人教版四年级数学下册小数加减法混合运算专项练习题114.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114
一、口算。
1.8-0.9=8-2.3=0.89+0.01=6.4-0.2=
5.8-0.5=8.3+1.8=0.89-0.27=2.4+0.6=
2.3-0.3=6+3.7=0.77-0.24=2.9-0.2=
4.8-0.4=7+3.8=0.78-0.43=2.2+0.9=
1.4+0.6=8.5-0.9=0.62-0.3=2.6+0.1=
3.7+0.9=8.4-4.7=0.77+0.05=8.9-0.8=
8.8+0.2=8.2-1.1=0.84-0.23=4.3-0.3=
1.3-0.2=7-1.3=0.84+0.41=8.7+0.4=
二、混合运算。
0.66-0.43+9.66-0.87-4.1358+32.8+10.5
78.54+29.94+78.7872.15-13.03+22.838.04-1.67-1.88
90-(7.66+0.71)76.8+(19.6+8)7.45-3.98+3.44
一、口算。
6-0.5=6.3+3.9=0.7-0.4=5.8-0.3=
5.1-0.5=7.1-2.8=0.65+0.15=4.1+0.9=
9+0.7=6.9+3=0.62-0.12=8.8+0.2=
1.9-0.2=6.5-0.9=0.76+0.27=8.9-0.5=
6.2+0.7=8.4+2.7=0.76-0.18=4.5-0.8=
4.5+0.5=7.9-3.7=0.61+0.14=2.4+0.7=
5+0.8=8.3+0.5=0.7+0.3=4.3+0.6=
6.5+0.6=8.2+2.7=0.62+0.25=4.2-0.7=
二、混合运算。
0.83-0.43+7.25.3-0.9-2.178.9+14.4+12.8
64.44-10.71+18.8974.44+47.92+11.587.81-4.62+2.82
60-(9.39+0.29)64.3+(17.4+3.6)5.45+2.58+2.52
一、口算。
6.6-0.5=7.8+3.8=0.83-0.47=3.1-0.8=
5-0.2=6.9-0.2=0.7+0.26=2.8-0.8=
8.5-0.6=8.6+1.8=0.8-0.12=5.8+0.8=
5.4-0.1=6.1-4.7=0.61-0.1=6.3-0.1=
6.7-0.3=8.5-2.1=0.83-0.36=2.9+0.3=
3.5-0.6=9-2.7=0.82+0.2=2.3-0.8=
7.5-0.5=6.5+0.2=0.75+0.43=2.4+0.2=
3.8+0.3=6.7+0.5=0.7+0.49=3.5-0.2=
二、混合运算。
0.76-0.14+7.35.4-0.89-4.1139.3-14.5-14.3
83.58-27.64+71.666.1-23.05+34.174.56-1.11+2.86
50-(1.35-0.83)78.9+(26.3-5.5)9.84+4.53+5.23
一、口算。
8.8-0.4=6.1+3.7=0.75+0.37=7.8+0.4=
2.7-0.4=7.2+3.9=0.79+0.2=4.1-0.9=
4.4+0.7=7.6-1.8=0.64-0.24=8.2+0.4=
5.2-0.9=6.7+4.2=0.78+0.15=5+0.3=
1.5-0.5=6.3-0.6=0.8-0.46=6.9-0.3=
5.2+0.1=6.2+1.1=0.63+0.24=5.9+0.2=
2.6-0.4=8.7+0.7=0.81-0.21=4.9-0.5=
8.8+0.3=8.1+0.2=0.62-0.1=1.2+0.6=
二、混合运算。
0.72+0.01+0.25.7-0.64-0.3684.4-35.8-35.5
87.94+34.89+73.9661.66-37.17+97.596.84-1.98-3.29
70-(3.68-0.18)61.7-(22.8-6.8)4.11-2.34+1.2
一、口算。
4.1-0.6=6.5+3.1=0.74+0.46=9+0.1=
3.1+0.4=6+2.2=0.9-0.3=7.4-0.5=
