人教版四年级数学下册小数加减法简便计算练习题49.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49
一、填一填。
4.9+3.07+5.1=4.9+____+3.07
(9.29+3.76)+5.24=____+(____+____)
21.01-8.4-1.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.11+4.3+4.79.69-2.6-1.4
4.36-2.2+5.6416.6+0.16+0.84+7.4
1.7+8.6+1.27.51-1.27-5.73
99+5.9+4.4+289.37+0.41+6.59
4.93+4.43+2.070.34+9.2+5.66+0.8
0.9+3.68+6.32+8.16.74+3.33-4.74
一、填一填。
8.6+7.24+1.4=8.6+____+7.24
(8.64+1.83)+7.17=____+(____+____)
40.02-4.9-5.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.23+5.3+0.77.81-2.9-1.1
5.16-3.4+3.8418.2+0.33+0.67+2.8
3.2+4.5+7.89.15-3.86-0.14
51+6.1+4.5+354.64+0.68+5.32
3.47+0.14+3.534.56+8.6+2.44+1.4
5.3+2.29+5.71+1.79.28+9.07-5.28
一、填一填。
9.8+1.84+0.2=9.8+____+1.84
(5.93+3.58)+2.42=____+(____+____)
42.01-7.8-2.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.16+1.3+5.78.56-2.6-2.4
6.53-2.6+1.4716.3+0.29+0.71+8.7
7.4+6.5+7.48.05-0.19-3.81
81+6.1+3.4+586.58+2.78+7.22
5.96+9.19+4.040.34+0.3+9.66+9.7
0.7+3.95+2.05+6.38.43+0.34-4.43
一、填一填。
6.7+4.21+3.3=6.7+____+4.21
(2.34+4.64)+4.36=____+(____+____)
25.47-6.5-3.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.81+1.1+6.97.69-2.8-1.2
5.26-1.4+3.7417.2+0.59+0.41+4.8
4.3+5.7+5.67.79-2.76-1.24
13+1.1+1.6+326.14+5.59+4.41
3.23+8.39+2.774.07+7.8+5.93+2.2
1.6+3.28+1.72+4.49.12+6.05-5.12
一、填一填。
2.1+5.57+7.9=2.1+____+5.57
(4.07+2.53)+6.47=____+(____+____)
46.12-3.7-6.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.05+3.8+5.27.78-3.4-0.6
4.34-3.2+3.6612.4+0.11+0.89+15.6
2.9+2.2+1.97.91-1.29-5.71
27+6.7+4.4+943.73+4.78+1.22
1.62+5.89+5.380.78+5.6+9.22+4.4
0.5+3.27+5.73+7.56.88+8.99-4.88
一、填一填。
8.2+1.93+1.8=8.2+____+1.93
(1.05+1.74)+6.26=____+(____+____)
29.09-6.2-3.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.97+1.9+4.19.16-2.1-1.9
6.58-3.5+2.424.3+0.28+0.72+15.7
3.3+4.2+5.48.45-3.23-3.77
94+8.7+1.7+634.75+3.43+2.57
3.78+3.02+5.225.23+3.7+3.77+6.3
2.5+3.71+5.29+4.57.53+8.23-3.53
一、填一填。
9.8+1.98+0.2=9.8+____+1.98
(9.63+1.93)+6.07=____+(____+____)
11.69-6.8-3.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.42+4.4+2.66.88-2.5-2.5
6.98-2.3+1.0213.5+0.99+0.01+6.5
8.8+8.8+4.49.11-0.58-5.42
95+1.2+2.7+311.72+0.12+5.88
1.58+3.19+7.422.85+7.1+7.15+2.9
5.5+4.04+5.96+1.57.25+0.63-6.25
一、填一填。
4.7+4.93+5.3=4.7+____+4.93
(7.24+3.74)+5.26=____+(____+____)
11.46-8.8-1.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.04+3.8+5.28.47-2.1-2.9
6.37-1.6+0.6316.2+0.41+0.59+12.8
5.6+2.7+1.49.36-1.33-3.67
44+7.5+9.5+986.09+3.87+2.13
1.39+9.33+4.615.14+3.2+1.86+6.8
3.6+2.97+7.03+2.48.84+3.06-7.84
一、填一填。
4.1+8.03+5.9=4.1+____+8.03
(4.16+4.01)+5.99=____+(____+____)
15.47-3.3-6.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.13+1.8+7.26.71-2.4-2.6
5.12-1.4+2.880.3+0.83+0.17+28.7
1.4+2.6+8.89.51-0.67-3.33
