人教版四年级数学下册小数加减法混合运算专项练习题148.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148.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148.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148
一、口算。
3.1-0.8=7.8-0.6=0.62+0.36=8.1+0.2=
2.1+0.4=6.7-2.6=0.71+0.29=3.2-0.1=
7.3+0.5=7.7-2.7=0.63+0.2=8.1-0.7=
7.1+0.2=8.5-0.2=0.69-0.16=8.8+0.6=
8.4+0.8=6.6-4.3=0.83-0.12=1.3-0.3=
6.4-0.7=7.9+0.9=0.62-0.33=8.2+0.2=
2.7-0.9=7.6+0.3=0.63-0.39=1.3-0.9=
6.5-0.6=7.2-3.9=0.7-0.03=4.7+0.3=
二、混合运算。
0.67-0.3+0.79.2-0.53-0.4740.4-18.4+18
85.28-18.41+51.8573.98-40.24+23.038.16+5.19-1.05
30-(5.53+0.47)97.3-(10.8-5.6)5.79-2.51-2.93
一、口算。
3.9+0.3=7.2+4.2=0.6+0.29=1+0.4=
5.2-0.3=7.6-3.8=0.71-0.07=4.2-0.4=
7.4-0.2=7.5-4.1=0.65-0.18=7.2+0.8=
3.9+0.6=7.5-4.5=0.88+0.05=2.8-0.1=
7.6+0.4=6.8+3.6=0.79-0.16=2.3+0.9=
1.4+0.1=7.4+0.8=0.61-0.26=5.7+0.6=
5.4+0.5=7.4-0.6=0.6-0.05=8.2+0.4=
8.6-0.8=8.4-3.9=0.63-0.29=3.6+0.8=
二、混合运算。
0.71+0.01+0.65.2-0.14-2.8693.7+70.7-17.7
62.56+12.87+97.4573.42-42.23+36.185.47+2.72-2.18
80-(2.8+0.41)95.5+(18.7-3.5)4.39+2.49-1.87
一、口算。
2.8+0.9=7.5+3=0.72+0.32=6.6+0.3=
3.5-0.8=8.3+3.9=0.67+0.05=3.1+0.6=
4+0.1=6.3+1.5=0.61+0.32=1.7-0.8=
3.8-0.2=7.4-3.2=0.85-0.31=5.9+0.3=
2.5-0.5=8.3+4.7=0.8-0.46=2.3+0.7=
6.2+0.7=7.1+1.1=0.9-0.17=2.6-0.2=
8.1-0.9=7+1.5=0.89+0.47=3.1+0.3=
3.8-0.7=8.1+3.5=0.83+0.15=6.5-0.6=
二、混合运算。
0.62+0.4+2.76.6-0.57-1.4374.1+37.4+22.7
70.62-38.39+16.3470.75-46.68+28.088.68+1.44-5.81
80-(4.28+0.3)94.4-(22.2+6.8)7.06+4.05-2.15
一、口算。
1.9-0.4=7.9+1.4=0.83-0.39=3.5-0.8=
5.7+0.7=6.1-2.2=0.77-0.3=4.7-0.4=
5.3+0.4=8.9+1=0.72-0.16=6.7+0.2=
6.7-0.4=6.1-1.8=0.86-0.36=1.6-0.8=
8.7-0.3=8.4-2=0.67-0.33=6.2+0.2=
7.8+0.3=7.9-3=0.67+0.34=2.4+0.1=
4.2+0.9=8.1+0.3=0.6+0.04=7.9+0.6=
3.5+0.2=7.5+0.3=0.87-0.33=8.2-0.9=
二、混合运算。
0.68-0.09+6.26.2-0.18-2.8287.1+32-44.3
85.36+47.01+33.3489.79-35.56+30.519.21+6.57+1.82
