人教版四年级数学下册小数加减法混合运算专项练习题76.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76.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76
一、口算。
6.1-0.9=6.1+2=0.88-0.07=4.2-0.6=
8.5-0.3=8.6-0.4=0.68+0.21=4.2-0.1=
7+0.2=7.6-3.5=0.78-0.13=5.9+0.5=
2.2-0.8=6-1.2=0.75-0.13=7.1-0.7=
5.2+0.3=7.4-0.8=0.81+0.3=5.9+0.9=
8.9-0.7=6.9-3.6=0.66-0.16=3.4-0.8=
3.1-0.5=7.8+4.6=0.71+0.38=6+0.5=
7.2-0.6=6.9+4=0.86-0.32=1.4-0.1=
二、混合运算。
0.9+0.45+8.97.7-0.24-4.7688.3+45-21.8
81.4+14.06+80.785.14-30.21+58.693.65+2.06+1.2
70-(9-0.53)68.4+(27.3-4.4)9.82-6.65+3.11
一、口算。
6.9+0.4=6.5-4=0.9+0.2=1.1+0.6=
7.6-0.7=6.3-0.8=0.73-0.23=3.8+0.2=
5.3-0.6=6.4-4.4=0.85-0.41=8.4-0.1=
4+0.3=8.5-3.2=0.61+0.12=5.1+0.3=
3.4+0.7=6.8-1.8=0.7-0.03=3.1-0.2=
3.5-0.9=7.4-2.6=0.7+0.22=1.3+0.1=
8.1-0.3=6.8+0.2=0.78-0.42=7+0.8=
3.2-0.5=7.5-4.2=0.77-0.17=4.3+0.1=
二、混合运算。
0.84+0.03+2.55.2-0.5-0.546.5-25.1+16.1
65.92-34.17+40.7761.68-35.69+85.589.08+3.38+3.94
60-(8.24+0.34)70.2-(12.4-6.4)6+1.37+2.69
一、口算。
4.1-0.4=6.6-0.3=0.77+0.18=7.7+0.8=
4.8-0.6=6.6-0.2=0.6+0.35=6.2-0.8=
8.5-0.5=6.6-3.7=0.75+0.15=4.8+0.7=
4+0.3=9-4.8=0.71+0.35=3+0.9=
8.5+0.3=6.2-1.6=0.73-0.15=1.8-0.5=
7+0.2=6.5-4.9=0.88+0.08=7.2+0.4=
1-0.9=8.9-4.8=0.82+0.1=3.8-0.2=
4-0.8=8.5+1.4=0.64+0.42=4+0.1=
二、混合运算。
0.64+0.02+9.68.8-0.72-3.2874+46.6-12.7
71.76-30.07+12.4389.02-35.04+48.815.28+1.97-2.32
50-(6.65+0.33)75.4-(23.8+2.2)4.15+2.25+1.82
一、口算。
3+0.4=6.1-2=0.72-0.08=4.1+0.7=
4.6-0.3=6.8-3.8=0.74-0.01=7.9+0.1=
5.8+0.7=7.4+0.4=0.67-0.07=6.1+0.2=
7.4+0.1=8.2-0.4=0.78+0.47=8.9+0.6=
5.8+0.4=8.8+3.6=0.7-0.3=4.4+0.1=
5.3-0.9=6.7+0.6=0.78-0.07=4.5-0.5=
5.3-0.7=8.1-3.3=0.67+0.37=7.5-0.2=
6.3-0.9=8-1.6=0.61+0.23=7.3-0.6=
二、混合运算。
0.79+0.22+6.87.7-0.65-0.3562.5-43+13.1
65.25+20.03+22.0765.36-35.33+21.136.6+4.79-1.79
30-(1.27-0.92)86.5+(16.7-9.9)7.49+5.88+1.53
一、口算。
4.2+0.2=7.7-0.8=0.84-0.32=6.6+0.8=
