人教版四年级数学下册小数加减法混合运算专项练习题131.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131.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131
一、口算。
7.1-0.2=7.1-0.3=0.68+0.42=4.7-0.4=
7.5+0.9=7.8+1.9=0.87-0.22=5.6+0.2=
6.5-0.7=7.6-4.9=0.7+0.3=1.5+0.8=
1.5-0.1=7+4.8=0.79-0.49=5.1-0.8=
1.2+0.5=8.6+0.2=0.65-0.43=4.7+0.9=
3.1-0.8=8.1-3.8=0.78-0.28=2.8-0.4=
1.1+0.3=6.9-1.8=0.69-0.36=6.5+0.4=
6.4+0.8=7.2+3.2=0.6+0.48=5.4-0.3=
二、混合运算。
0.73+0.42+9.48-0.52-3.4847.3+14.3-18.6
84.18-20.02+58.0281.52-27.63+27.45.96-1.18+2.79
30-(3.95-0.18)74.1+(27.9-3.1)8.13+5.93+1.5
一、口算。
6.3-0.1=6.4-4.9=0.71-0.1=5-0.5=
9-0.9=6.6-3.5=0.79+0.43=1.6-0.3=
6.9+0.3=6-4.3=0.69+0.21=9+0.9=
7.4-0.9=8.7-1.1=0.78-0.27=8.2-0.8=
8.6-0.4=7.4+2.3=0.85-0.14=8.3-0.8=
6+0.6=6.3-4.4=0.9+0.09=6.3-0.2=
2.6+0.3=6.1+0.6=0.6+0.17=5.3-0.5=
4.1-0.1=6.2-3.4=0.84-0.44=2.9-0.6=
二、混合运算。
0.63-0.47+8.88.9-0.41-3.5955.1-17.9+11.3
88.32+28.09+96.3173.02-24.21+73.899.11+5.49+1.73
20-(6.1-0.23)70.7-(28.2+7.2)9.74-5.52+2.08
一、口算。
3.6+0.2=8.7-3.7=0.89+0.3=1.2-0.9=
1.4-0.9=6.3+4.2=0.85+0.25=6-0.8=
4+0.6=7.3-3.1=0.87+0.05=2-0.2=
5.8+0.4=8.7-1.7=0.61-0.45=3.4+0.6=
4.9-0.8=8.8+3.8=0.87+0.18=4.7-0.7=
7.5+0.5=8.4-3.5=0.69+0.22=3.4+0.1=
2.8+0.6=8+1.1=0.6+0.22=6.1+0.8=
7.5+0.7=8.4+4.9=0.62+0.19=8.7+0.7=
二、混合运算。
0.81-0.01+3.39-0.64-4.3663.2+12.6+13.1
80.13-31.42+19.9881.1-10.77+85.577.41+3.75+3.04
40-(8.65+0.25)98.4+(25.9+4.1)7.25+1.75+2.46
一、口算。
5.9+0.8=9+4.7=0.84-0.47=6.5-0.6=
3.1-0.1=7.7-3=0.68+0.35=7.6+0.1=
2.4+0.1=6.1-3.5=0.86+0.37=8.8+0.3=
1.9-0.7=8.3-4.5=0.72-0.08=1.9+0.5=
4.7+0.3=8+0.4=0.69+0.21=2.8+0.5=
3.2+0.4=7.5+2.2=0.83-0.03=2.3-0.3=
1.2-0.5=6.3+2.6=0.77-0.44=8.9+0.4=
4.9+0.7=8.4+0.3=0.66-0.26=1.8+0.1=
二、混合运算。
0.77-0.13+7.88.1-0.61-1.3948-28-18.1
79.14+35.06+21.2482.91+35.42+80.556.87-4.01-1.3
20-(8.04-0.1)86.3+(22.8-5)8.96-6.7+1.71
一、口算。
5-0.9=7.5-1.4=0.76+0.32=3.9+0.6=
