人教版四年级数学下册小数加减法混合运算专项练习题30.docx
《人教版四年级数学下册小数加减法混合运算专项练习题30.docx》由会员分享,可在线阅读,更多相关《人教版四年级数学下册小数加减法混合运算专项练习题30.docx(13页珍藏版)》请在冰豆网上搜索。
人教版四年级数学下册小数加减法混合运算专项练习题30
一、口算。
8.5+0.6=8.2+0.1=0.78+0.05=5.6+0.5=
4.3+0.9=6.1-2.1=0.66+0.49=1.2-0.9=
6.1+0.1=8.7+4.1=0.9+0.13=1+0.3=
6.7+0.1=8.1-3=0.78+0.29=7.7+0.2=
5.2+0.2=8.4+3.7=0.88-0.3=8.2+0.7=
3.3-0.9=7.4-4.8=0.61+0.3=7.5+0.1=
5.5-0.1=6.7+2.8=0.6+0.41=7.5-0.2=
3.6-0.3=7.3-3.4=0.62-0.19=1.2+0.5=
二、混合运算。
0.88-0.06+0.16.5-0.32-4.6844.7+22.6+11.7
67.55+37.18+21.2770.5-48.74+74.748.28+6.15+1.29
40-(8.64+0.36)65.1+(18.1-4.9)5.29+1.05-2.89
一、口算。
4.3-0.9=7.1-0.9=0.9-0.39=3.6-0.8=
1-0.6=7.6-2.6=0.89+0.26=7.4-0.8=
7-0.4=8-3.7=0.75-0.45=3.6-0.2=
3.3+0.1=8.9+0.4=0.9+0.01=5.8+0.8=
7.8-0.8=6.8-3.3=0.87-0.09=4.7-0.5=
5.6-0.1=7-1.8=0.73+0.13=6.5-0.2=
6.9-0.7=6.5-4.7=0.63+0.14=2.3-0.2=
6.6+0.7=8.5+2.5=0.75+0.18=7.6-0.9=
二、混合运算。
0.69+0.02+5.27.1-0.43-0.5744.6+24.9+17.1
76.48-46.15+59.5162.28+40.95+13.859.98-7.2+2.29
90-(5.39-0.76)61.9-(10.7+5.7)7.03-4.28-1.65
一、口算。
7.6+0.3=8.3+2.3=0.71-0.44=5-0.5=
8.5+0.6=8.5-3.7=0.67+0.31=1.9+0.6=
2.3+0.5=7.4+0.6=0.61+0.12=1.3-0.2=
6.2+0.5=8.1+4.3=0.71+0.26=6.7+0.7=
1.6+0.9=8.4-0.2=0.86+0.27=1.5-0.8=
5+0.4=6-4.2=0.67+0.03=5.2+0.6=
5.7+0.8=7.9+2.7=0.84+0.26=8.4-0.4=
5+0.9=6.7-4.7=0.88+0.34=4.5+0.4=
二、混合运算。
0.61-0.01+9.45.3-0.23-0.7743.4+25-14.9
79.26-20.27+88.3877.32-47.13+14.695.47+3.28+1.57
80-(8.87+0.58)88.4+(10.9+1.1)9.63-1.51+4.91
一、口算。
1.3-0.5=7.8+3.9=0.83+0.19=4.6+0.4=
8.4-0.9=7.3+2=0.89+0.17=3.5-0.6=
3.4-0.9=6.5+3.9=0.81+0.34=8.4+0.5=
6.4+0.1=6.6-0.2=0.71+0.44=3.6-0.7=
8-0.6=7.4-2.8=0.85+0.18=8.1+0.9=
1.5-0.7=7.3+0.8=0.84-0.35=8.9-0.2=
6.1-0.5=7.6-1.3=0.8-0.3=5.8-0.9=
4.4+0.4=8.2-0.2=0.6+0.13=2.9-0.3=
二、混合运算。
0.89-0.11+5.89.4-0.15-4.8578-59.6-10.2
72.7-30.2+94.0260.5+40.64+44.279.65+1.25-1.04
90-(1.03-0.4)96.7-(28.2-3.1)5.92-1.94-1.54