4.6+0.5=9-3.1=0.64+0.16=4.3-0.4=
5.2+0.7=7.4+0.3=0.85+0.4=1.9+0.8=
1.5+0.7=8.1+3.3=0.71-0.07=4.6-0.4=
5.7-0.1=7.4+0.3=0.75+0.31=4+0.5=
6.4-0.3=8.1-3.9=0.67-0.49=3.7-0.8=
4.9+0.3=7+2.4=0.76+0.11=8.1+0.8=
二、混合运算。
0.85-0.03+5.79.3-0.45-1.5539+18+16
84.91-11.73+84.3376.11-21.36+86.547.18-5.18+1.89
40-(8.95-0.79)65.1-(13.7-5.2)6.53+4.19+1.27
一、口算。
4.2+0.4=6.2-0.5=0.81-0.09=3.2-0.7=
3.2-0.9=8+4.9=0.83+0.16=3.7+0.1=
3-0.9=7.5-2.7=0.86-0.14=2.4+0.9=
6-0.3=7.8-4.1=0.79+0.44=3+0.3=
8.3-0.4=7.7-1.3=0.82+0.34=6+0.7=
2.3-0.1=6.5-2.7=0.85-0.48=3.9-0.8=
2.6+0.2=7.5-4.7=0.82-0.3=4.1+0.1=
1.1-0.4=6.7-4.2=0.82+0.15=7.6+0.3=
二、混合运算。
0.75-0.14+2.88-0.89-1.1153.1-35.4+16.6
64.4+34.15+75.2786.58-36.57+88.327.28-3.44+3.12
20-(8.88+0.12)95.3-(21.7-4.9)9.3+1.28-3.38
一、口算。
1.6+0.5=7.2+2.1=0.66-0.05=8.6+0.5=
2.9+0.9=7.8-3.4=0.68+0.39=5.5-0.1=
1.1+0.5=7.8+2.5=0.78+0.13=8.1+0.5=
7.1+0.4=6.9+1=0.68-0.42=7.2-0.8=
3.2+0.2=7.4-3.2=0.83-0.23=5.4+0.2=
3.3+0.6=7.4-1.3=0.89-0.29=5.2-0.7=
5.5+0.1=8.8+2.6=0.86-0.43=5.2-0.7=
7.7+0.6=7.1-0.3=0.63+0.4=4.9-0.9=
二、混合运算。
0.85+0.3+9.79.7-0.13-0.8775-10.8-30.3
62.18+10.71+66.761.59-31.1+73.879.87-1.97-4.35
40-(3.61+0.77)76.6+(11.7+8.9)8.96-2.97-1.37
一、口算。
3.6-0.5=6.8-3.6=0.72-0.06=2.2+0.3=
7.8-0.6=7.1-4.8=0.84-0.16=8.3+0.1=
3+0.1=6-3.6=0.83-0.36=3.8-0.8=
6.2+0.4=8.1-3.4=0.71-0.47=3.2+0.6=
5.5+0.9=6.8-1.4=0.61-0.24=4.2+0.7=
8.3+0.6=7.6-2.7=0.76+0.28=7.5+0.6=
3.7-0.3=7.3-3.5=0.66+0.43=5.8+0.4=
8.5+0.9=7.4+4.2=0.66+0.31=1.7+0.3=
二、混合运算。
0.8+0.26+2.49.6-0.24-2.7687.2-20.9-56
65.76-44.08+52.1271.22+38.68+54.719.86-1.84+7.33
90-(5.93+0.94)90.4-(24.2+9.5)7.08+2.59-3.61
一、口算。
4-0.9=7.7+0.3=0.67+0.39=7.5-0.8=
9-0.2=8.1-0.2=0.6+0.47=2.7+0.6=
3.3-0.5=7.1-2=0.79+0.49=2.6+0.7=
1.2-0.4=8.5+1.1=0.63+0.22=3.2-0.4=
3.9+0.6=7.2+2.8=0.85-0.34=1.1+0.3=
6.7-0.3=6.2+2.8=0.76+0.3=1.9-0.4=