2.2+0.8=8.6-4.9=0.73+0.4=5.5+0.9=
6+0.2=7.7+1.5=0.64+0.27=1.2+0.8=
4.5+0.5=8.4-4.9=0.85-0.45=2.9+0.3=
4.1-0.7=7.2-2.4=0.6-0.03=7.4-0.9=
6.3+0.8=6.6+2.7=0.74+0.38=1-0.5=
6.4-0.3=6.2-2.5=0.75+0.36=5.6+0.7=
8.6+0.8=7.1+1.7=0.84+0.44=7.2+0.1=
二、混合运算。
0.86+0.24+2.37.4-0.79-0.2169.1-52.2+14.9
66.67-14.22+32.4160.03+28.7+24.034.25-2.7-1.39
90-(3.39+0.3)67.7+(19.9+8.9)6.52-2.55+2.03
一、口算。
5.4+0.7=7.2+0.2=0.81+0.09=6.6-0.6=
1.6-0.9=8.1-0.4=0.83+0.25=7.1+0.4=
2.9-0.9=6.3-2.9=0.63+0.48=3.7-0.5=
3.5+0.1=8.6+3.8=0.64-0.1=7.6+0.3=
2.4-0.9=6.1+4.3=0.67-0.07=5.6+0.3=
4.3-0.4=8.5-3.6=0.61+0.3=5.6+0.7=
4.6+0.5=6+3.6=0.83-0.16=6+0.6=
3.7-0.5=6.6-0.2=0.74+0.34=5.1+0.9=
二、混合运算。
0.81+0.44+0.28.6-0.48-2.5259.4+22.1+36.5
89.3-13.65+31.8665.11+42.2+19.434.72-1.43-1.86
70-(2.08-0.24)90.5-(15.2+6.4)6.55-2.72-1.3
一、口算。
2.3-0.5=8.5-1.3=0.67+0.15=4.9-0.1=
3.2+0.4=6.1+3.6=0.8-0.11=6.4-0.8=
4.4+0.3=7.4-2.4=0.67-0.43=1.3+0.2=
7.2-0.4=8.9+0.3=0.9+0.33=3.7+0.1=
6.5-0.6=7.5+0.3=0.7+0.3=2.5-0.9=
3+0.5=8.8+3.2=0.78-0.46=2.8+0.1=
5.7+0.4=6.5-4.8=0.76+0.22=4.2-0.9=
2.1+0.3=8.5+1.3=0.78+0.14=6.2-0.8=
二、混合运算。
0.89+0.22+4.67.5-0.89-2.1184.5-19.9-23.1
77.76-12.93+89.7167.51+10.59+57.828.08+1.93-4.36
40-(1.76+0.24)67.5-(23.1-7.3)7.62-3.61-3.02
一、口算。
8.7+0.3=6.3+4.2=0.62-0.27=4.9-0.6=
6+0.9=6+4.1=0.86+0.23=2.6+0.1=
7.1-0.5=6.1-0.2=0.7-0.29=7.7-0.9=
2.8-0.3=8.8-2.5=0.74-0.39=6.8-0.9=
1.6+0.8=7.1-4.6=0.66-0.3=8.7-0.3=
3.3-0.5=9-3.1=0.77-0.42=4.6-0.6=
8.9+0.5=7.7+3.5=0.7+0.49=4.8+0.7=
6.9+0.7=8.6+1.2=0.62+0.39=6.2-0.2=
二、混合运算。
0.79+0.4+9.47-0.23-0.7776.9+29.2-33
68.42+25.21+23.6689.86-35.41+63.155.57-2.05-3.18
30-(1.47+0.48)91.8-(12.1-4.9)6.58+4.81+1.4
一、口算。
3.1-0.2=8-4=0.61-0.01=7.5-0.2=
3.1-0.6=7.3+0.8=0.66-0.42=7.3+0.7=
6.7+0.3=7.2+3.6=0.88-0.29=2.2+0.4=
8.9-0.6=7.1-1.8=0.81-0.48=1-0.4=
8-0.6=6.4-0.8=0.67+0.31=1.6+0.6=
1.2-0.3=6+3.6=0.69+0.05=5.4-0.5=