一、口算。
5.7-0.2=6.6-2.1=0.72+0.1=8.9-0.9=
1.7-0.3=8.2+0.7=0.73-0.38=8.4-0.6=
6.2+0.5=6.8+3.8=0.78+0.27=7-0.1=
5.4+0.3=6-0.1=0.9-0.15=1.9+0.1=
3.8+0.3=6.6+3.6=0.9+0.04=7.3-0.9=
3.4+0.2=8.4-3.1=0.75-0.28=8.6-0.7=
7.7+0.5=7.6-2=0.6+0.34=5.7+0.1=
1.5+0.6=6.6+2.1=0.89+0.19=3-0.4=
二、混合运算。
0.83-0.03+5.39.3-0.55-2.4549.6-15.6-13.9
65.39+22.47+98.8686.22+15.02+25.554.28-1.33+2.11
60-(6.75+0.17)64.7-(10.5+1)8.85-1.8-6.84
一、口算。
7.8-0.1=8.4+1.1=0.72+0.41=6.6-0.7=
6.3+0.6=6.6-2.3=0.78+0.17=1.4+0.6=
4.4+0.3=6.4-0.5=0.89+0.25=2.6-0.1=
3.7+0.6=6+1.6=0.65+0.05=1.7-0.2=
1.2+0.4=8.4-0.7=0.85+0.34=1.7-0.9=
3.1-0.5=6.1-2.8=0.7+0.42=1.8-0.4=
4.9-0.6=8.7+3.9=0.67-0.33=5.2-0.4=
5.8-0.5=7.4+2=0.75-0.24=1-0.6=
二、混合运算。
0.9-0.27+3.35-0.45-2.5593.3+52.8-34.9
73.19+17.53+40.279.17+30.36+90.057.02+3.55+3.36
50-(3.1+0.69)99.5+(22.4-7.4)9.22-1.54+2.16
一、口算。
3.3+0.3=8.8+2.9=0.78+0.04=1.7+0.2=
3.5-0.6=8.2-2.3=0.67+0.02=8.1-0.9=
1.1+0.7=7.1+3=0.83-0.32=2.6+0.2=
2.4-0.3=7.9-0.3=0.82-0.28=8.6+0.1=
2.1-0.5=8.2+0.7=0.64+0.15=1.1+0.5=
4.2+0.7=7.3+1=0.79+0.37=7.9-0.2=
4.6+0.6=6.3-1.3=0.83+0.18=6.7+0.9=
3.8-0.9=6.9+3.3=0.73+0.44=7.5+0.5=
二、混合运算。
0.9+0.02+9.75.4-0.71-0.2990.7-20.4-64.4
75.03+10.53+40.5274.42+20.35+77.274.27-1.31+1.82
90-(3.33+0.92)88.9+(14.5-6.6)6.92-2.94+2.67
一、口算。
6.8-0.6=6.5-2.5=0.66-0.18=7.5-0.4=
4.1+0.7=7.1+2.6=0.83-0.12=3.5+0.4=
4.4+0.8=7.8+1.2=0.7+0.24=5.2+0.9=
8.6-0.2=6.8+1.4=0.75-0.27=7.1-0.6=
1.4+0.9=8.6-1=0.65+0.19=1-0.8=
2.8-0.1=9+0.9=0.82-0.13=7.7+0.4=
2.7+0.1=6.6+3.6=0.77+0.19=7.1+0.8=
1.3+0.8=7.3-3.4=0.72-0.01=3.8-0.2=
二、混合运算。
0.71+0.1+5.45.6-0.24-1.7655.3+27.4-15.3
88.87+29.1+98.1585.29-40.27+29.935.35+2.59-1.03
20-(4.05+0.31)91.8+(24.1-9.6)6.4-1.46-1.72
一、口算。
4.6+0.2=8.2-4.6=0.76+0.06=8.8+0.6=
7.2-0.2=7.7-1.6=0.85-0.43=8.6-0.8=
6.8+0.4=8.1-1.7=0.61+0.29=1.1-0.9=
8.3+0.6=7.9+2=0.87-0.19=2.8-0.4=
5.5-0.5=7.1-3.8=0.72-0.08=8.1-0.2=