8.1-0.3=8.1-2.4=0.71-0.12=6.8-0.6=
7.5-0.5=8.5-0.5=0.87+0.45=6.4-0.4=
二、混合运算。
0.68-0.15+2.99.5-0.54-1.4668.7+33.5+19.7
60.96-20.63+26.7487.98+12.85+33.294.56+2.75+1.48
70-(8.91-0.15)62.5-(26.5-6.9)4.03+1.15-2.8
一、口算。
7.9+0.1=8.4-4.5=0.86+0.22=5.7+0.9=
6.2+0.1=7+4.3=0.89-0.39=1.4-0.7=
2.3-0.1=8.2-2=0.79+0.08=4.7-0.6=
6.8-0.4=7.3-0.5=0.62-0.23=6.9-0.2=
7.9+0.8=7.5-4.8=0.86+0.06=5.5+0.8=
4.6-0.2=7.8+1.4=0.81-0.13=5.7-0.7=
1.3+0.7=6.8+4.3=0.85-0.12=6.9+0.2=
1.2-0.8=7.1+4.5=0.86+0.47=3.1-0.8=
二、混合运算。
0.84-0.34+0.36.1-0.51-4.4986.2+18.5+49.7
74.09+17.28+17.7583.13-19.95+66.155.04+2.24+2.11
70-(7.98+0.85)67.3+(23.6+4)6.71-4.81-1.29
一、口算。
1.7-0.4=8.8+3.9=0.85+0.46=7.5+0.3=
5.2-0.5=8.9+4.1=0.61-0.13=6.6+0.1=
6.8+0.3=8.9+1.6=0.84-0.24=7.6-0.2=
8.8+0.3=7.4-1.4=0.6-0.18=1.9+0.9=
8.9-0.2=8+1.9=0.89+0.29=6.1-0.6=
7.7+0.2=6.6+3.7=0.87+0.11=5+0.3=
2.9+0.3=8+3=0.66-0.4=1.2-0.2=
8.9-0.3=6+2.3=0.73+0.17=5.8+0.7=
二、混合运算。
0.82-0.29+5.19-0.81-3.1940.3+11.6+25.5
88.72-44.76+45.3180.08+35.39+73.558.73-3.14-1.59
90-(9.77+0.82)95.7+(13.7+6.9)9.37+5.28-3.53
一、口算。
8.8+0.3=8.1+0.5=0.74-0.33=5.8+0.3=
1.4-0.7=7-2.4=0.9+0.42=2.4-0.9=
2.2-0.4=8.4-2.7=0.86-0.48=3+0.8=
7.2+0.1=8.5-1.7=0.85+0.12=6+0.2=
5.1+0.6=8.9-3=0.64-0.24=6.3-0.5=
7.5-0.8=8.4+0.3=0.87+0.32=2.6+0.6=
1.5-0.4=8.7+2.4=0.62+0.48=3.9-0.9=
5.4+0.3=6.2-1.5=0.73-0.05=8.5+0.3=
二、混合运算。
0.7-0.46+7.25.6-0.63-1.3788.6-70.5-14.5
62.03+28.43+93.5566.65+45.06+71.829.2-3.13-4.46
80-(3.26-0.61)62.2-(15.1+4)5.73-3.92-1.01
一、口算。
7.2-0.3=8.9-4.4=0.66-0.01=2.7-0.6=
2.9+0.2=8-0.2=0.86+0.2=2.8+0.8=
5.1+0.8=6.7-1.9=0.89+0.46=8.9-0.4=
4.1+0.9=7.4-4.4=0.84-0.44=2-0.7=
3.1-0.9=8.9-3.7=0.72-0.07=4.5-0.1=
6.5-0.1=7.1+1.8=0.69+0.24=2+0.6=
7.2-0.9=8.2-0.7=0.8-0.29=1.9-0.5=
2.3+0.1=6.5+3.9=0.82+0.4=2.2-0.3=
二、混合运算。
0.82-0.47+6.37.4-0.64-2.3673.3-38.6+18.2
74.15+44.43+52.8274.14+48.27+54.458.76-4.56+3.19