50-(9.92+0.9)96.2-(28.3+6.6)9.82-8.15+1.43
一、口算。
5.3-0.8=7+2.7=0.64-0.31=7.8+0.2=
2.6-0.3=7.4+2.8=0.62+0.49=4.1+0.2=
8+0.6=7.6-0.4=0.8+0.39=1+0.4=
1.9+0.9=7.2-1.9=0.72+0.27=7.8+0.1=
4.4-0.3=7.6-4.2=0.64+0.46=9-0.6=
8.3+0.2=8.7-1.1=0.89+0.27=5+0.1=
1.4+0.7=8.5-2.9=0.63-0.04=1-0.8=
6.7+0.2=6.6+4=0.77+0.19=8.6+0.2=
二、混合运算。
0.66+0.45+9.77.2-0.71-4.2943.4+20.4+15.5
88.95-43.59+33.1475.81+10.47+86.844.04+2.48-1.18
40-(1.33+0.44)74.4+(22.9+5.7)4.54+3.04-1.18
一、口算。
4.7+0.6=7.4+4.6=0.69-0.22=6.8+0.9=
4+0.5=7.3-4.3=0.73+0.31=3.7+0.5=
5.5-0.6=6.5+4.3=0.67+0.14=5.3+0.8=
1.7+0.2=7.7+4.2=0.73+0.28=1+0.4=
8.5-0.1=8.1+3.5=0.69-0.22=7.1+0.1=
2.4+0.6=8.5-4.9=0.63+0.15=7.2-0.8=
4+0.5=7+0.2=0.68+0.17=6.5-0.1=
5.2+0.5=7+3.9=0.67-0.38=7.1+0.7=
二、混合运算。
0.85-0.35+5.95.9-0.77-4.2384.8-13.4+19.8
61.62-23.78+89.6877.3+47.52+75.514.83-2.26+1.52
40-(8.71+0.69)85.5-(13.9-1.4)5.1-2.58+1.28
一、口算。
5.6-0.5=7.6+3.2=0.62+0.01=1.5-0.4=
3.1-0.6=8.6-2.9=0.7-0.23=3+0.4=
1+0.5=6.4-4.3=0.73-0.43=3.5-0.4=
1.6-0.9=8.9-0.7=0.6+0.31=4.3+0.4=
6.6+0.9=7.9+3=0.8+0.21=5+0.6=
5.3+0.4=8.9+3.6=0.81+0.37=8.3-0.8=
8.4-0.2=6.2+0.2=0.9-0.49=1.5-0.1=
1+0.1=6.9+3.2=0.9+0.11=8.6+0.6=
二、混合运算。
0.74-0.23+0.48.7-0.8-3.280.3+45+13.9
61.94-43.1+23.6389.53+11.89+76.743.62-1.98-1.17
20-(5.54+0.34)93.5+(26.1+9.6)7.89-6.38+1.23
一、口算。
1.3+0.6=6.9+2.4=0.76-0.46=8-0.1=
8.6-0.6=7.3-1.7=0.66+0.45=6.9+0.7=
7.6+0.5=7.6-1.6=0.62-0.17=1.6-0.4=
2.9-0.8=6.5+1.2=0.85-0.41=4.1+0.9=
1.3+0.1=8.4-3.8=0.85-0.33=2.8-0.3=
1.1+0.1=6.9-2.4=0.86-0.07=4.1-0.4=
2.8-0.2=7.7+2.9=0.77-0.43=7.2-0.6=
2.5-0.4=6-1=0.79+0.36=2.4-0.2=
二、混合运算。
0.88+0.1+3.28.7-0.4-1.654.8-33+19.5
67.68-22.12+61.5465.3-29.99+97.134.84+3.31+1.12
30-(2.46+0.2)63.4+(21.5-6.2)5.28-2.79+2.23
一、口算。
5.7-0.4=7.3-0.1=0.9+0.43=3.6+0.8=
1.1-0.5=6-3.6=0.74-0.05=7.1-0.3=
2.1-0.6=7.8+2.2=0.63+0.12=7.8+0.8=
5.4+0.1=7.8-3.2=0.64+0.05=2.4-0.1=
