人教版四年级数学下册小数加减法混合运算专项练习题43.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43.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43
一、口算。
2.5-0.8=8.7+0.4=0.6-0.44=3.5-0.2=
5.9-0.3=6.9-3.6=0.85-0.45=4.5+0.3=
3.9+0.3=6.1-1.6=0.75-0.34=8+0.1=
5.7+0.3=7.3-2.4=0.7+0.18=4.1+0.7=
4.4-0.5=7.9+2.9=0.77+0.32=4.9+0.4=
8.2-0.6=6.4-2.8=0.64+0.11=5.8-0.5=
5.5+0.8=8.7+4.5=0.8+0.05=3.8+0.9=
2.3-0.1=8.5-0.1=0.6-0.23=1.5-0.2=
二、混合运算。
0.62-0.43+0.99.8-0.17-4.8349.7-16.5+22.2
73.47-45.67+37.4269.99-18.32+73.818.35-4.01-2.75
20-(3.4-0.37)85.4-(15.2-4)9.31-7.38+1.21
一、口算。
2.6+0.2=8.5+1.3=0.77+0.01=4.6-0.4=
4.7+0.4=6.5+4.7=0.75-0.3=5.3-0.8=
3.3+0.5=8.9-3.7=0.84-0.25=6.8+0.5=
7.4-0.3=8.1+1.9=0.74+0.4=4.4-0.8=
1.4-0.1=6.3+1.7=0.62-0.07=7.2+0.5=
5.9-0.5=7.6+0.8=0.63+0.09=1.5-0.6=
4.3-0.3=7.4+4.7=0.72-0.41=2.1-0.5=
3.1-0.8=6.4-3.5=0.77-0.15=1.9+0.9=
二、混合运算。
0.74+0.11+6.99.5-0.54-2.4640.2+15.5+12
62.58-10.35+33.178.03+46.9+26.054.82+2.23-1.63
80-(8.42+0.4)90-(11-3.4)4.92-2.56+1.29
一、口算。
4.4+0.9=7.2+4.7=0.88+0.39=9-0.4=
2.7+0.4=7.7+0.4=0.81+0.41=8.4+0.6=
7.1+0.2=7.6-4.5=0.89+0.46=1.1-0.4=
7.9-0.5=6.5+0.3=0.72+0.1=7+0.8=
6.8-0.1=8.4+0.3=0.82+0.46=8.8-0.7=
7+0.1=7.9-2.5=0.62+0.04=5.8+0.5=
7.6+0.7=6.9-1.4=0.62-0.25=7.2+0.7=
5.4-0.7=7.6-3=0.79-0.44=1.9+0.3=
二、混合运算。
0.87-0.26+6.98.6-0.42-0.5869.3+33.6+12.3
77.94+41.45+71.0267.06-17.31+51.249.52-2.12+1.97
20-(2.26-0.55)82.2+(13.3-5.7)4.27-1.61-1.19
一、口算。
4.9+0.4=8.6+1.1=0.8+0.43=2.3-0.9=
4.8-0.2=6.7-4.6=0.79+0.21=3.8-0.7=
6.2-0.3=7.2+0.7=0.68+0.02=3+0.6=
5.2+0.5=6.2+1.7=0.74-0.23=2-0.3=
8.8+0.8=6.4-3.6=0.84-0.15=4.3+0.8=
6-0.9=6.1+2.5=0.73+0.26=5.2-0.5=
3.2-0.4=6.6-3.3=0.63+0.24=1.3+0.3=
7.1+0.3=6+3.8=0.9+0.37=5.1-0.1=
二、混合运算。
0.88+0.49+0.36.6-0.24-1.7678.3+58.6+11
62.65+15.01+80.8284.08-39.23+20.678.67-1.95+4.55
60-(6.16-0.19)89.4+(26.3-3)8.89-7.32-1.14
一、口算。
7.7-0.7=8.7+0.5=0.66-0.45=5.4-0.6=
