四年级数学下册小数加减法简便计算专项练习题63.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63
一、填一填。
1.1+2.94+8.9=1.1+____+2.94
(6.18+1.95)+4.05=____+(____+____)
30.42-2.5-7.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.47+1.6+4.48.89-2.4-2.6
4.61-2.5+3.394.3+0.72+0.28+20.7
9.5+8.2+7.57.55-2.37-2.63
66+8.8+7.8+878.31+2.51+5.49
0.74+2.46+5.263.98+6.1+6.02+3.9
2.7+0.76+8.24+5.39.05+9.83-6.05
一、填一填。
5.8+8.91+4.2=5.8+____+8.91
(7.15+4.07)+4.93=____+(____+____)
12.53-7.3-2.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.35+3.2+5.86.02-3.7-2.3
4.23-2.2+2.779.8+0.35+0.65+16.2
8.8+2.5+8.28.15-0.96-6.04
83+1.8+4.9+565.01+2.47+7.53
5.25+5.08+0.751.47+3.1+8.53+6.9
2.6+1.05+6.95+4.46.08+2.95-3.08
一、填一填。
6.5+4.41+3.5=6.5+____+4.41
(1.63+2.94)+3.06=____+(____+____)
45.82-1.2-8.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.11+2.3+4.76.31-1.5-4.5
4.92-2.1+5.082.4+0.78+0.22+20.6
6.2+8.4+8.39.74-2.25-3.75
93+8.8+8.1+158.22+4.65+4.35
1.44+1.17+5.563.96+2.8+3.04+7.2
3.8+1.58+6.42+6.29.76+1.96-4.76
一、填一填。
9.2+4.93+0.8=9.2+____+4.93
(8.95+3.16)+6.84=____+(____+____)
44.75-1.3-8.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.51+2.6+3.49.34-2.7-2.3
4.98-3.6+5.028.7+0.09+0.91+16.3
5.5+4.2+6.69.61-3.82-0.18
83+4.4+3.7+292.76+5.93+1.07
5.54+6.18+0.464.17+9.2+1.83+0.8
0.3+4.78+4.22+6.76.11+5.19-5.11
一、填一填。
2.5+4.31+7.5=2.5+____+4.31
(1.87+4.22)+4.78=____+(____+____)
33.29-5.3-4.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.46+4.9+2.16.77-1.9-3.1
4.41-1.7+2.596.6+0.58+0.42+16.4
1.6+6.1+9.88.75-0.03-6.97
31+3.5+9.1+342.16+0.22+9.78
3.03+4.18+5.972.77+6.7+3.23+3.3
4.3+3.29+3.71+2.77.47+0.16-4.47
一、填一填。
9.7+5.39+0.3=9.7+____+5.39
(6.17+3.07)+4.93=____+(____+____)
35.95-5.6-4.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.48+2.2+5.87.44-1.9-4.1
6.76-2.8+3.2415.8+0.08+0.92+8.2
3.2+5.2+9.49.07-3.66-0.34
22+1.4+2.7+974.98+2.37+3.63
1.58+1.28+5.420.14+1.4+7.86+8.6
2.2+1.33+8.67+7.88.81+4.07-4.81
一、填一填。
8.9+6.13+1.1=8.9+____+6.13
(2.96+2.12)+6.88=____+(____+____)
16.85-1.9-8.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.56+3.6+6.46.13-1.9-2.1
4.08-1.4+5.921.5+0.74+0.26+23.5
3.9+6.5+6.49.46-2.93-1.07
54+2.9+6.6+519.96+3.35+5.65
5.53+6.86+4.474.46+5.4+5.54+4.6
2.9+3.56+5.44+4.18.96+9.87-3.96
一、填一填。
6.3+3.76+3.7=6.3+____+3.76
(1.58+2.67)+4.33=____+(____+____)
43.78-1.4-8.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.89+5.7+2.37.14-1.3-3.7
5.72-3.2+3.286.9+0.11+0.89+22.1
2.6+8.7+5.28.41-2.07-2.93
84+3.9+7.8+870.48+3.98+6.02
4.94+4.51+4.060.69+9.5+7.31+0.5
0.1+2.06+7.94+6.96.13+4.61-4.13
一、填一填。
2.7+7.03+7.3=2.7+____+7.03
(9.14+2.01)+7.99=____+(____+____)
29.35-2.6-7.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.65+2.7+6.38.83-2.9-1.1
5.28-3.6+3.7219.7+0.25+0.75+9.3
5.9+7.2+7.49.99-2.59-2.41
34+9.8+2.9+924.83+3.44+5.56
4.25+0.82+3.753.18+2.2+2.82+7.8
4.1+0.86+5.14+3.96.43+8.16-4.43
一、填一填。
7.8+2.65+2.2=7.8+____+2.65
(8.35+3.41)+6.59=____+(____+____)
17.51-1.4-8.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.14+3.2+4.86.55-1.6-4.4
4.41-1.1+5.5918.2+0.51+0.49+8.8
1.6+1.2+3.87.97-2.57-3.43
21+2.9+1.4+459.77+3.31+2.69
0.36+6.93+8.642.72+8.8+5.28+1.2
5.1+1.38+4.62+3.99.99+2.89-7.99