13+1.1+5.4+817.65+5.14+2.86
2.94+9.02+3.061.18+7.2+4.82+2.8
5.2+2.07+6.93+1.86.47+6.47-2.47
一、填一填。
5.9+1.35+4.1=5.9+____+1.35
(2.56+2.93)+5.07=____+(____+____)
30.46-6.5-3.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.53+1.3+7.79.55-2.6-3.4
5.93-1.2+2.0713.3+0.48+0.52+8.7
2.7+7.4+3.27.28-3.72-0.28
86+5.5+3.6+491.75+1.93+6.07
1.84+7.35+5.165.87+7.4+0.13+2.6
5.9+0.92+4.08+1.18.22+2.97-5.22
一、填一填。
8.8+6.54+1.2=8.8+____+6.54
(3.13+3.43)+3.57=____+(____+____)
46.54-8.8-1.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.79+2.5+4.58.84-3.3-2.7
6.34-1.2+3.6618.6+0.96+0.04+9.4
6.9+6.5+4.28.86-0.36-4.64
62+5.5+5.2+980.68+3.39+2.61
4.17+8.32+3.832.01+0.3+7.99+9.7
0.7+4.17+4.83+8.36.74+8.46-4.74
一、填一填。
4.8+5.73+5.2=4.8+____+5.73
(4.46+3.22)+4.78=____+(____+____)
38.52-3.2-6.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.08+3.3+2.77.04-1.8-3.2
4.09-1.1+4.916.6+0.93+0.07+15.4
9.4+9.4+4.77.97-1.82-5.18
34+2.4+5.1+913.76+4.34+3.66
5.88+3.57+1.120.75+8.1+6.25+1.9
0.6+2.46+5.54+6.46.48+9.69-5.48
一、填一填。
6.9+9.32+3.1=6.9+____+9.32
(8.78+2.13)+4.87=____+(____+____)
15.23-5.6-4.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.61+1.2+8.88.93-2.8-2.2
5.81-1.4+4.190.6+0.34+0.66+28.4
7.7+3.7+7.67.12-2.31-4.69
21+6.2+1.9+256.32+2.29+5.71
4.16+8.02+4.844.51+6.7+2.49+3.3
4.7+1.34+3.66+4.39.24+6.04-5.24
一、填一填。
1.7+4.45+8.3=1.7+____+4.45
(7.99+3.07)+2.93=____+(____+____)
27.82-5.2-4.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.04+3.4+2.67.82-3.7-0.3
5.94-3.1+1.067.4+0.31+0.69+15.6
4.2+1.3+4.88.82-0.98-5.02
34+9.8+2.3+262.56+2.17+3.83
2.77+8.83+6.230.14+1.6+6.86+8.4
5.5+1.09+3.91+0.58.77+7.84-7.77
一、填一填。
5.5+9.22+4.5=5.5+____+9.22
(2.99+3.74)+2.26=____+(____+____)
30.46-7.5-2.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.78+3.9+6.19.19-2.3-2.7
4.34-1.1+4.660.3+0.42+0.58+24.7
9.8+8.3+8.19.23-3.11-2.89
87+2.4+5.8+879.83+0.19+9.81
1.84+0.34+4.164.81+8.6+3.19+1.4
5.2+1.77+3.23+0.89.69+5.25-7.69
一、填一填。
2.2+5.64+7.8=2.2+____+5.64
(9.94+4.21)+2.79=____+(____+____)
17.26-5.6-4.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.15+4.1+2.99.15-2.5-3.5
5.91-1.9+4.095.1+0.82+0.18+23.9
1.3+8.8+6.68.45-0.42-5.58
69+6.1+9.4+267.38+3.18+3.82
5.11+1.39+2.891.95+2.9+4.05+7.1
1.3+0.04+8.96+5.78.63+3.03-7.63
一、填一填。
4.1+2.22+5.9=4.1+____+2.22
(4.01+4.89)+4.11=____+(____+____)
37.71-4.7-5.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.45+2.4+4.66.37-2.8-3.2
6.84-2.3+0.165.4+0.01+0.99+17.6
1.9+7.3+4.39.53-1.86-5.14
15+3.1+7.2+216.61+5.47+0.53
4.28+9.36+3.720.94+8.6+7.06+1.4
0.1+2.69+3.31+6.96.39+8.27-5.39
一、填一填。
8.3+2.83+1.7=8.3+____+2.83
(8.52+2.65)+6.35=____+(____+____)
47.26-1.7-8.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.15+4.4+2.66.67-1.4-4.6
6.35-3.4+2.6514.8+0.35+0.65+6.2