7-0.6=6+3.9=0.66-0.04=1-0.7=
8.7+0.8=6.1-0.4=0.87+0.37=5.9+0.2=
二、混合运算。
0.83-0.11+7.75.5-0.87-3.1386.6-62.2-20.7
81.1-18.63+23.7886.9+19.39+40.086.01+3.28-2.71
60-(9.76+0.26)71.3-(22.5-7.9)3.85-1.62-1.6
一、口算。
6.6+0.5=8+1.8=0.73-0.38=6.4+0.2=
6+0.1=6.9-1.8=0.64-0.05=5.4-0.6=
2.9+0.9=8.5-3.4=0.78+0.11=3.7+0.6=
2.3-0.7=6.4+4.4=0.88-0.49=2.7+0.8=
8.1-0.2=6.8+3.9=0.77-0.38=3.1-0.2=
7.9+0.2=8.5+2.7=0.71+0.16=5.7-0.1=
7.5+0.4=6.2+1.6=0.68+0.47=3.4-0.3=
2.2+0.7=8.9-2.9=0.82+0.41=4.5+0.7=
二、混合运算。
0.74-0.12+3.58-0.15-2.8540.6-23.1-14.6
69.28-37.66+65.1872.79+26.1+21.234.81+2.7-2.04
70-(6.81+0.8)69.1-(21.6+3.5)7.99-2.76-2.33
一、口算。
1.4-0.1=6.3+4.6=0.89+0.38=7.7+0.1=
8.8-0.9=9-2=0.75-0.04=1.6-0.4=
7.9-0.6=6.3-4.9=0.89+0.2=4.1+0.4=
8.2+0.7=6.8-4.7=0.73+0.15=8+0.6=
6.3+0.6=7-3.3=0.71+0.21=5.8-0.8=
8.4+0.3=8.1+4.3=0.68-0.15=4.9+0.1=
5+0.8=7.1-0.7=0.87+0.19=3.3+0.9=
8+0.8=8.6+2.2=0.89-0.38=8.3+0.2=
二、混合运算。
0.73-0.39+8.85.6-0.43-3.5789.8-55+16.5
63.96+40.02+27.4883.93-48.81+55.235.14-2.68+1.3
80-(4.84-0.56)77.1-(28+5.2)4.9+1.93-1.73
一、口算。
7.8-0.4=6.2+0.9=0.89+0.44=2.6+0.1=
8.8-0.7=7.6+3.5=0.71+0.25=3.7+0.4=
8.8-0.7=7.6-3.2=0.79-0.46=7.3-0.3=
6-0.4=6.4+2.4=0.9-0.3=1.6-0.6=
7.3+0.8=8.7+3.5=0.89+0.46=1.8+0.9=
5+0.6=8.4+4.2=0.8-0.34=5.1+0.7=
8.4+0.8=8.4-2.9=0.79+0.27=4+0.5=
1.9-0.9=8.5-4.1=0.81-0.42=2.8-0.2=
二、混合运算。
0.76-0.36+2.19.7-0.81-3.1975.2-24.6+42
75.33+21.78+95.4865.95-17.67+87.148.2-5.1+1.32
60-(5.09+0.36)65.1+(26+5.7)8.83-4.39+2.16
一、口算。
3+0.1=6.9-0.3=0.65-0.34=1.8+0.6=
8.1-0.2=7.9+4.8=0.87+0.44=8.8-0.4=
2+0.3=8.5+3=0.88-0.07=8.4-0.9=
7.9+0.8=6.2-4.8=0.66-0.31=8.8+0.4=
3.4+0.6=7.4-2.1=0.6-0.49=6.2-0.8=
8.1-0.8=7.6+1.2=0.82+0.04=7.9+0.6=
4.7+0.3=6.1+2=0.66+0.16=2.2+0.2=
4.5-0.7=6.9+1.8=0.75+0.19=5.3+0.9=
二、混合运算。
0.62+0.02+6.79-0.22-4.7860.1+40.5-12.7
85.79-41.43+42.5763.38-46.28+88.178.39+6.27+1.41
70-(2.23+0.2)71.6+(19.4+7.7)6.8+2.44-2.55