7.9+0.2=8.7-3=0.67-0.01=5.8-0.5=
2.4+0.2=8.1+4.6=0.6-0.4=1.5-0.8=
4.7+0.7=6.3-1.4=0.74-0.48=6.6+0.1=
6.9-0.2=7.4+2.7=0.66-0.24=5.6+0.7=
1.6+0.1=6.3+2.4=0.66-0.09=6.5+0.3=
7.4-0.9=6.1-2.8=0.68+0.43=3.1+0.5=
2.5+0.3=8.7+0.6=0.67+0.37=3.6-0.5=
二、混合运算。
0.81+0.02+4.19.6-0.29-4.7178.5-37.7+40.6
76.44-18.87+22.7667.16+39.42+77.525.99-1.33-2.56
60-(9.96-0.1)96.2-(22.4+7.7)6.81+5.18-1.49
一、口算。
2-0.9=7.8-3.6=0.78-0.44=3.7-0.7=
8.2+0.8=7.1-2.2=0.73-0.42=1.5+0.9=
5.3-0.9=8.9+1.8=0.75-0.28=9-0.2=
6.9-0.7=8.8-0.2=0.86-0.08=6.8-0.2=
4.7+0.9=8.3-3.3=0.89+0.05=7.9+0.7=
8.5+0.2=8.8+3.4=0.87+0.14=8.7-0.8=
2+0.6=8.7-0.8=0.83-0.2=6.2-0.7=
3.4-0.7=8-3.9=0.78+0.44=4+0.1=
二、混合运算。
0.61+0.49+2.39.5-0.39-2.6196.5+60.8+16
68-42.34+47.6765.23-27.39+15.124.61+1.66-2.59
20-(1.36+0.81)60.2+(27.5+2.5)9.18+2.54-1.91
一、口算。
3.3+0.5=7.4-0.3=0.65-0.3=8.1+0.4=
3.6+0.6=7.3-4.6=0.87-0.02=5.1+0.3=
7.4-0.1=7.2+1.4=0.84+0.26=7.9-0.7=
3.5+0.7=7.1+4=0.73-0.41=4.4+0.2=
4.8+0.2=7.8+1.5=0.77+0.45=2.4-0.8=
6.5-0.6=6-1.7=0.79-0.49=5.2+0.3=
6+0.9=6.4+3.6=0.77-0.48=6.1-0.1=
1.4+0.7=6.7-0.4=0.65-0.15=6.5+0.4=
二、混合运算。
0.89-0.12+66.3-0.65-1.3561.6-37.6-23.3
72.48+20.74+97.6687.4+19.59+34.553.74+1.81-1.73
20-(8.11+0.34)70.7+(23.2-5)7.15-3.95+3
一、口算。
2.2-0.9=7.7-0.2=0.64-0.3=6.7-0.8=
3+0.8=6.2-4.7=0.88+0.29=1.2+0.7=
1.4+0.3=6.2-1.1=0.69+0.33=7.1-0.9=
8.8+0.2=8.4+1.9=0.79+0.04=3+0.7=
8.5-0.9=6.4+2.2=0.77-0.18=2.7-0.4=
6.6+0.7=6.1-0.4=0.68+0.18=9-0.3=
3.6+0.5=8.1+2.4=0.79+0.28=1.5-0.7=
1.2+0.2=6.8-3.1=0.65-0.41=6.7+0.4=
二、混合运算。
0.85+0.29+5.87.7-0.76-0.2482.4+21.2-44.9
75.15-48.64+68.8562.8+13.93+17.769.95-7.99-1
30-(4.31-0.6)73.9-(26.7-9.7)4.94+3.41-1.39
一、口算。
7.6+0.4=7.4-2.9=0.9-0.05=6.5-0.9=
2.2-0.6=7.7-3.7=0.74+0.22=8.8-0.2=
5.5+0.5=8.8-1.8=0.87+0.33=8-0.3=
8.2+0.2=6.4-3.9=0.6-0.45=7.4+0.5=
8.9+0.9=7.1+0.8=0.88+0.45=5.8+0.3=
9-0.1=9-2.3=0.77-0.19=5.3+0.5=