9-0.8=6.1-2=0.7-0.33=1.1+0.7=
3.7+0.3=6.7+2.8=0.73+0.44=7.7+0.2=
3.2-0.3=8.9-1.1=0.61-0.07=4.3-0.7=
8.3+0.6=7.6+4.3=0.69-0.17=6.8+0.7=
8.1+0.7=7.4+4.5=0.78+0.27=8.4+0.3=
6+0.1=6.3-0.8=0.77-0.47=1.2+0.7=
5.9-0.8=6.1+4.1=0.74+0.42=2-0.7=
二、混合运算。
0.89+0.09+5.95.8-0.36-0.6493.5+73.8+17.6
65.88+35.46+33.0389-46.1+44.325.01-1.26+1.66
80-(4.12+0.48)94.6+(20.3+8.2)8.17+3.61+3.41
一、口算。
2.7-0.1=6-4.9=0.81+0.46=6.7+0.5=
5.1-0.2=6.4-3.7=0.68-0.06=5.7+0.8=
2.1+0.8=6.8+2.7=0.77-0.47=4.4-0.8=
7.3-0.6=6.9+1.5=0.69-0.11=4+0.6=
8.4-0.3=6.2+2.2=0.72+0.1=8.2+0.6=
7.9+0.2=6.3+1.8=0.69+0.4=2.5+0.3=
7.8+0.8=7.3-1.9=0.89-0.01=4.2-0.4=
3.5+0.9=6.2+0.3=0.81-0.47=8.9-0.1=
二、混合运算。
0.85+0.23+5.25.8-0.4-3.680.8-53.1+15
71.46-33+70.8279.69+16.99+30.278.25-3.46+1.81
50-(4.29+0.55)69.2+(20.7+9.7)9.42-2.24+2.79
一、口算。
3.3-0.5=8.2-1.5=0.68-0.03=8.7+0.4=
4.6+0.9=7.6+1.8=0.61-0.39=5.8-0.9=
2.8-0.7=6.7-4.6=0.84+0.45=4.8-0.5=
5.5+0.1=7.3+4.8=0.69-0.28=6.2+0.7=
2.7-0.4=7+1.6=0.76-0.45=9+0.1=
6.9+0.9=6.4+4.9=0.64-0.13=5.2-0.8=
5.3+0.9=6.6+1.8=0.64+0.45=1-0.5=
2+0.3=7.8+0.7=0.79-0.24=5.6-0.4=
二、混合运算。
0.72-0.26+3.28-0.67-1.3394.7-27.2-13
73.95-46.94+47.4881.68+41.52+26.055.32-1.63+2.48
50-(5.96-0.7)63.1+(21.6-3.4)4.84+2.36+1.84
一、口算。
2.1+0.3=6+3.5=0.79+0.02=1.3+0.2=
5.6-0.8=7.9+1.8=0.86+0.42=2+0.6=
3.8-0.3=8.6+1.3=0.65+0.38=8.6+0.4=
1.1+0.3=8.2-1.4=0.9+0.23=2.4+0.2=
1.1-0.8=8.3-2.4=0.74+0.15=7.6+0.9=
4+0.8=7.9-0.2=0.87-0.19=2.8+0.7=
6.9-0.3=8.6-2.8=0.65+0.48=1.6+0.2=
8.4+0.7=7.1-3.7=0.83-0.39=5.5-0.3=
二、混合运算。
0.7-0.2+6.26.3-0.33-4.6735.3+15.7-13.1
78.45+19.52+64.4265.57+39.92+423.65+1.54-1.24
50-(3.33+0.34)84.9-(11.5-1.6)8.83-5.29+2.66
一、口算。
8.2-0.7=6.5+2.8=0.66+0.4=1.6+0.6=
8.8-0.7=6.8-3.6=0.82+0.28=3.2-0.4=
7.5+0.6=7.7+4.4=0.87+0.05=4.3+0.3=
6.5-0.9=6.2+2.9=0.71+0.33=5.5+0.4=
1.7+0.8=6.7-1.3=0.61-0.42=8.5-0.9=
7-0.1=8.5+2.1=0.75+0.16=9+0.3=
