人教版四年级数学下册小数加减法简便计算练习题38.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38
一、填一填。
4.8+2.57+5.2=4.8+____+2.57
(7.57+2.57)+7.43=____+(____+____)
49.72-7.9-2.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.56+5.5+1.58.98-1.2-4.8
6.58-1.5+1.4217.9+0.11+0.89+3.1
7.2+8.1+6.67.59-1.67-5.33
35+8.4+5.1+193.66+0.51+8.49
2.78+7.95+4.224.44+5.4+2.56+4.6
2.4+1.06+6.94+6.67.37+6.86-2.37
一、填一填。
2.6+7.41+7.4=2.6+____+7.41
(2.67+3.81)+5.19=____+(____+____)
41.93-8.6-1.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.14+5.9+1.17.04-1.1-4.9
6.71-3.3+1.295.3+0.78+0.22+24.7
5.5+5.1+7.17.69-1.97-2.03
18+3.3+4.2+757.43+0.16+9.84
2.75+7.18+6.250.76+7.9+6.24+2.1
2.8+4.98+4.02+6.27.17+0.16-5.17
一、填一填。
2.8+1.31+7.2=2.8+____+1.31
(1.24+3.91)+4.09=____+(____+____)
42.99-7.8-2.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.46+3.4+3.66.45-3.2-1.8
6.95-1.7+2.053.7+0.13+0.87+18.3
9.8+8.6+9.39.77-0.25-3.75
92+5.1+5.1+328.47+3.23+6.77
5.85+9.04+2.152.79+9.7+7.21+0.3
3.5+1.25+3.75+2.59.38+1.82-8.38
一、填一填。
6.6+7.88+3.4=6.6+____+7.88
(7.23+1.86)+5.14=____+(____+____)
45.36-6.1-3.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.45+4.9+3.18.99-3.7-0.3
4.83-2.9+3.175.4+0.98+0.02+23.6
3.6+3.7+5.99.89-0.04-3.96
37+7.8+2.8+187.08+3.02+3.98
4.12+2.12+2.880.16+2.6+5.84+7.4
5.5+4.14+0.86+0.56.15+7.83-3.15
一、填一填。
6.8+8.15+3.2=6.8+____+8.15
(6.14+4.41)+5.59=____+(____+____)
10.89-1.7-8.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.12+5.1+3.96.99-2.5-3.5
5.45-1.4+3.5514.1+0.33+0.67+12.9
3.1+3.9+6.69.16-1.79-2.21
73+8.3+9.9+373.62+1.07+4.93
0.26+9.32+6.744.19+3.2+1.81+6.8
3.3+1.25+3.75+6.78.21+4.09-5.21
一、填一填。
8.8+5.04+1.2=8.8+____+5.04
(7.76+1.68)+8.32=____+(____+____)
34.07-4.1-5.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.78+3.1+5.98.67-3.2-0.8
4.01-1.6+5.991.5+0.43+0.57+28.5
2.1+4.9+8.37.21-2.49-2.51
26+9.6+9.7+445.86+2.63+4.37
1.39+9.37+6.613.44+1.6+3.56+8.4
1.3+1.64+5.36+5.78.58+3.04-4.58
一、填一填。
7.9+8.01+2.1=7.9+____+8.01
(6.64+3.71)+2.29=____+(____+____)
10.84-2.2-7.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.31+2.3+3.79.53-2.5-2.5
4.53-3.8+5.4717.1+0.09+0.91+3.9
1.8+7.4+3.69.46-0.93-6.07
57+5.8+5.6+826.38+3.44+3.56
5.93+5.94+3.075.41+3.5+1.59+6.5
5.8+1.26+8.74+4.29.03+9.42-6.03
一、填一填。
5.6+9.63+4.4=5.6+____+9.63
(4.03+2.25)+7.75=____+(____+____)
12.63-6.1-3.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.33+1.4+7.66.68-1.1-4.9
4.77-2.7+4.237.4+0.05+0.95+22.6
8.1+3.9+9.58.96-1.38-2.62
31+4.6+2.8+538.05+0.43+7.57
1.44+5.28+8.561.36+7.1+7.64+2.9
3.2+2.02+5.98+5.87.62+3.98-6.62
一、填一填。
3.1+1.57+6.9=3.1+____+1.57
(5.92+2.36)+6.64=____+(____+____)
32.11-6.9-3.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.66+5.8+3.28.18-3.2-2.8
4.66-2.2+2.348.2+0.87+0.13+16.8
3.3+2.3+5.48.26-2.84-3.16
