人教版四年级数学下册小数加减法简便计算练习题18.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18
一、填一填。
6.6+8.66+3.4=6.6+____+8.66
(7.88+1.21)+8.79=____+(____+____)
19.73-7.9-2.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.55+5.9+4.19.37-1.6-3.4
6.68-3.6+3.324.1+0.94+0.06+21.9
9.7+2.4+3.58.38-3.71-1.29
59+9.3+6.5+434.36+3.36+5.64
0.84+3.58+5.160.04+9.7+6.96+0.3
1.9+0.83+7.17+8.19.96+7.47-6.96
一、填一填。
9.7+3.16+0.3=9.7+____+3.16
(3.45+2.96)+4.04=____+(____+____)
33.45-4.2-5.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.49+4.1+5.96.11-3.3-2.7
6.69-1.8+0.3115.7+0.53+0.47+8.3
7.3+3.2+7.19.39-0.06-4.94
63+1.1+3.8+554.03+5.92+0.08
3.92+5.08+6.080.59+4.3+6.41+5.7
2.4+4.34+2.66+5.68.44+2.26-7.44
一、填一填。
2.3+6.48+7.7=2.3+____+6.48
(9.57+2.93)+5.07=____+(____+____)
38.14-1.2-8.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.36+1.6+6.49.56-2.9-1.1
6.12-3.3+3.8810.2+0.48+0.52+10.8
6.8+1.3+7.48.43-1.65-3.35
72+3.8+3.7+795.17+1.16+8.84
0.39+7.22+7.614.03+8.3+3.97+1.7
4.1+3.43+6.57+5.99.91+3.25-5.91
一、填一填。
7.9+3.84+2.1=7.9+____+3.84
(1.11+3.53)+3.47=____+(____+____)
16.14-4.7-5.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.66+4.4+2.69.95-2.5-3.5
6.06-3.3+0.9416.7+0.14+0.86+8.3
2.3+5.8+4.48.92-0.73-5.27
55+2.1+5.2+445.29+4.72+4.28
0.24+3.09+5.763.16+4.3+6.84+5.7
0.6+3.03+5.97+8.48.25+4.89-7.25
一、填一填。
7.1+2.95+2.9=7.1+____+2.95
(4.39+3.55)+6.45=____+(____+____)
19.44-3.6-6.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.36+1.9+6.18.96-2.6-1.4
6.08-1.9+0.9217.2+0.66+0.34+3.8
1.4+6.9+4.27.48-3.78-2.22
52+7.2+7.3+372.28+1.27+6.73
4.81+7.33+1.194.73+8.1+1.27+1.9
1.3+1.91+6.09+8.77.78+4.87-2.78
一、填一填。
5.9+8.85+4.1=5.9+____+8.85
(4.38+2.96)+6.04=____+(____+____)
27.34-5.7-4.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.04+5.2+2.87.62-3.8-1.2
6.91-2.6+1.0915.8+0.96+0.04+13.2
1.7+1.1+8.27.67-3.38-1.62
22+9.9+9.7+420.58+0.85+7.15
4.27+5.29+5.733.76+2.8+6.24+7.2
4.9+1.41+3.59+3.17.13+2.77-4.13
一、填一填。
5.2+5.76+4.8=5.2+____+5.76
(9.54+3.42)+6.58=____+(____+____)
47.25-8.2-1.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.05+2.8+4.27.64-3.1-2.9
6.28-2.8+1.721.7+0.93+0.07+26.3
2.4+2.4+8.79.54-1.28-5.72
44+6.6+4.1+311.43+1.86+5.14
3.74+4.71+2.261.07+5.6+6.93+4.4
5.4+2.28+7.72+1.67.06+8.79-4.06
一、填一填。
6.1+5.49+3.9=6.1+____+5.49
(7.41+1.24)+6.76=____+(____+____)
15.68-1.1-8.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.94+4.4+2.67.82-3.8-0.2
4.33-1.8+2.6714.2+0.14+0.86+6.8
2.7+4.1+3.79.51-2.39-4.61
29+3.3+1.2+491.79+2.01+3.99
5.09+9.23+4.914.44+5.1+1.56+4.9
2.3+4.92+0.08+6.78.82+9.91-5.82
一、填一填。
3.9+2.75+6.1=3.9+____+2.75
(7.92+4.64)+4.36=____+(____+____)
30.56-3.3-6.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.69+1.8+4.28.93-3.6-0.4
5.12-2.3+3.8817.7+0.77+0.23+12.3
4.9+9.3+4.28.46-2.26-4.74