4.6+0.4=6.2+4.3=0.65-0.32=7.7+0.4=
8.1-0.9=6.9-1.2=0.74+0.4=2+0.5=
1.1+0.7=6.6+3.1=0.88+0.48=7.7+0.5=
二、混合运算。
0.64-0.37+0.29.9-0.89-0.1138.5+13.8+21.6
72.18-32.84+50.2286.55+21.05+92.646.85+3.55-3.24
70-(5.73+0.15)82-(14.2+6.2)8.32+6.38+1.69
一、口算。
1.6-0.7=6.7+1.9=0.75+0.16=3.7-0.8=
7.8-0.5=6.2-1.6=0.88+0.33=6.9+0.1=
8.1-0.4=6.9+1.8=0.64+0.31=8-0.1=
3.4-0.1=7.1-3.8=0.67-0.21=8.3+0.9=
5.7+0.4=6.4+3=0.65-0.26=3+0.6=
3.2-0.3=6.7-4.8=0.79-0.4=3.3-0.6=
4.1-0.7=6.8-2.6=0.81-0.07=5.9+0.9=
2.8+0.9=6-4.6=0.75+0.49=1.3+0.8=
二、混合运算。
0.7+0.12+8.96.2-0.32-0.6868.2-28.2+31
89.33-30.56+67.5180.15+41.93+33.357.74+2.63-3.97
50-(2.68+0.62)79.8+(11.3-2)6.48-3.22-1.38
一、口算。
4+0.6=8.2-4.9=0.66+0.05=6.6-0.2=
1.9+0.2=7.6-2.7=0.68+0.08=1.7-0.1=
5.7-0.1=8.8+1.4=0.61+0.43=5.4-0.1=
2.5+0.4=8.9+0.4=0.79+0.2=8.1+0.6=
8.8-0.2=7.5-0.9=0.69-0.21=7.9+0.2=
7.2-0.2=7.6+3.7=0.85+0.35=7.6-0.7=
2.1+0.8=6-1.5=0.7-0.32=2.8+0.8=
7-0.6=7.1+0.4=0.72-0.21=3.8+0.6=
二、混合运算。
0.74+0.01+8.77.6-0.73-2.2776.2-46.3-21.1
79.54+46+29.0586.76+39.89+61.495.4-3.04+1.3
80-(7.23+0.51)69.8-(11.8-7.3)4.92+1.63+2.12
一、口算。
5.9+0.1=6.9-0.2=0.72-0.27=6+0.3=
2-0.4=8.1+2.8=0.68+0.25=6.6+0.4=
7.9+0.7=8.5+4.7=0.7-0.11=7.2+0.2=
2.7-0.6=6.1+3.8=0.66+0.33=3.6-0.6=
8.7-0.7=7.9+3.7=0.67-0.38=7.2+0.1=
6.1+0.2=7.1-1.4=0.83+0.45=8.7-0.8=
7.8-0.8=7.1+1.3=0.71+0.05=2.1+0.5=
1.1+0.3=7+2.2=0.84+0.32=8.8-0.6=
二、混合运算。
0.84-0.39+3.86.4-0.64-4.3674.4+30.6+27.8
68.42-20.15+26.3960.78+38.94+18.968.62+7.1-1.05
60-(5.09-0.32)90.8+(20+5.2)4.54-1.76-1.08
一、口算。
4-0.3=6.9+0.3=0.69-0.15=5+0.4=
5.2+0.9=8.3-2.1=0.76-0.42=1.8-0.4=
9+0.9=6.6-3.7=0.64+0.16=7-0.8=
5+0.4=7.2-0.9=0.67+0.14=4.3+0.9=
5.3+0.3=7.8-3.6=0.69+0.37=1-0.2=
6.9-0.8=8.7+2.6=0.77-0.17=3.1-0.2=
1.1-0.9=7.5+4.1=0.68+0.12=4.9+0.2=
7-0.2=7.3+3.8=0.6+0.24=8.7+0.4=
二、混合运算。
0.62+0.33+5.68.7-0.59-3.4197.4-60.9-22
