人教版四年级数学下册小数加减法简便计算专项练习题24.docx
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人教版四年级数学下册小数加减法简便计算专项练习题24
一、填一填。
7.4+1.71+2.6=7.4+____+1.71
(1.05+4.67)+5.33=____+(____+____)
14.83-1.5-8.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.62+4.2+3.88.19-3.2-0.8
5.18-1.7+2.826.5+0.69+0.31+14.5
9.6+8.1+7.78.05-2.91-2.09
41+7.8+9.4+434.91+2.03+7.97
3.57+9.33+5.430.93+3.6+5.07+6.4
3.7+0.39+8.61+5.37.31+5.86-4.31
一、填一填。
1.4+6.44+8.6=1.4+____+6.44
(7.29+3.69)+2.31=____+(____+____)
31.41-5.1-4.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.26+4.1+3.96.74-2.3-2.7
6.59-1.3+2.417.1+0.97+0.03+22.9
2.4+1.6+1.48.15-0.01-3.99
38+7.7+3.1+426.18+1.02+7.98
4.86+3.92+3.140.63+8.1+7.37+1.9
2.5+4.34+0.66+4.57.98+4.53-5.98
一、填一填。
7.1+3.29+2.9=7.1+____+3.29
(2.88+1.31)+4.69=____+(____+____)
20.03-4.3-5.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.86+4.4+5.66.98-2.9-1.1
6.88-3.6+1.123.4+0.58+0.42+21.6
4.3+3.1+4.58.93-3.35-3.65
39+7.4+4.9+228.02+1.86+7.14
4.36+0.25+1.644.16+6.4+3.84+3.6
4.3+3.51+2.49+5.76.78+3.28-5.78
一、填一填。
8.5+7.52+1.5=8.5+____+7.52
(9.23+1.04)+5.96=____+(____+____)
26.86-2.8-7.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.71+2.3+7.79.48-1.6-2.4
5.81-1.3+1.1911.3+0.26+0.74+10.7
4.9+1.7+4.39.48-3.67-0.33
82+8.8+3.7+295.45+2.86+5.14
5.83+8.32+3.174.62+6.3+5.38+3.7
1.1+4.36+3.64+7.99.72+8.85-6.72
一、填一填。
7.8+4.79+2.2=7.8+____+4.79
(6.33+2.32)+4.68=____+(____+____)
17.97-6.2-3.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.99+2.3+3.79.48-2.5-3.5
5.99-2.6+2.019.7+0.27+0.73+10.3
8.3+7.8+8.28.04-3.46-2.54
83+6.2+7.1+675.54+3.89+6.11
2.22+1.05+6.783.07+0.2+3.93+9.8
1.8+2.72+7.28+4.26.28+1.42-1.28
一、填一填。
6.5+2.05+3.5=6.5+____+2.05
(2.95+2.54)+6.46=____+(____+____)
31.21-5.1-4.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.63+3.7+6.38.87-3.3-2.7
4.17-1.4+2.8310.1+0.13+0.87+13.9
1.8+7.1+2.69.85-0.94-4.06
56+2.8+3.8+687.28+2.32+6.68
3.56+9.34+6.443.33+6.3+2.67+3.7
5.2+2.21+6.79+0.88.53+0.07-3.53
一、填一填。
4.3+8.51+5.7=4.3+____+8.51
(6.49+4.63)+4.37=____+(____+____)
10.13-2.8-7.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.38+5.1+2.97.65-2.9-3.1
4.98-2.2+2.0215.8+0.16+0.84+9.2
7.5+7.9+7.38.17-0.24-6.76
82+2.9+2.6+544.55+2.34+7.66
2.56+1.11+5.440.86+4.1+7.14+5.9
1.8+2.88+3.12+7.28.31+0.36-7.31
一、填一填。
3.6+9.93+6.4=3.6+____+9.93
(3.89+4.55)+5.45=____+(____+____)
44.37-8.2-1.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.04+3.6+4.47.52-2.5-3.5
5.58-1.6+2.4211.2+0.39+0.61+18.8
3.5+2.3+4.89.51-0.15-6.85
33+5.4+6.2+184.97+3.64+6.36
2.58+0.68+5.420.48+4.3+7.52+5.7
1.8+0.35+4.65+4.27.63+9.14-6.63
一、填一填。
3.8+8.43+6.2=3.8+____+8.43
(6.19+4.54)+5.46=____+(____+____)
38.76-2.6-7.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.17+4.1+4.97.58-2.1-1.9
5.66-2.8+3.3418.8+0.93+0.07+6.2