一、口算。
2.4+0.2=8.5+2.8=0.81-0.31=8.6+0.3=
6.8+0.5=6.7+1.4=0.62-0.13=8.9+0.3=
8.7+0.2=6.5+0.1=0.67+0.34=6.4+0.2=
7.6+0.6=7.3-3.4=0.78+0.27=3.4+0.6=
6.9-0.3=7-3.9=0.72-0.15=4.1-0.2=
3.1-0.8=7+1=0.6-0.46=5.3-0.8=
3.8-0.2=8.3-1.6=0.6+0.42=5.1+0.5=
5.1+0.6=6.8-1.7=0.8-0.08=2.6-0.2=
二、混合运算。
0.69-0.16+2.36.8-0.34-1.6668.6-28.4-25.7
61.67+28.72+65.1667.87-27.76+30.565.25+3.51+1.68
70-(1.5-0.58)88.8-(25.1-1.6)7.05+1.53+4.49
一、口算。
8.2+0.8=8.1-0.2=0.7+0.21=1.3+0.1=
7.5-0.2=6.2+4.5=0.76-0.25=7+0.9=
6.4+0.7=9-1.1=0.87+0.05=1.3+0.3=
4.4+0.7=8.1-1.2=0.73-0.15=6.6+0.8=
8.6-0.8=6.8-4.2=0.78+0.15=4.7-0.1=
6.3+0.5=7.9+3.6=0.67+0.32=4.5+0.1=
2.7-0.7=8.4+0.7=0.82+0.25=7.3-0.5=
2.3-0.6=7.3+1.9=0.61-0.46=3.9-0.7=
二、混合运算。
0.7+0.06+4.75.3-0.48-3.5299.1+64.9+33
66.46+45.02+62.3565.61-20.27+22.325.84+2.58+3.16
50-(7.65+0.48)91-(28.1-2.7)8.37-1.22+5.33
一、口算。
5.3-0.8=7.9-3.8=0.89-0.29=4.6-0.4=
5+0.5=6.8+0.8=0.77-0.21=1.9+0.3=
1.9-0.1=8.9-1=0.86+0.15=1.5+0.1=
1.1-0.8=7.9-4.8=0.77+0.06=5.3+0.2=
7.6-0.4=8.5-4.7=0.76+0.23=4.9-0.7=
3.4-0.1=8.1-1.2=0.88+0.15=2.1-0.9=
5+0.5=9-4.7=0.78-0.27=2.4-0.8=
5.3-0.3=8.8-1.7=0.63+0.41=2.5-0.9=
二、混合运算。
0.77-0.49+4.97.3-0.59-2.4146.6-12.4-33.7
79.43-35.1+61.8570.36-31.33+37.864.07+1.24+2.32
50-(1.66+0.38)66.9-(29-1.1)6.6+2.54+1.09
一、口算。
1.5+0.1=7.9+2=0.77+0.4=2.7-0.7=
2.9-0.9=6.9+3.6=0.6-0.29=8.4-0.4=
1.9+0.1=6.8-0.6=0.66-0.3=3.5+0.5=
1.6-0.8=8.5-2.9=0.78+0.11=4.6-0.7=
1.4+0.3=8.3+3.1=0.9-0.46=7+0.2=
7.7+0.6=6.3+0.1=0.9-0.18=8.4-0.5=
6.7+0.7=8.2+0.9=0.68-0.08=3.6+0.2=
4.2-0.9=6.5-1.1=0.71+0.18=6+0.3=
二、混合运算。
0.77+0.2+3.48.8-0.9-3.187.9-19.3-37.1
70.88-21.91+85.7977.58+10.28+34.069.66+3.18-1.56
90-(6.3+0.62)91.4-(26.9-7.4)3.63-1.21-1.28
一、口算。
4.1+0.8=7.5+1.8=0.88-0.22=2.7+0.6=
1.6-0.1=6+3.1=0.83+0.05=5.7+0.8=
6.9+0.4=7.7+0.3=0.67-0.3=9+0.1=
2.1+
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