人教版四年级数学下册小数加减法简便计算专项练习题14.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14
一、填一填。
6.2+9.39+3.8=6.2+____+9.39
(3.13+2.91)+7.09=____+(____+____)
13.09-2.8-7.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.43+1.7+6.37.36-3.6-0.4
5.95-1.1+2.0518.9+0.55+0.45+5.1
5.8+5.1+3.68.43-1.08-2.92
76+4.2+9.1+628.67+3.26+3.74
2.81+9.46+4.195.09+3.3+2.91+6.7
3.1+2.73+6.27+6.99.12+8.33-6.12
一、填一填。
2.6+4.27+7.4=2.6+____+4.27
(2.98+3.56)+3.44=____+(____+____)
43.37-6.9-3.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.51+2.4+7.69.92-1.6-3.4
6.68-1.2+0.327.1+0.97+0.03+21.9
6.9+7.5+2.67.52-2.02-1.98
99+2.8+1.3+842.61+1.74+6.26
3.45+5.02+2.555.96+0.7+0.04+9.3
1.4+0.82+4.18+8.66.25+7.12-4.25
一、填一填。
1.2+2.21+8.8=1.2+____+2.21
(5.13+3.41)+6.59=____+(____+____)
49.83-3.8-6.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.58+3.4+3.67.47-2.4-1.6
5.31-3.2+2.6917.5+0.63+0.37+7.5
9.9+2.9+3.29.48-1.03-3.97
83+9.4+9.1+223.92+2.92+6.08
5.84+0.89+0.163.21+0.6+5.79+9.4
5.1+4.19+4.81+4.96.89+4.06-3.89
一、填一填。
2.8+2.26+7.2=2.8+____+2.26
(9.53+2.33)+6.67=____+(____+____)
26.49-3.4-6.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.14+2.3+7.76.17-1.8-4.2
6.48-1.6+1.526.6+0.37+0.63+23.4
9.2+2.1+7.39.33-1.23-4.77
31+3.7+3.9+212.21+3.03+2.97
4.63+7.06+2.374.24+5.1+1.76+4.9
5.4+1.66+3.34+0.66.79+9.03-4.79
一、填一填。
4.8+3.16+5.2=4.8+____+3.16
(6.57+3.23)+2.77=____+(____+____)
21.08-6.7-3.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.51+3.4+6.66.15-1.2-4.8
5.22-2.5+2.7815.8+0.79+0.21+13.2
2.3+2.7+6.77.12-3.29-1.71
11+7.9+6.6+476.56+2.52+7.48
3.92+6.77+2.085.02+6.7+4.98+3.3
1.5+4.88+3.12+6.59.35+9.86-4.35
一、填一填。
2.4+2.54+7.6=2.4+____+2.54
(8.21+3.61)+5.39=____+(____+____)
17.49-2.8-7.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.58+1.2+5.86.98-2.7-1.3
5.64-1.7+1.360.7+0.18+0.82+27.3
5.9+7.1+7.27.35-0.38-6.62
64+7.6+7.1+751.06+3.66+2.34
4.26+5.44+5.744.79+9.9+2.21+0.1
3.9+0.02+6.98+4.19.68+1.68-8.68
一、填一填。
8.9+5.21+1.1=8.9+____+5.21
(6.62+4.77)+3.23=____+(____+____)
42.88-6.7-3.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.12+1.5+7.59.03-2.2-3.8
4.34-1.5+2.661.8+0.28+0.72+21.2
3.4+3.4+3.28.55-3.05-1.95
81+9.8+8.4+163.71+3.81+5.19
3.74+0.64+4.262.24+9.9+5.76+0.1
2.7+1.96+5.04+7.36.28+3.19-1.28
一、填一填。
3.8+3.97+6.2=3.8+____+3.97
(1.25+2.57)+3.43=____+(____+____)
43.41-5.6-4.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.36+4.6+4.47.47-2.2-1.8
6.86-2.2+0.1411.6+0.39+0.61+9.4
9.6+2.5+8.58.18-0.77-6.23
57+6.3+2.8+282.96+2.56+6.44
5.97+9.59+2.035.79+7.3+2.21+2.7
5.9+0.51+7.49+1.19.72+8.41-4.72
一、填一填。
4.6+3.11+5.4=4.6+____+3.11
(7.26+2.62)+3.38=____+(____+____)
27.97-2.1-7.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.46+3.3+4.77.97-2.5-3.5
5.14-3.8+3.8614.9+0.54+0.46+8.1
9.4+5.7+9.79.27-0.91-5.09