1+0.9=8.5-3.9=0.85+0.03=5.9+0.4=
5+0.3=7.5-3.5=0.72+0.05=3.7+0.6=
5.5-0.3=7.2+3=0.82+0.01=7.8+0.2=
7.1+0.6=6.7-0.5=0.77-0.01=8.3+0.2=
二、混合运算。
0.69-0.33+5.45.3-0.22-0.7889.2+51.2-19.3
74.93+23.97+32.3384.74-36.55+33.183.72+1.09-2.32
90-(1.04-0.49)97.6+(10.8+2)4.87-1.35-1.18
一、口算。
2.9+0.1=7.8-0.4=0.77+0.18=5.9+0.4=
4.9-0.4=6.9+2.4=0.63+0.04=5.5-0.9=
6.8-0.4=8.3+0.5=0.79+0.23=7.7-0.7=
2.1-0.4=6.3+3.1=0.66-0.24=5.6-0.8=
4.5+0.8=8.7+1=0.79-0.12=7.4+0.1=
3.9+0.4=6.3+0.9=0.61+0.45=1.7-0.1=
1.2-0.4=8.6-0.6=0.72+0.13=6.5+0.5=
3.1+0.2=8+4=0.67+0.1=5.4-0.7=
二、混合运算。
0.86+0.25+57.9-0.75-4.2568.6+37.4+21
67.39-18.15+80.6262.18-33.37+31.328.55+5.17-1.46
50-(1.08-0.54)71.6+(24.6+4.9)7.84-4.65+1.77
一、口算。
7.6-0.9=7.6+0.4=0.84+0.49=6.1+0.7=
3.6+0.7=8.5+2.5=0.75+0.09=4.6+0.4=
2.1+0.5=8.1-0.5=0.77-0.1=8.7+0.6=
8.9+0.1=8+4.3=0.71+0.05=3.9+0.5=
6.1-0.2=6.3+0.5=0.74-0.44=4.8-0.3=
8.3-0.9=8.4-3.3=0.79-0.48=6.9+0.1=
2.3-0.9=8.2-3.6=0.82-0.48=7.1+0.5=
8.4+0.2=7.3+0.1=0.66+0.12=5-0.3=
二、混合运算。
0.67-0.38+3.45.3-0.39-2.6171.3+40.3+26.8
68.03+26.14+88.7273.24+46.44+78.365.92+2.87+2.15
80-(8.44+0.13)70.6+(15.8+5.9)5.02-1.76-2.84
一、口算。
8.1+0.8=8.6-2.6=0.8+0.28=2.8-0.6=
2.2-0.3=7.2+4.1=0.63+0.18=6.2+0.8=
3.6-0.7=6.4-4.4=0.79-0.08=2.9+0.5=
8.2+0.7=7.9+1.5=0.72+0.38=3.6+0.5=
5.6+0.6=7.7-4=0.61-0.13=6.4-0.9=
4.2+0.9=6.8+1.4=0.81-0.24=8.6+0.7=
4.4-0.8=7+1.4=0.78-0.04=6.2-0.3=
4.2+0.9=6.4+0.5=0.66-0.17=1.9+0.4=
二、混合运算。
0.69+0.03+8.59.3-0.45-4.5538+11.1+18.4
84.61+10.07+39.7379.41+24.49+83.966.27+1.05+4.86
80-(2.75-0.78)98.6-(29.1+5.7)5.21-1.02+4.03
一、口算。
1.9-0.3=6.9+2.6=0.74+0.36=3.7+0.2=
5.1-0.6=7.1+0.9=0.61-0.43=8.5+0.6=
2.3+0.3=7.6-0.4=0.83+0.23=2.3+0.8=
3.6+0.9=7.9-2.2=0.79-0.23=6.1+0.7=
5.6-0.3=8.4-0.3=0.68+0.23=1.9+0.2=
8.8+0.3=9-3.9=0.66+0.03=8.6+0.6=
3.8+0.1=6.8-3.8=0.66-0.17=6.1+0.7=
5.9-0.9=7-1.6=0.87+0.48=2.6-0.8=
二、混合运算。
0.86-0.47+5.36.4-0.28-3.7290.6+38.4-17.8
