0.69+0.16=7.8+0.6=
1+0.1=8.7-0.3=0.64-0.32=2.5-0.9=
6.5-0.6=8.4+0.5=0.78-0.16=4.3-0.1=
5.9+0.6=6.8-3.7=0.89-0.03=3.2+0.9=
4.6+0.1=6-0.6=0.62-0.35=2.2+0.4=
2.4-0.5=8.2+2.8=0.85-0.22=7.4-0.2=
1-0.3=8.4-4.9=0.65+0.24=9+0.7=
7.5-0.6=7.2-1.8=0.66+0.48=6.3+0.6=
二、混合运算。
0.75+0.16+6.39.4-0.24-2.7655.1+35.7+16.1
70.08+24.25+32.170.83-31.56+42.945.65-1.77+1.18
80-(7.22-0.28)73-(25.8-2.9)3.89+1.4+1.04
一、口算。
8.1-0.3=6+2.8=0.87+0.43=8.7-0.8=
1.9-0.4=6.4+4.5=0.61-0.09=3.4-0.2=
8.5+0.2=8.1+3.4=0.75+0.17=4.7+0.2=
5.6-0.9=6.9+2.5=0.75+0.46=7.3-0.5=
4.3-0.2=8.1-2.5=0.82-0.44=5.9-0.2=
3.8-0.8=7.2+4.2=0.62+0.41=4.7+0.6=
7.6+0.4=8.5-1.4=0.88-0.41=5.7+0.9=
8.1-0.5=7.3+4.5=0.89+0.27=3.5-0.8=
二、混合运算。
0.67+0.16+9.98.9-0.5-4.562+39.5-10.5
75.18-36.02+21.7784.18+22.97+36.635.41+2.45-2.59
90-(1.53+0.95)79.2+(28-1.8)9.86-4+2.83
一、口算。
3+0.3=8.8+0.7=0.73-0.36=1.6-0.1=
1.2-0.6=6.3+2.9=0.9-0.41=6.2-0.9=
2.6-0.4=7.8+0.1=0.75+0.46=7.4-0.6=
6.6-0.4=6.2-1.4=0.86-0.47=8.5-0.2=
3.4+0.6=6+0.1=0.62+0.4=7.3-0.7=
8.1+0.8=8.3-3.5=0.7-0.36=6.1+0.7=
5.6+0.2=7.6+4.4=0.74+0.34=6.8-0.5=
1.5-0.6=8.8+0.7=0.74-0.49=1.6-0.6=
二、混合运算。
0.73-0.03+88.7-0.35-3.6599.5+75-17.2
63.63+13.36+47.781.43-19.91+91.668.17+3.85+1.66
90-(7.57-0.18)72+(11.7-8.2)7.82-3.67-1.9
一、口算。
3.3-0.8=8-4.4=0.81-0.37=6-0.2=
3.1-0.2=8.1-2.9=0.7-0.36=6.2+0.8=
6.7+0.6=6.1-3.5=0.8+0.11=4.3+0.6=
2.5+0.4=6-0.7=0.84-0.16=8.1-0.8=
8.2+0.1=8.9-1=0.78-0.36=8.9+0.4=
1.3-0.7=6+2.6=0.73-0.09=1.1+0.2=
4.9+0.3=9+4.8=0.77-0.15=6.2+0.5=
4.9+0.1=8.3-1.8=0.62-0.17=2.7+0.2=
二、混合运算。
0.69+0.03+1.19.3-0.67-3.3372.6-29.3+36.5
85.35-34.06+11.1861.95+21.78+50.95.33-3.67-1.41
30-(8.3+0.87)84.5+(14.6-7.5)8.34-4.74-2.57
一、口算。
3+0.8=8.1+3.9=0.82-0.29=9+0.3=
7.3-0.3=8.2-3.9=0.67+0.34=1.3+0.6=
5.2+0.8=7.8+3.9=0.74-0.47=7.9+0.3=
5.8+0.9=6.2+1.3=0.61+0.27=6.2+0.5=
7.3+0.7=7.3-4.9=0.77+0.38=7.7+0.8=
6+0.2=6.1-1.9=0.89-0.18=4.5-0.6=
2.4+0.1=8.6+1.9=0.79+0.47=3.7+0.8=
1.8+0.4=8.9+0.6=0.68-0.4=4.8+0.5=
二、混合运算。
0.73-0.12+6.19.4-0.15-3.8569.3+29.1-34.1
77.06-41.3+89.4478.43+31.2+43.254.29-1.14+1.63
30-(7.48+0.73)91.6-(17.8-1.6)5.29-1.19-2.13
一、口算。
3+0.4=8.4+3.5=0.78-0.23=4.3+0.6=
6.1-0.7=6.6+4.6=0.9-0.28=3-0.6=
1.4-0.3=8.9-4.5=0.63-0.07=2.7+0.3=
4.4-0.6=7.6-0.9=0.65+0.37=4.3-0.5=
6.9-0.1=6.4+0.1=0.6+0.09=6.1+0.6=
6.8+0.9=6.2+3.6=0.87-0.29=6.6-0.8=
1.3+0.7=7.7+3.2=0.8+0.33=7.6+0.7=
8.2+0.9=8-0.8=0.83-0.33=1.8+0.2=
二、混合运算。
0.62-0.04+9.76.4-0.61-2.3966.3-26.3+10.4
68.58+29.6+53.8362.3-41.19+84.598.02-4.76-1.4
40-(6.65-0.37)78.7-(21.3-9.1)5.64+2.52-1.77
一、口算。
5.2+0.9=6.3-3.8=0.86-0.03=7.1-0.3=
3.2+0.8=7.3+2.6=0.74-0.21=8.2+0.5=
2.6+0.9=8.9+1.1=0.66+0
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