7.8-0.6=6.1+4=0.9-0.22=1.1+0.5=
6.2-0.5=8.5+4.8=0.84-0.38=4.6+0.5=
二、混合运算。
0.87-0.17+3.46.2-0.87-0.1342.8+10.5+23.4
79.14-34.39+37.3588.68-47.91+35.165.38+2.82-1.27
60-(9.9-0.39)91.4-(12.1+4.4)7.57-5.89-1.31
一、口算。
2.5+0.9=7.6+1.8=0.72-0.32=8.2+0.7=
3.4+0.6=6.2+4.1=0.78+0.3=8.5-0.1=
8.6+0.1=6.5-3.3=0.63-0.22=9-0.3=
8.1+0.1=6.9+1.4=0.84-0.33=3.1-0.6=
7.7+0.1=6.1+0.9=0.71+0.2=9+0.3=
6.6-0.8=6.1-2.9=0.64-0.34=7.7+0.2=
7.5-0.7=8.5+4.9=0.82-0.23=6.9-0.6=
1.7-0.8=6.5+3.3=0.61+0.21=7.5-0.2=
二、混合运算。
0.66+0.09+8.16.1-0.55-4.4577.2-41.4+16.6
79.69+37.11+19.5465.33-46.36+76.147.15-1.97-3.31
40-(4.72+0.31)78.7-(20.4+5.4)5.28-1.53-1.59
一、口算。
3.4-0.9=6-4.8=0.81+0.18=1.3-0.4=
6.7+0.9=6.2+4.9=0.71+0.33=5.7+0.6=
4.3+0.1=7.2+2.6=0.79-0.27=5.4-0.2=
8.6+0.2=8.7-1.6=0.66-0.05=3.7+0.3=
1.4+0.8=7.1-0.8=0.87+0.15=6.9+0.1=
5.2-0.6=8.3+1.3=0.81+0.31=1.6-0.9=
4.7-0.5=7.8+2.8=0.9-0.46=3.5+0.8=
6.5-0.1=7.3+0.7=0.66-0.39=6.4-0.8=
二、混合运算。
0.73-0.15+3.46.9-0.35-3.6559.3+17.4-31.3
72+27.37+90.671.8+18.29+24.243.71-2.07+1.09
20-(5.23-0.63)84.3-(25.1+1.6)9.55+8.05+1.27
一、口算。
4.7-0.2=8.1-4.5=0.78-0.16=1.5+0.4=
2.8+0.5=7.7+1.2=0.71+0.06=4.2-0.4=
1.3+0.7=6+2.3=0.89-0.13=1.9+0.9=
1-0.6=8.2+4.8=0.81+0.14=7.1+0.2=
2+0.2=6+1.1=0.86+0.31=5.8+0.9=
1.4-0.9=7.3+1.5=0.7+0.49=9-0.5=
7.9-0.1=8.4+0.2=0.6+0.26=4.8-0.2=
5.3+0.5=8.1-0.2=0.81+0.45=3.5-0.9=
二、混合运算。
0.82+0.2+5.99.8-0.14-4.8646.9+13.4+32.6
74.94-10.08+28.4274.33-35.69+89.628.7-3.96-3.08
80-(6.14-0.54)81.7-(22.7-3.8)3.54+1.58+1.51
一、口算。
1+0.2=8.4+4.1=0.77-0.18=7.5-0.1=
6.8-0.7=6.5+3.8=0.61-0.37=5.8+0.1=
4.8+0.6=8.6-1.4=0.72-0.12=6+0.3=
5.7+0.1=6.8-1.6=0.88+0.21=5.9+0.9=
7.8-0.7=6.6-1=0.67-0.11=8.6+0.4=
6.5+0.4=7.5+3.3=0.89+0.16=6-0.2=
7.2-0.8=8+2.7=0.68+0.49=7.1-0.6=
4.3+0.1=7.3-3.7=0.84+0.31=7.4-0.2=
二、混合运算。
0.65+0.36+1.95-0.36-2.6472.2-33.3+23.2
71.82+48.06+58.7170.02+25.58+12.295.69+3.25+1.31