48+4.6+2.3+450.85+3.46+3.54
4.19+6.57+5.812.23+7.8+4.77+2.2
3.7+0.53+5.47+4.37.61+3.98-3.61
一、填一填。
5.9+1.87+4.1=5.9+____+1.87
(1.85+4.46)+2.54=____+(____+____)
13.39-2.4-7.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.43+2.6+3.46.44-2.5-3.5
6.18-1.6+2.823.9+0.58+0.42+23.1
5.3+3.9+8.78.77-3.69-1.31
43+6.4+3.1+942.83+1.23+7.77
5.46+0.28+2.545.79+1.9+3.21+8.1
4.3+3.26+4.74+5.78.47+1.38-6.47
一、填一填。
2.7+3.14+7.3=2.7+____+3.14
(1.06+4.23)+2.77=____+(____+____)
33.03-2.8-7.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.52+5.4+1.67.28-1.7-4.3
6.68-1.8+1.3217.9+0.53+0.47+5.1
2.7+9.5+5.88.67-3.78-0.22
51+8.1+5.5+239.34+3.74+6.26
2.63+3.88+4.371.31+3.2+8.69+6.8
4.9+4.57+4.43+3.17.34+1.58-2.34
一、填一填。
4.1+4.37+5.9=4.1+____+4.37
(9.72+2.68)+7.32=____+(____+____)
18.85-4.8-5.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.87+4.9+5.16.98-2.1-1.9
4.64-1.8+3.367.9+0.35+0.65+19.1
2.9+2.3+2.77.13-0.54-5.46
57+5.7+4.7+824.23+1.78+5.22
0.44+0.43+9.562.13+2.8+3.87+7.2
4.4+0.88+6.12+5.67.39+5.35-6.39
一、填一填。
7.4+4.91+2.6=7.4+____+4.91
(8.48+1.13)+4.87=____+(____+____)
22.36-8.4-1.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.74+5.7+3.39.07-3.6-2.4
6.35-1.9+0.6510.3+0.29+0.71+13.7
8.1+6.5+8.89.21-0.02-4.98
84+9.8+6.2+899.59+2.54+6.46
0.69+2.13+7.312.75+7.4+7.25+2.6
4.6+2.64+5.36+2.48.18+3.58-5.18
一、填一填。
4.5+4.29+5.5=4.5+____+4.29
(6.06+2.08)+7.92=____+(____+____)
21.48-3.5-6.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.34+3.7+6.36.02-1.9-2.1
4.73-3.6+3.2716.6+0.94+0.06+3.4
8.1+3.3+2.98.19-0.14-5.86
89+2.4+5.2+476.98+4.29+1.71
2.88+3.79+7.124.34+8.1+2.66+1.9
5.3+3.79+4.21+1.79.92+6.98-5.92
一、填一填。
2.1+3.82+7.9=2.1+____+3.82
(4.09+4.19)+1.81=____+(____+____)
20.33-8.1-1.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.93+1.3+8.77.59-1.1-4.9
4.92-2.9+5.086.8+0.53+0.47+14.2
3.9+9.6+8.47.45-1.34-5.66
55+7.9+4.9+221.56+5.63+0.37
5.12+4.95+3.880.28+3.5+9.72+6.5
3.9+4.27+2.73+6.18.39+1.53-7.39
一、填一填。
8.8+3.17+1.2=8.8+____+3.17
(1.66+1.55)+4.45=____+(____+____)
34.62-5.7-4.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.31+4.2+2.86.49-3.3-0.7
6.73-3.5+2.2718.9+0.46+0.54+9.1
4.8+1.4+5.47.88-0.43-4.57
62+4.4+9.9+363.87+4.47+2.53
3.94+8.11+5.064.06+9.7+1.94+0.3
5.8+2.43+2.57+2.27.43+7.26-2.43
一、填一填。
3.9+7.95+6.1=3.9+____+7.95
(5.49+1.34)+6.66=____+(____+____)
46.95-4.5-5.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.94+5.8+3.28.34-2.9-1.1
6.71-2.2+2.294.7+0.49+0.51+16.3
3.3+3.8+6.59.75-0.25-6.75
43+2.5+4.6+125.11+2.26+4.74
4.78+7.34+3.224.51+4.8+4.49+5.2
5.8+4.85+0.15+2.26.91+4.72-3.91
一、填一填。
9.9+6.74+0.1=9.9+____+6.74
(4.53+4.39)+5.61=____+(____+____)
21.57-2.5-7.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.15+5.8+1.29.03-2.8-2.2
4.21-2.8+2.7913.4+0.53+0.47+16.6