人教版四年级数学下册小数加减法简便计算练习题25.docx
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人教版四年级数学下册小数加减法简便计算练习题25
一、填一填。
4.6+2.17+5.4=4.6+____+2.17
(4.36+2.12)+3.88=____+(____+____)
30.91-5.1-4.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.14+3.7+5.38.57-2.9-1.1
6.96-2.2+0.041.7+0.88+0.12+19.3
7.5+3.5+8.77.19-2.69-4.31
88+9.8+6.1+864.82+5.17+4.83
5.93+7.69+1.071.73+0.1+7.27+9.9
5.6+1.69+6.31+1.48.13+0.86-5.13
一、填一填。
3.9+4.09+6.1=3.9+____+4.09
(4.39+3.74)+2.26=____+(____+____)
25.56-2.9-7.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.82+5.9+2.17.33-2.2-1.8
5.06-3.5+3.943.1+0.34+0.66+24.9
3.7+5.9+9.68.36-2.05-1.95
34+2.3+8.3+448.27+4.29+3.71
3.43+8.76+4.571.39+7.3+7.61+2.7
3.8+3.39+4.61+4.29.57+3.48-6.57
一、填一填。
6.3+8.39+3.7=6.3+____+8.39
(9.44+3.23)+3.77=____+(____+____)
43.26-8.3-1.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.36+1.5+6.58.37-2.7-2.3
5.22-3.1+4.788.4+0.54+0.46+14.6
7.3+7.5+2.59.83-0.21-6.79
47+3.8+6.3+194.25+2.26+6.74
5.76+0.53+3.243.48+3.8+2.52+6.2
5.5+2.44+3.56+0.57.88+7.89-5.88
一、填一填。
6.1+7.28+3.9=6.1+____+7.28
(8.81+1.39)+4.61=____+(____+____)
28.63-2.2-7.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.88+2.8+4.29.86-3.6-0.4
6.25-1.5+2.7518.5+0.93+0.07+6.5
1.7+4.8+4.87.61-2.29-3.71
27+4.1+1.5+999.39+5.86+0.14
5.83+6.25+2.173.72+3.7+2.28+6.3
0.6+1.52+8.48+6.46.24+5.66-5.24
一、填一填。
6.1+1.19+3.9=6.1+____+1.19
(5.24+4.43)+3.57=____+(____+____)
22.15-1.2-8.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.89+2.6+3.49.27-2.1-2.9
4.51-1.9+2.4911.9+0.56+0.44+16.1
5.7+3.5+8.29.67-1.63-5.37
99+8.1+5.6+835.74+0.03+5.97
4.58+2.72+2.421.46+9.2+6.54+0.8
4.4+3.46+5.54+2.68.69+8.41-4.69
一、填一填。
3.8+9.08+6.2=3.8+____+9.08
(5.62+3.12)+3.88=____+(____+____)
40.55-1.1-8.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.23+5.7+2.37.89-3.8-0.2
4.84-1.7+4.165.4+0.68+0.32+20.6
1.7+9.5+6.69.42-1.24-2.76
27+2.1+8.3+139.14+2.42+3.58
2.73+7.87+7.275.32+1.3+2.68+8.7
4.9+3.01+5.99+1.18.65+8.98-7.65
一、填一填。
2.4+1.51+7.6=2.4+____+1.51
(7.51+3.49)+4.51=____+(____+____)
25.96-2.4-7.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.24+5.2+2.87.04-1.7-2.3
4.35-3.8+5.654.9+0.78+0.22+23.1
3.6+8.1+4.28.85-0.68-5.32
64+7.4+1.1+617.33+4.45+3.55
3.24+4.75+6.762.59+4.8+7.41+5.2
2.7+3.34+3.66+4.39.95+9.89-6.95
一、填一填。
5.2+8.05+4.8=5.2+____+8.05
(1.46+3.28)+4.72=____+(____+____)
14.46-6.4-3.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.06+2.5+3.57.74-2.2-3.8
4.44-3.1+2.569.8+0.83+0.17+20.2
4.9+2.1+5.39.01-2.29-4.71
81+5.9+3.8+925.65+4.89+1.11
0.06+4.49+7.942.67+9.1+4.33+0.9
4.6+1.44+6.56+3.49.87+7.93-7.87
一、填一填。
4.8+2.03+5.2=4.8+____+2.03
(4.12+2.19)+7.81=____+(____+____)
40.43-1.9-8.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.13+1.3+8.79.76-1.3-3.7
5.38-3.3+2.6218.4+0.82+0.18+9.6