20-(7.74+0.19)84.6-(20.1-1.5)5.51+1.53+2.61
一、口算。
8.6-0.3=6.9+4.1=0.8+0.35=6.3-0.9=
5.5-0.7=6.7-3.4=0.64-0.2=8.5+0.1=
8.9+0.6=8.4+2.6=0.83-0.32=2.3+0.1=
5.7+0.5=6.6+3.1=0.65-0.05=5.8-0.1=
5.8-0.8=9+0.2=0.89-0.34=3.8+0.9=
8.6-0.6=6.9-1.4=0.85+0.4=8.8-0.6=
4.2-0.4=6.6+0.7=0.76-0.18=1.1+0.8=
6.1+0.1=7+3=0.75+0.2=7.1-0.6=
二、混合运算。
0.61-0.39+4.28.2-0.8-4.298.8-43-44.3
84.81+41.91+94.9777.55+30.06+21.256.89-1.07+4.49
90-(1.38-0.34)78.2-(19.5+4.8)6.02-1.52-2.98
一、口算。
6.1-0.9=7.1-0.7=0.72-0.36=2.1-0.5=
6.6-0.1=7.8+4.9=0.74+0.39=5.5-0.3=
7.8-0.2=6.9+4.7=0.87+0.21=4.4-0.6=
8.4+0.8=8.3+2.5=0.6+0.08=1+0.5=
6.9-0.5=8.3+0.7=0.63+0.29=4.3+0.1=
3.9-0.4=6+2.7=0.6+0.33=7.7-0.9=
4.1+0.4=6.8+2.1=0.84-0.12=4.2+0.6=
8.7-0.5=7-2.6=0.66+0.47=5.4-0.5=
二、混合运算。
0.74+0.23+1.29.5-0.55-3.4592.4-55.4+18
73.95-30.92+46.667.74-36.13+75.165.96+2.13+2.87
60-(6.65+0.19)88.1-(27.2-1.1)6.81+5.24+1.12
一、口算。
4.1-0.2=7.6-3.4=0.63+0.16=2.4-0.7=
6.8-0.2=6.4+0.1=0.89+0.04=8.9-0.3=
1.1+0.2=6.6-0.3=0.63-0.29=8.4-0.2=
2+0.7=6.6-0.4=0.88+0.17=3.9+0.9=
7.3-0.1=6.5+0.4=0.82-0.1=8.8+0.5=
3.9-0.2=7.8-2=0.72+0.42=3-0.6=
6.5-0.5=7+3.3=0.64+0.44=6.2-0.7=
6.5+0.4=7.7+2.1=0.82-0.01=8.8-0.2=
二、混合运算。
0.83+0.34+2.26.4-0.67-4.3377.1+37+15.3
66.55+11.85+80.2284.22-40.04+50.084.94+3.43+1.42
30-(6.3-0.57)68.4+(17.1-8.4)3.8-2.22+1.18
一、口算。
6.5-0.6=8.8+0.5=0.65+0.17=6.4-0.1=
3.1+0.6=7.2-4.4=0.6+0.21=8.2+0.1=
7.4+0.9=7.6-2.4=0.6+0.48=5.8-0.5=
4.7+0.2=7.7+3.7=0.79-0.48=5.1-0.1=
5.8-0.7=7.8+0.7=0.72+0.48=7.5+0.3=
2.5+0.9=9-4.3=0.65-0.4=4.2+0.7=
4.1-0.1=6.3-4.1=0.74+0.1=3.8-0.6=
2.2+0.5=8.4+0.5=0.81-0.06=2+0.7=
二、混合运算。
0.83+0.47+0.46.4-0.76-1.2464.6+43.9+19.3
73.4+13.91+33.8986.98-41.77+59.515.14+2.24+2.28
40-(1.53-0.19)86.3-(24.2+1.1)4.16+1.83+1.6
一、口算。
4.9+0.1=7.3+4.7=0.68-0.46=6.7-0.3=
3.5-0.8=8.4+2.5=0.66+0.28=7.6-0.9=
3.1-0.4=
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