76.63+19.21+99.9371.75+15.46+47.593.63+1.4-1.41
50-(5.24-0.23)86.1+(14-2)5.21+1.02-1.99
一、口算。
6.6-0.4=7.5+2=0.66+0.28=1.7+0.8=
4.4-0.3=6.7-3.4=0.6-0.49=6-0.9=
9-0.4=8.6-2.3=0.62-0.31=8.3-0.7=
4.4-0.9=7.9-3=0.75+0.32=7.7-0.5=
8-0.6=7.2+1.8=0.9+0.34=6.4+0.6=
6.8-0.5=6.4+4=0.81+0.08=2.5-0.7=
7.8-0.5=6.8+4.1=0.87+0.29=4.8+0.8=
8.6-0.4=6.2-0.8=0.76-0.3=1.1-0.1=
二、混合运算。
0.8+0.37+2.49.5-0.84-1.1646.8-16.7+17.9
67.73-18.68+14.5763.28-10.29+63.233.52-1.71-1.07
30-(1.81+0.19)64.7-(12.9+2)4.2-1.4+1.24
一、口算。
6.6+0.2=7.8-1.6=0.78+0.25=9+0.8=
4.8+0.1=7.2+3.5=0.67-0.45=3.5-0.8=
5.7+0.1=6.5-1.9=0.68-0.25=6+0.8=
1.5-0.4=8+3.1=0.73-0.09=5.9-0.6=
5.4+0.7=8.7+1.2=0.67-0.14=5.2+0.2=
2.2-0.4=7+2.5=0.61+0.16=3.3-0.5=
6.9-0.6=7.6+2.3=0.71+0.35=6+0.6=
5.3-0.8=8.3+3.6=0.79-0.49=8-0.8=
二、混合运算。
0.76-0.19+1.68.8-0.44-3.5690.7-68.4-20.6
81.58+37.98+97.7872.58-39.07+88.714.79-1.03+1.86
30-(5.32-0.23)81.1+(10.1+4.5)6.77+4.63+1.05
一、口算。
3.2+0.6=8.2+0.9=0.6-0.01=2.1+0.7=
2.3-0.6=6.9-3.4=0.63+0.48=7.6+0.4=
3.9-0.2=8.4+0.9=0.9-0.4=1.2+0.3=
3.2+0.6=7.3+3.9=0.89+0.45=3.6+0.1=
4.5+0.7=6.8+1.1=0.88+0.49=1.9-0.6=
5.8+0.4=7.6-1.2=0.6-0.2=5.4+0.2=
3.9+0.4=6.9-2.2=0.88-0.22=3.5+0.6=
3.3+0.1=6-3.7=0.87-0.45=1.5-0.9=
二、混合运算。
0.76+0.15+55.6-0.58-1.4294.6-43.9-18.9
64.7-40.64+69.2689.45+10.19+39.557.51-1.37+2.52
40-(5.69-0.82)95.9-(13.2-6.9)4.06+1.51-1.19
一、口算。
6.5+0.9=8.2-0.6=0.65-0.14=3.5+0.5=
6.3+0.6=7.9-0.9=0.77+0.35=6.5+0.3=
1.3+0.8=8.6+3.3=0.7-0.06=8.9+0.5=
1.8+0.3=7.9+1.4=0.75+0.25=2.2+0.2=
1.2-0.2=7+1.6=0.77+0.05=2.7-0.3=
2.6-0.5=8.8+0.3=0.81+0.2=1.1-0.1=
7.8-0.5=8.9-3.8=0.86+0.04=1.6-0.2=
7.6-0.6=8.9-0.5=0.73-0.49=8-0.9=
二、混合运算。
0.83-0.02+4.68.8-0.32-2.6837.5-21+12.7
63.03-46.43+76.8686.2+35.7+66.937.79+4.99+2.13
50-(4.62-0.49)73.8-(16.7-9.1)7.66+3.78+2.67
一、口算。
8.1-0.1=7.7+3.7=0.68-0.35=3.2+0.3=
1.2+0.1=6+1=0.65+0.38=1.6+0.1=
1.7+0.8=