2.2+0.1=7.6-2.5=0.83-0.38=8.3-0.2=
4.8-0.9=6.3+3=0.71+0.11=6.1-0.1=
二、混合运算。
0.85-0.24+0.96.5-0.14-4.8667.8-12.3-41.5
80-40.94+56.6378.72+12.05+13.147.93-5.13+2.15
90-(7.27+0.16)95.8-(23.4-6.8)5.43-3.56-1.85
一、口算。
8.8+0.5=6.7+4.7=0.84-0.01=8.2+0.5=
7.8-0.9=7.9+3.1=0.88+0.42=7.4+0.2=
8.7-0.5=7.1+0.5=0.73-0.01=4.2-0.3=
6+0.9=6.9+2.8=0.61+0.24=4.8-0.7=
2.6+0.7=8.2-4.8=0.82+0.34=9-0.9=
5.1+0.6=6.7+2.8=0.76-0.15=3.7-0.1=
8.8-0.4=6.2+1.1=0.86-0.3=8.3-0.9=
4.8+0.2=7.7-3.5=0.77-0.44=7.7-0.6=
二、混合运算。
0.84+0.45+0.96.1-0.83-2.1749.6-15.6-11.9
64.76+26.28+27.1874.63+18.54+52.666.66-1.26+3.13
40-(1.82-0.89)89.9+(12.4-5.8)8.03+5.71+2.14
一、口算。
2.8+0.2=7.2+2.9=0.84-0.4=6.7-0.4=
3.4-0.1=8.3-2.8=0.67+0.31=8.1+0.2=
4.3+0.5=8.4-2.3=0.9+0.47=1.3-0.2=
7.9+0.4=7.6-3=0.88-0.48=8.2+0.5=
4.6-0.2=6.8+3.5=0.75+0.05=4.9+0.3=
3.8+0.5=8.5+3.8=0.63+0.26=2.7-0.4=
8.1+0.4=6.6+3=0.63-0.42=7.2-0.4=
6.5-0.5=7.1-4.7=0.68+0.05=3.8+0.7=
二、混合运算。
0.61+0.28+2.89.5-0.57-1.4355.1+16.4-28.7
64.55+13.66+49.7476.34-35.3+66.788.36+6.76+1.35
30-(5.8+0.57)98.8-(29.6+9.3)5.94-2.41+2.43
一、口算。
1.6+0.7=8.1+2.1=0.66-0.37=5.3-0.7=
2.6+0.8=8.9-0.6=0.67+0.3=7.9+0.4=
1.1-0.1=8.8-4.4=0.77+0.49=6.5-0.2=
2.7+0.7=8-3.4=0.89+0.4=7.9+0.9=
7.8-0.7=7.5-2.2=0.73+0.17=2.5-0.1=
4.8-0.3=8.6-3.2=0.62-0.21=6.3+0.4=
5.1-0.1=8.8+1.9=0.75+0.08=7.2+0.2=
3.4+0.9=6.4-2.5=0.64-0.41=7.5+0.8=
二、混合运算。
0.73-0.44+76.1-0.53-0.4764.8-32.6-14
76.95+35.46+63.6372.78-18.31+99.698.01+3.22+3.64
80-(5.1-0.64)97.6+(14.1+5.2)6.53-4.91+1.2
一、口算。
2.1+0.6=6.3+0.9=0.83+0.1=4.2+0.1=
5-0.3=7.2-4.9=0.82+0.33=3.9-0.6=
5-0.7=8.9+4.2=0.79-0.42=8.4+0.2=
8.8+0.3=8.1-4.5=0.85+0.13=7.3+0.4=
5.7-0.6=8.3+0.7=0.76+0.23=6.1+0.2=
1.4+0.9=7.1+1=0.82+0.49=8-0.1=
2.1+0.2=6.7+0.1=0.75-0.38=7.2-0.6=
7.6+0.9=6.9-1.1=0.64+0.12=2.8-0.9=
二、混合运算。
0.87-0.19+9.98.9-0.76-0.2471.2+46.8-11.9
70.21-40.11+99.6889.91-40.38+85.644.12+1.12+1.64