20-(6.23-0.78)95.6-(24.9+1.6)4.62-2.92-1.56
一、口算。
2.1+0.3=6.5+1.7=0.72+0.03=6.1+0.4=
2.1+0.1=6.1-2.1=0.82-0.4=3.1-0.6=
8.4+0.6=8.5+1=0.89-0.36=7.3+0.3=
1.6-0.7=7.1-2=0.82-0.41=7.2-0.3=
3.7-0.8=7.4-1.3=0.9-0.27=5.1+0.2=
7.3-0.2=8.7-0.4=0.87+0.27=3.8-0.9=
6.8+0.3=8.9+3.9=0.86+0.05=4.6-0.3=
8.5+0.8=6.5+4.1=0.7+0.29=7.6+0.8=
二、混合运算。
0.9+0.06+3.36.4-0.19-0.8172.9+17.6-35.3
89.68+29.14+42.5767.85+27.07+86.577.35+3.87+2.75
20-(4.95+0.18)62.9+(19.6-3.5)6.85-4.02+1.7
一、口算。
1.7+0.9=8.7+4.8=0.77-0.37=2.2+0.7=
4.2+0.8=7.5+4.9=0.78+0.15=6+0.8=
5.4+0.8=9-1.7=0.64+0.17=5+0.4=
4.6+0.5=8.2+2=0.63-0.49=2.9+0.1=
8.7+0.4=7-4.1=0.6-0.36=8.5+0.9=
1.8+0.6=6.1+4.5=0.7-0.02=1.7+0.8=
8.9+0.5=8.5+2.9=0.74-0.48=3.7-0.4=
7.7+0.9=8.5+2.7=0.68+0.47=8.8-0.7=
二、混合运算。
0.6+0.45+36.1-0.55-2.4539.1+19.1+16.9
64.11-17.96+50.1582.57-12.51+18.73.78-1.49-2.12
70-(8.77+0.93)70.7+(13.1+3.3)9.69+4.8-1.78
一、口算。
5+0.7=6.3-1.8=0.61+0.1=4.2+0.9=
3.2+0.8=6-2.3=0.62-0.26=5.7-0.6=
4-0.9=8.3-1.3=0.63+0.35=1.6-0.2=
7.8-0.1=6.1+4=0.79-0.15=2.1-0.7=
1.6+0.9=6.9+3.3=0.9+0.46=8.3+0.1=
3-0.1=6.3+4.6=0.83-0.43=8.9-0.4=
6.8-0.8=6.4+2.8=0.6+0.3=2-0.2=
7+0.6=7.3+3=0.8-0.34=8-0.6=
二、混合运算。
0.6+0.1+3.89-0.33-0.6792.8+31+59
80.13+19.37+96.4787.25-13.44+42.147.2+3.64-1.47
70-(1.96+0.89)89.6-(22.6+7.7)9.49+2.7-1.23
一、口算。
5.3-0.7=8.1+1.1=0.65-0.39=3.5-0.1=
5.7+0.1=8.5-3.6=0.77-0.1=3.4-0.4=
7+0.5=8.2-0.6=0.75+0.16=2.5+0.2=
2.1-0.6=7.5-1.4=0.87+0.31=4-0.9=
4.8-0.1=6.2-2.1=0.66+0.31=7.8-0.2=
7.1+0.4=7.6+4.6=0.77+0.08=7.7-0.4=
7.1-0.7=7.4+3.9=0.89-0.24=7.4-0.3=
8.9-0.7=8.7-2.9=0.6-0.27=1.9+0.3=
二、混合运算。
0.78+0.4+4.89.5-0.18-3.8293.3+46.9-37.7
64.45-16.64+28.0473.32+21.51+81.575.95-3.98+1.34
40-(5.78+0.25)88.5-(26.4-6.8)6.8+1.56+3.62
一、口算。
1.1+0.5=8.5-0.2=0.69+0.48=5.1+0.6=
1.7-0.8=6.5-1.2=0.62+0.04=3.1+0.3=
7.7-0.8=6.7+4.8=0.75-0.09