2.1+6.8+7.79.06-0.76-6.24
52+1.2+1.3+173.12+3.44+2.56
1.03+1.41+8.971.98+8.3+4.02+1.7
0.2+1.75+7.25+5.87.05+2.28-5.05
一、填一填。
5.8+8.08+4.2=5.8+____+8.08
(5.47+2.26)+7.74=____+(____+____)
33.74-2.9-7.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.99+2.4+7.66.97-1.8-2.2
5.11-1.3+3.8918.3+0.82+0.18+11.7
7.7+6.6+5.57.76-2.17-4.83
67+1.5+5.5+380.66+2.21+6.79
4.46+2.17+2.544.77+4.9+1.23+5.1
3.3+0.52+9.48+3.78.19+9.88-7.19
一、填一填。
8.5+2.04+1.5=8.5+____+2.04
(3.22+1.49)+5.51=____+(____+____)
30.81-8.8-1.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.88+3.5+4.58.19-3.1-0.9
5.22-2.5+1.789.6+0.97+0.03+16.4
3.4+5.7+5.59.88-1.78-5.22
58+5.7+8.1+266.81+3.44+3.56
4.88+1.64+4.123.86+1.5+2.14+8.5
5.5+2.56+7.44+4.57.45+5.49-5.45
一、填一填。
8.2+9.63+1.8=8.2+____+9.63
(2.44+3.33)+6.67=____+(____+____)
49.18-4.4-5.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.56+4.7+3.36.12-3.4-1.6
5.51-2.2+1.495.8+0.03+0.97+16.2
7.9+6.5+4.67.93-1.84-4.16
59+5.6+2.1+861.62+3.34+6.66
4.27+9.66+1.735.64+4.8+2.36+5.2
2.6+3.97+4.03+5.46.74+0.87-4.74
一、填一填。
9.3+3.35+0.7=9.3+____+3.35
(2.45+2.69)+3.31=____+(____+____)
21.32-4.7-5.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.72+3.3+2.79.78-1.8-2.2
6.45-3.7+0.5518.9+0.26+0.74+5.1
7.2+9.5+7.37.73-0.97-3.03
32+2.4+5.4+857.07+3.45+2.55
3.35+5.43+6.652.36+8.2+7.64+1.8
0.4+4.97+3.03+5.66.85+6.49-1.85
一、填一填。
6.8+3.77+3.2=6.8+____+3.77
(7.07+4.26)+3.74=____+(____+____)
22.84-3.2-6.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.87+2.1+7.99.35-2.4-3.6
4.01-1.7+5.994.9+0.36+0.64+24.1
1.5+8.1+9.47.42-0.52-5.48
17+8.8+8.2+727.06+3.98+3.02
4.78+2.79+5.221.67+6.9+8.33+3.1
5.5+3.23+1.77+3.56.81+0.86-4.81
一、填一填。
9.7+8.68+0.3=9.7+____+8.68
(1.67+2.01)+3.99=____+(____+____)
22.95-2.3-7.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.36+2.9+4.19.32-3.5-1.5
4.08-2.7+2.929.4+0.99+0.01+18.6
8.5+1.2+6.27.96-0.43-6.57
57+4.5+5.4+528.23+3.02+4.98
2.78+3.33+4.225.21+4.6+3.79+5.4
1.3+2.38+5.62+8.78.08+0.04-7.08
一、填一填。
5.4+1.97+4.6=5.4+____+1.97
(7.07+2.01)+5.99=____+(____+____)
29.35-3.3-6.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.29+2.3+5.79.35-2.2-2.8
5.97-1.6+2.0313.1+0.54+0.46+10.9
9.7+4.6+7.49.99-2.86-1.14
13+2.9+4.2+780.55+0.82+9.18
5.22+6.83+4.785.52+3.1+4.48+6.9
2.6+0.25+7.75+3.47.88+1.59-4.88
一、填一填。
5.7+1.02+4.3=5.7+____+1.02
(8.96+2.87)+7.13=____+(____+____)
10.79-8.4-1.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.35+1.3+8.79.81-3.6-1.4
4.68-2.7+5.320.9+0.03+0.97+25.1
1.2+2.6+6.98.84-0.72-4.28
71+7.5+2.6+299.28+5.94+3.06
0.43+7.77+6.573.51+2.8+3.49+7.2
3.9+4.25+4.75+3.17.81+8.22-3.81
一、填一填。
5.9+7.43+4.1=5.9+____+7.43
(7.37+4.77)+4.23=____+(____+____)
39.14-1.2-8.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.23+4.5+4.58.33-3.7-2.3
5.16-2.4+1.8410.3+0.75+0.25+16.7