30-(2.53-0.82)90.8+(14.5+8.5)8.87+4.17-3.89
一、口算。
1.4+0.8=7-2.7=0.75-0.07=6.7+0.8=
7.6-0.7=8.6+4.7=0.65-0.41=8.2+0.3=
7.9+0.6=7.5+0.5=0.88+0.08=8.6+0.2=
1.9+0.2=6.7+2.6=0.71+0.17=5-0.9=
4.1+0.6=7.7-2.8=0.85-0.49=3.5+0.9=
8.8+0.5=6.3-4.9=0.87+0.47=6.9+0.5=
8.6-0.9=6.3-0.2=0.63-0.32=6.8-0.6=
7.4-0.5=7.7-1=0.66-0.3=1.2-0.9=
二、混合运算。
0.74-0.09+7.55.2-0.33-3.6782.7-33.6+28.4
61.69-22.55+84.7783.18-46.37+28.886.45+4.86+1.42
80-(5.65+0.21)86.7+(11.6+1.1)7.09+2.26+1.51
一、口算。
5.1+0.5=6-4.6=0.73+0.19=4.5+0.4=
3.7+0.4=6.2+1.1=0.65+0.3=2.2+0.8=
5.7-0.4=6.2+0.4=0.75+0.34=3.3-0.6=
2.6+0.2=8.4-4.3=0.87+0.08=7.6+0.7=
8-0.2=8+2.5=0.83+0.2=8.7+0.7=
3-0.4=8.6+0.7=0.85-0.47=2.8+0.6=
3.8+0.1=6.9-0.8=0.74-0.05=5.9-0.7=
3.4+0.3=8.8-3=0.88+0.1=2.6-0.7=
二、混合运算。
0.77-0.19+6.29.7-0.65-4.3590.7-75.6-11.1
67.45+30.46+8287.95-16.26+28.645.55+3.86+1.6
70-(7.21-0.72)93-(15.5+8.4)5.48-1.37-3.9
一、口算。
3.7-0.2=8.3+0.7=0.84-0.22=3.8-0.9=
4.2-0.3=7.7+0.6=0.77+0.3=5.8-0.5=
6.4+0.3=6.1-1.7=0.72+0.46=5.4+0.8=
4.5-0.5=8.4-3.1=0.6-0.47=2.8+0.1=
1.3-0.9=6-1.1=0.69+0.23=2-0.9=
6.9+0.2=6.8+1.1=0.82-0.26=6.6-0.4=
5-0.9=8.3+3=0.64+0.47=5.7-0.5=
8.7-0.5=7.9+3.5=0.78+0.16=5.1-0.8=
二、混合运算。
0.85-0.44+1.17.7-0.33-1.6796.8-48.5+27.8
83.44+16.94+25.0669.73+12.84+55.286.77-3.52-3.06
40-(9.41+0.88)76.6-(15.4+1.8)5.77-3.65-1.13
一、口算。
4-0.2=7.1-0.7=0.78-0.01=1.1-0.1=
7.2-0.9=8.5-1.3=0.9+0.16=5.2-0.8=
7.6-0.7=7.6-3.7=0.8-0.05=4.5+0.4=
7.4-0.6=6.7-0.3=0.89+0.31=1-0.6=
6.5-0.2=6.6-3.6=0.77-0.3=8.8+0.2=
2.7-0.4=9+3.5=0.64-0.43=7-0.3=
2.6+0.2=8.5-0.7=0.61+0.37=4+0.3=
2.3+0.7=6.5+0.5=0.77-0.37=4.2-0.2=
二、混合运算。
0.66-0.38+9.79.9-0.44-1.5662.2+14.9-35.5
74.11+15.79+33.4661.64+37.58+15.049.71-4.03-4.88
50-(1.36+0.22)72.5+(29.4+3.8)8.98+4.39-3.2
一、口算。
2.7+0.4=6.5-3.8=0.76+0.46=5.8+0.7=
2.8+0.1=7.8-1.9=0.8+0.3=2.2+0.6=
6.6+0.7=8.4-2.
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