26+3.8+6.3+644.52+5.48+3.52
2.49+0.69+6.513.83+2.9+2.17+7.1
4.8+0.91+8.09+1.29.59+7.45-7.59
一、填一填。
7.4+7.66+2.6=7.4+____+7.66
(9.54+2.92)+7.08=____+(____+____)
10.66-2.1-7.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.55+2.2+5.89.55-1.1-4.9
6.43-2.1+0.5719.3+0.02+0.98+2.7
9.3+9.3+9.69.08-0.79-6.21
52+3.1+4.2+589.46+3.26+5.74
0.53+2.36+8.474.66+3.8+4.34+6.2
3.2+4.79+3.21+5.87.24+0.83-3.24
一、填一填。
9.1+3.55+0.9=9.1+____+3.55
(4.86+1.98)+5.02=____+(____+____)
44.99-1.2-8.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.41+3.3+6.78.27-2.7-2.3
5.68-3.8+1.321.6+0.33+0.67+18.4
7.2+2.7+9.69.46-0.94-5.06
81+8.6+1.7+424.46+5.85+0.15
2.04+8.84+6.963.14+7.7+5.86+2.3
0.7+4.93+1.07+8.37.98+2.05-6.98
一、填一填。
4.8+7.83+5.2=4.8+____+7.83
(8.34+4.61)+1.39=____+(____+____)
17.49-3.8-6.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.65+3.3+6.78.76-2.6-1.4
6.77-3.7+0.238.8+0.78+0.22+13.2
9.8+6.1+9.89.62-3.18-1.82
42+8.4+7.4+514.02+2.35+4.65
0.17+3.41+6.832.71+9.6+5.29+0.4
1.2+2.33+5.67+4.88.97+4.12-7.97
一、填一填。
8.2+4.26+1.8=8.2+____+4.26
(6.99+4.81)+3.19=____+(____+____)
33.88-5.7-4.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.57+5.4+0.69.98-3.1-1.9
5.54-3.5+2.463.8+0.58+0.42+16.2
1.6+8.8+8.49.04-0.89-6.11
87+1.3+6.3+145.17+4.32+1.68
3.28+8.23+2.724.76+1.4+4.24+8.6
5.3+4.08+1.92+1.76.45+3.46-4.45
一、填一填。
6.5+4.69+3.5=6.5+____+4.69
(7.29+3.35)+2.65=____+(____+____)
41.73-2.9-7.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.53+1.2+6.87.53-3.2-1.8
4.91-2.8+3.096.4+0.04+0.96+16.6
7.6+2.8+8.99.53-2.96-2.04
48+3.3+1.8+912.04+0.04+7.96
3.51+1.23+6.491.51+6.6+7.49+3.4
4.3+4.95+4.05+1.79.52+0.07-6.52
一、填一填。
6.9+6.53+3.1=6.9+____+6.53
(5.52+2.68)+3.32=____+(____+____)
22.78-2.8-7.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.26+1.3+6.78.48-2.8-1.2
4.63-2.2+3.374.8+0.71+0.29+19.2
7.7+9.8+6.49.53-1.96-5.04
76+6.9+9.5+823.52+3.36+2.64
0.44+3.17+6.562.72+0.3+3.28+9.7
2.9+1.34+8.66+7.17.66+4.24-4.66
一、填一填。
1.6+5.33+8.4=1.6+____+5.33
(4.74+1.94)+8.06=____+(____+____)
42.44-1.9-8.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.57+5.2+4.88.99-3.8-1.2
4.38-2.6+3.623.6+0.88+0.12+24.4
3.9+3.7+7.97.04-1.48-2.52
86+1.2+7.3+210.82+1.57+6.43
0.76+3.57+8.244.31+5.9+2.69+4.1
3.1+2.01+7.99+3.98.81+4.95-5.81
一、填一填。
4.5+3.96+5.5=4.5+____+3.96
(1.03+4.89)+3.11=____+(____+____)
41.27-6.3-3.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.48+4.6+4.46.36-3.3-2.7
5.17-1.6+1.8311.1+0.87+0.13+17.9
6.3+2.1+5.57.85-3.82-0.18
88+9.9+6.9+992.11+0.02+5.98
0.89+3.76+8.113.99+3.8+6.01+6.2
3.7+4.96+2.04+6.38.57+8.78-3.57
一、填一填。
8.9+8.14+1.1=8.9+____+8.14
(2.07+2.34)+6.66=____+(____+____)
14.58-3.1-6.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.36+4.9+1.17.02-2.9-3.1
5.88-1.7+4.123.8+0.78+0.22+23.2