95+5.4+5.1+532.15+3.85+2.15
3.84+9.32+6.163.15+7.7+2.85+2.3
4.9+3.28+6.72+2.19.97+5.59-4.97
一、填一填。
5.6+4.71+4.4=5.6+____+4.71
(7.29+1.46)+4.54=____+(____+____)
24.59-3.5-6.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.07+5.3+2.79.09-2.9-3.1
5.88-3.7+2.124.8+0.84+0.16+20.2
8.5+8.7+7.97.53-0.44-6.56
36+8.9+9.3+955.17+5.35+0.65
1.22+1.51+5.783.31+9.8+6.69+0.2
0.9+2.08+6.92+8.18.86+0.34-4.86
一、填一填。
4.8+6.27+5.2=4.8+____+6.27
(3.25+2.73)+4.27=____+(____+____)
49.49-6.6-3.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.17+5.5+4.58.53-2.5-2.5
4.33-1.6+3.678.2+0.95+0.05+21.8
3.5+5.5+1.59.24-3.48-2.52
26+2.7+9.8+151.04+1.57+5.43
4.72+6.73+5.285.02+0.3+2.98+9.7
5.8+0.22+7.78+0.26.61+1.81-1.61
一、填一填。
2.8+5.05+7.2=2.8+____+5.05
(7.63+3.14)+4.86=____+(____+____)
27.59-3.7-6.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.72+4.4+5.68.91-3.1-0.9
5.13-2.2+3.8718.4+0.54+0.46+9.6
6.4+4.2+4.98.44-0.21-4.79
76+6.7+3.7+723.84+0.98+5.02
5.17+7.93+2.834.02+1.6+2.98+8.4
5.5+0.33+7.67+1.56.09+2.15-1.09
一、填一填。
9.5+5.98+0.5=9.5+____+5.98
(1.63+4.69)+5.31=____+(____+____)
44.38-4.3-5.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.86+2.8+3.26.08-3.7-2.3
6.73-1.2+0.273.4+0.39+0.61+18.6
8.6+2.8+9.49.18-1.73-4.27
19+2.9+6.5+433.56+3.98+2.02
3.49+4.15+5.510.26+4.1+5.74+5.9
1.9+1.23+8.77+5.18.84+8.59-6.84
一、填一填。
3.9+8.57+6.1=3.9+____+8.57
(5.09+3.43)+6.57=____+(____+____)
12.37-4.7-5.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.15+2.6+4.47.82-1.6-3.4
5.43-2.5+4.570.6+0.29+0.71+23.4
2.7+6.9+2.88.23-2.84-4.16
79+8.9+1.3+540.91+4.88+4.12
0.23+6.98+7.774.42+2.5+2.58+7.5
3.6+0.28+7.72+3.47.31+4.72-6.31
一、填一填。
6.5+9.58+3.5=6.5+____+9.58
(8.78+4.46)+4.54=____+(____+____)
35.69-2.1-7.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.42+2.1+3.98.52-3.5-1.5
5.63-2.1+3.373.8+0.75+0.25+26.2
5.9+6.4+4.37.95-0.04-4.96
89+2.4+5.2+288.17+1.97+7.03
2.79+6.15+3.214.02+4.9+4.98+5.1
1.1+0.73+8.27+8.96.27+8.68-5.27
一、填一填。
5.9+7.57+4.1=5.9+____+7.57
(3.15+4.79)+1.21=____+(____+____)
23.73-7.6-2.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.59+3.3+6.78.66-3.6-1.4
5.54-1.7+1.460.8+0.96+0.04+21.2
4.8+8.8+7.69.14-2.69-1.31
89+7.9+2.5+359.16+0.09+7.91
1.63+0.97+5.374.06+0.3+2.94+9.7
3.9+2.48+5.52+6.16.96+1.72-4.96
一、填一填。
7.4+8.57+2.6=7.4+____+8.57
(6.79+1.82)+6.18=____+(____+____)
30.51-3.5-6.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.48+2.4+3.69.74-1.1-3.9
6.22-3.7+3.784.1+0.03+0.97+19.9
3.8+4.4+5.59.25-1.83-5.17
48+4.2+2.9+870.25+1.16+5.84
0.79+7.27+6.210.21+0.7+5.79+9.3
1.2+3.24+2.76+6.89.94+2.02-6.94
一、填一填。
6.1+2.64+3.9=6.1+____+2.64
(1.95+4.37)+2.63=____+(____+____)
27.63-3.5-6.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.15+5.6+1.46.44-3.8-1.2
4.64-2.4+3.360.7+0.87+0.13+25.3