4.1+5.4+9.97.24-0.05-6.95
47+5.5+4.7+560.43+0.93+9.07
1.21+1.24+4.793.95+3.5+6.05+6.5
2.9+2.87+4.13+6.16.85+3.62-2.85
一、填一填。
8.1+2.17+1.9=8.1+____+2.17
(5.97+1.53)+7.47=____+(____+____)
31.67-1.9-8.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.96+5.7+1.37.12-1.5-2.5
5.71-2.9+1.293.9+0.61+0.39+20.1
3.8+7.6+5.99.94-2.03-2.97
47+3.8+6.8+975.84+0.39+6.61
3.96+4.61+6.042.31+4.6+6.69+5.4
3.1+2.82+3.18+4.96.66+6.83-4.66
一、填一填。
1.7+1.52+8.3=1.7+____+1.52
(9.98+4.78)+4.22=____+(____+____)
30.45-1.4-8.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.68+1.9+4.16.57-2.2-3.8
5.91-3.6+1.091.2+0.26+0.74+23.8
7.8+4.5+6.18.43-3.35-0.65
41+2.8+2.6+888.92+4.65+5.35
5.28+7.29+4.725.57+7.3+0.43+2.7
2.8+1.09+4.91+5.26.04+0.57-4.04
一、填一填。
2.7+8.06+7.3=2.7+____+8.06
(2.51+1.97)+7.03=____+(____+____)
32.65-1.2-8.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.41+1.7+6.38.66-1.9-3.1
4.53-3.8+3.4710.2+0.48+0.52+19.8
3.6+9.1+5.27.82-3.48-1.52
99+7.2+6.9+166.63+1.48+7.52
0.46+8.78+8.544.51+2.4+3.49+7.6
5.9+2.24+4.76+4.18.29+9.97-4.29
一、填一填。
9.3+5.24+0.7=9.3+____+5.24
(9.59+4.51)+3.49=____+(____+____)
15.95-5.8-4.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.24+1.7+7.38.12-3.1-1.9
5.06-2.9+3.948.8+0.68+0.32+20.2
1.8+2.1+6.27.43-1.31-5.69
51+2.3+4.5+162.56+3.48+6.52
3.27+2.03+4.734.81+9.9+4.19+0.1
3.7+4.93+4.07+4.36.49+0.19-3.49
一、填一填。
8.4+4.08+1.6=8.4+____+4.08
(1.98+3.02)+6.98=____+(____+____)
49.89-3.6-6.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.61+5.2+4.89.17-2.3-3.7
4.23-3.9+2.7714.7+0.56+0.44+12.3
5.7+8.5+8.39.91-2.42-1.58
42+6.1+8.7+463.88+3.51+6.49
1.26+8.18+7.745.51+5.5+4.49+4.5
4.9+3.38+1.62+5.19.79+1.05-7.79
一、填一填。
1.4+9.99+8.6=1.4+____+9.99
(4.99+1.39)+5.61=____+(____+____)
35.21-2.5-7.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.75+3.5+4.57.94-3.1-2.9
5.37-2.7+4.633.9+0.91+0.09+18.1
2.6+7.2+9.88.34-2.54-4.46
35+5.3+4.5+234.23+2.75+4.25
5.13+8.89+2.872.89+5.1+3.11+4.9
4.7+2.45+5.55+4.37.43+5.72-2.43
一、填一填。
3.6+2.44+6.4=3.6+____+2.44
(1.01+4.26)+1.74=____+(____+____)
29.81-7.2-2.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.18+2.3+5.77.04-3.7-1.3
4.44-1.1+2.5615.4+0.07+0.93+12.6
8.7+8.4+2.27.48-1.85-5.15
75+1.6+8.5+615.22+2.94+5.06
2.18+8.21+6.823.16+5.9+2.84+4.1
3.5+2.62+3.38+2.56.48+7.98-3.48
一、填一填。
4.6+2.14+5.4=4.6+____+2.14
(7.43+2.92)+4.08=____+(____+____)
33.83-3.3-6.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.46+2.2+3.88.72-1.1-4.9
5.81-3.1+3.197.8+0.46+0.54+14.2
3.3+5.8+8.37.21-3.69-0.31
51+1.5+2.4+884.24+0.24+7.76
4.11+2.59+3.893.24+4.7+5.76+5.3
2.1+2.49+7.51+5.99.15+6.26-6.15
一、填一填。
4.9+4.73+5.1=4.9+____+4.73
(2.38+1.53)+4.47=____+(____+____)
43.36-3.5-6.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.13+2.3+4.78.52-1.6-3.4
5.18-3.7+4.8218.5+0.53+0.47+3.5