88.37-44.72+62.3770.89-47.74+84.034.04+2.24-1.68
40-(2.72-0.41)85.4+(18.5+3.7)7.02-4.03+2.98
一、口算。
8.5-0.8=7.8+4=0.82+0.2=4.9-0.8=
8.7-0.7=7.3-4.2=0.62-0.18=6.3+0.3=
3.4+0.7=8.7-3=0.87+0.42=3.4+0.1=
9-0.4=7.5-1=0.66+0.32=7.1+0.1=
7.7-0.2=6+1.3=0.66+0.29=6+0.4=
5.3+0.6=8.1+1.4=0.82-0.02=8.2-0.6=
5.9+0.4=6.4+3.9=0.6+0.17=5+0.8=
6.1-0.2=6.1+2=0.87-0.47=6.9+0.9=
二、混合运算。
0.87-0.34+8.35-0.28-2.7272.1-12.7+49
75.8+44.83+47.4362.4+16.12+85.519+1.85-4.58
40-(6.9+0.35)88.8-(20.9+9)8.17-4.18-3.92
一、口算。
4.9-0.8=7.1+4.1=0.89-0.02=4+0.1=
2.2-0.5=7.5+4.8=0.74+0.25=6.6-0.4=
1.8+0.8=7.1+4.7=0.79-0.2=3.5+0.8=
3.8+0.9=7.9-0.8=0.75+0.1=8.3-0.5=
2.1+0.6=7.2+2.9=0.87-0.23=8.7+0.4=
5.2-0.9=7.2-4.5=0.7-0.25=3.3-0.1=
4.3+0.1=8.9+1.2=0.72-0.44=4.9+0.3=
1.1+0.2=8.6-0.1=0.63-0.31=2.2+0.1=
二、混合运算。
0.86-0.33+8.48.1-0.68-2.3282.6+15.3-10
70.7-44.96+48.0372.31-26.15+25.198.68+7.11-1.17
50-(6.76+0.39)83.2+(25.9-4.5)6.4+2.69+2.5
一、口算。
3.6-0.4=6.6+0.1=0.83-0.29=1.9-0.8=
1.7-0.6=7.8+2.8=0.88+0.1=8+0.5=
6.8-0.1=8+0.2=0.78+0.36=2.6-0.1=
3.9-0.4=9+4.9=0.87-0.33=3.2-0.9=
4.1+0.6=6.1+2.6=0.82-0.25=7.9+0.7=
3.2+0.6=8.1+1.6=0.68-0.13=3.2+0.1=
6.8+0.2=7.3-1=0.69+0.28=1.1-0.8=
2.8-0.5=7.1+3.6=0.85+0.39=2.3+0.8=
二、混合运算。
0.62+0.27+1.39.8-0.78-2.2272.5+10.8-44.2
61.87-47.86+47.5478.78-45.24+40.229.54+6.24+2.65
40-(4.45+0.6)70.5+(22.7+4.9)6.04-1.1-4.1
一、口算。
1.2+0.1=7.7-2.1=0.63+0.45=2.5-0.9=
5.8-0.6=6+0.6=0.87+0.06=7.9-0.3=
4.5+0.2=8.1-2.2=0.68-0.01=6.5+0.6=
3.3+0.1=7.8-1.4=0.69-0.26=7.7+0.3=
6.6+0.2=8.2+0.6=0.89+0.13=3.1+0.6=
6.9-0.3=6.6-3.1=0.9-0.38=6.9-0.5=
5.5+0.9=6.3+2.7=0.74+0.03=8.6+0.3=
3.3+0.1=8.6-4.6=0.84+0.14=4.9+0.1=
二、混合运算。
0.78+0.06+4.46.6-0.45-3.5588.3+10.6-48.8
62.67+28.39+93.8770.68+45.19+77.546.7-4.53+1.93
20-(5.82+0.38)64.1-(16.2+1.4)4.64+1.66-2.2
一、口算。
8.4-0.8=7.6-2.8=0.71+0.16=4.5-0.6=
4.8-0.9=8.8-2.4=0.75-0.09=3.2-0.6=
5.8-0.3=8.1+0.9=