四年级数学下册小数加减法简便计算专项练习题164.docx
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四年级数学下册小数加减法简便计算专项练习题164
一、填一填。
4.2+3.33+5.8=4.2+____+3.33
(5.17+3.95)+2.05=____+(____+____)
35.35-1.6-8.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.53+4.9+4.16.67-3.5-1.5
6.84-3.7+2.167.1+0.46+0.54+16.9
6.4+8.6+3.29.62-3.59-3.41
58+3.6+1.4+260.48+0.02+6.98
1.51+0.84+5.495.97+2.9+2.03+7.1
5.4+4.49+1.51+2.66.25+6.35-1.25
一、填一填。
8.6+2.74+1.4=8.6+____+2.74
(8.49+4.03)+1.97=____+(____+____)
10.61-8.7-1.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.83+4.8+2.27.61-3.5-2.5
4.44-2.8+3.569.3+0.57+0.43+14.7
6.3+7.1+3.48.52-0.66-3.34
94+8.2+3.5+390.91+5.86+1.14
4.45+2.76+1.552.47+9.8+7.53+0.2
1.6+0.12+6.88+4.46.41+5.04-2.41
一、填一填。
3.5+5.64+6.5=3.5+____+5.64
(6.03+4.93)+5.07=____+(____+____)
48.37-1.6-8.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.75+4.7+2.39.36-3.3-0.7
4.19-3.1+4.8117.2+0.87+0.13+9.8
5.3+2.6+2.77.44-0.72-5.28
73+4.5+1.8+830.99+4.92+4.08
5.52+0.69+1.483.08+0.4+5.92+9.6
3.3+3.81+5.19+5.78.87+2.53-3.87
一、填一填。
2.6+4.59+7.4=2.6+____+4.59
(8.17+1.45)+8.55=____+(____+____)
30.63-4.5-5.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.61+5.4+3.68.52-3.8-1.2
6.46-2.7+1.5411.2+0.02+0.98+14.8
5.5+8.2+7.87.51-2.71-3.29
42+5.1+9.7+821.14+1.33+4.67
3.92+0.72+4.080.53+9.8+5.47+0.2
3.3+4.09+4.91+5.78.24+8.42-5.24
一、填一填。
2.1+4.32+7.9=2.1+____+4.32
(4.25+1.57)+5.43=____+(____+____)
18.94-3.2-6.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.09+5.3+2.79.94-3.4-1.6
4.51-3.1+5.4919.4+0.67+0.33+5.6
6.1+9.3+2.87.14-2.43-1.57
69+6.1+3.2+664.59+1.14+8.86
0.15+4.15+7.850.57+4.6+7.43+5.4
2.3+4.86+2.14+5.79.77+2.58-6.77
一、填一填。
3.5+6.91+6.5=3.5+____+6.91
(4.62+3.49)+6.51=____+(____+____)
45.05-2.3-7.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.78+4.1+4.98.36-1.8-2.2
4.73-1.7+5.272.8+0.88+0.12+25.2
6.5+1.6+5.78.46-2.59-2.41
34+5.4+4.9+373.12+2.54+6.46
0.24+0.95+6.760.85+7.7+8.15+2.3
2.5+2.16+3.84+7.58.55+6.53-3.55
一、填一填。
9.7+5.23+0.3=9.7+____+5.23
(9.58+4.94)+4.06=____+(____+____)
48.06-6.3-3.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.39+5.6+0.49.58-1.2-4.8
5.14-1.2+1.8613.4+0.64+0.36+16.6
2.1+8.9+7.48.17-3.48-2.52
96+8.9+3.6+640.96+1.95+7.05
1.88+2.87+8.123.79+8.4+6.21+1.6
3.1+0.17+5.83+2.96.87+9.01-3.87
一、填一填。
5.6+6.44+4.4=5.6+____+6.44
(8.16+3.29)+2.71=____+(____+____)
46.64-5.9-4.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.41+4.9+2.19.11-3.5-2.5
4.73-3.7+3.275.2+0.21+0.79+21.8
3.4+2.4+8.18.67-0.05-5.95
43+8.6+9.6+247.01+0.78+9.22
1.22+2.28+6.785.46+6.4+3.54+3.6
1.9+2.68+4.32+7.16.62+4.71-1.62
一、填一填。
7.2+6.18+2.8=7.2+____+6.18
(5.97+3.18)+6.82=____+(____+____)
22.38-8.7-1.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.04+4.8+1.26.37-2.7-1.3
4.86-2.7+4.1412.6+0.48+0.52+8.4
2.6+9.6+3.99.01-3.77-0.23
85+2.4+5.1+967.56+5.58+3.42
3.95+4.96+3.053.58+0.3+2.42+9.7
3.2+1.69+3.31+6.87.93+8.41-2.93
一、填一填。
5.1+8.33+4.9=5.1+____+8.33
(2.46+1.62)+4.38=____+(____+____)
15.15-4.6-5.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.73+2.2+5.88.13-1.7-2.3
5.36-3.3+4.641.6+0.56+0.44+24.4
8.1+8.5+5.28.17-2.76-4.24
56+1.7+2.2+344.77+3.18+2.82
3.96+1.43+4.040.57+8.1+8.43+1.9
5.3+1.66+3.34+0.78.27+8.16-4.27