人教版四年级数学下册小数加减法简便计算专项练习题65.docx
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人教版四年级数学下册小数加减法简便计算专项练习题65
一、填一填。
3.3+7.16+6.7=3.3+____+7.16
(7.96+1.32)+7.68=____+(____+____)
26.11-6.2-3.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.72+4.1+2.97.15-3.5-2.5
4.33-3.8+3.6715.8+0.57+0.43+14.2
2.5+2.5+2.89.86-3.09-3.91
18+7.6+4.5+771.84+0.59+9.41
3.02+3.36+4.980.34+3.1+6.66+6.9
1.8+3.98+2.02+6.26.44+5.55-3.44
一、填一填。
2.8+9.94+7.2=2.8+____+9.94
(4.52+1.29)+4.71=____+(____+____)
24.96-2.4-7.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.63+3.8+6.26.92-3.2-0.8
4.55-2.6+4.4512.5+0.12+0.88+13.5
6.9+6.3+2.77.58-2.19-3.81
69+1.5+4.7+951.38+1.17+6.83
2.47+6.66+7.530.63+0.2+9.37+9.8
5.7+1.21+8.79+1.37.06+9.54-4.06
一、填一填。
9.4+8.96+0.6=9.4+____+8.96
(9.53+2.52)+5.48=____+(____+____)
15.74-1.7-8.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.81+2.3+5.78.86-2.5-1.5
4.29-3.2+2.713.5+0.53+0.47+26.5
5.5+8.8+1.47.83-2.73-3.27
55+9.8+5.6+589.17+2.02+5.98
5.11+1.19+4.892.07+3.1+7.93+6.9
3.5+4.56+3.44+6.58.01+0.18-4.01
一、填一填。
3.8+6.81+6.2=3.8+____+6.81
(3.69+1.05)+7.95=____+(____+____)
29.95-6.2-3.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.68+3.6+2.46.95-2.5-1.5
4.13-1.3+5.8715.1+0.96+0.04+8.9
2.4+3.7+3.58.58-2.31-4.69
86+1.6+1.8+496.97+3.13+3.87
1.88+8.69+6.123.59+7.9+3.41+2.1
2.5+4.63+2.37+6.56.02+9.07-3.02
一、填一填。
7.2+2.14+2.8=7.2+____+2.14
(5.69+4.41)+1.59=____+(____+____)
33.86-8.7-1.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.27+5.3+4.76.24-3.4-2.6
4.17-2.6+4.834.6+0.65+0.35+22.4
2.5+9.9+1.89.54-1.56-3.44
58+6.3+6.2+783.28+5.95+1.05
4.93+0.08+2.075.52+5.9+4.48+4.1
0.6+3.87+3.13+5.48.98+7.83-6.98
一、填一填。
6.6+8.97+3.4=6.6+____+8.97
(8.83+1.48)+8.52=____+(____+____)
15.61-1.5-8.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.71+5.1+0.99.05-3.2-1.8
4.41-1.3+5.5915.6+0.21+0.79+7.4
1.2+9.8+4.39.53-1.84-4.16
16+3.7+2.8+887.08+4.48+2.52
4.14+4.59+5.863.32+3.3+4.68+6.7
4.6+4.76+3.24+5.46.18+0.56-2.18
一、填一填。
9.8+7.33+0.2=9.8+____+7.33
(5.74+2.75)+3.25=____+(____+____)
17.42-5.4-4.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.78+1.4+5.67.74-2.9-2.1
5.64-3.4+4.3617.3+0.51+0.49+3.7
1.3+5.5+3.77.69-0.09-3.91
18+8.3+1.2+841.25+1.39+4.61
5.49+5.45+4.510.26+0.6+6.74+9.4
2.8+2.35+5.65+6.27.18+6.45-5.18
一、填一填。
2.2+4.76+7.8=2.2+____+4.76
(3.02+3.71)+3.29=____+(____+____)
43.17-8.5-1.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.21+5.3+4.76.95-1.6-4.4
5.35-2.1+1.657.8+0.36+0.64+22.2
3.2+9.3+4.29.28-1.12-3.88
94+8.6+2.9+844.54+1.97+6.03
3.19+4.68+4.812.92+9.2+6.08+0.8
2.1+4.91+2.09+5.96.22+6.63-1.22
一、填一填。
5.8+9.14+4.2=5.8+____+9.14
(8.51+4.11)+5.89=____+(____+____)
44.38-3.6-6.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.84+2.6+5.46.37-3.1-0.9
6.66-2.7+2.3415.6+0.48+0.52+9.4
8.4+2.9+7.48.52-1.75-2.25
42+1.2+9.1+868.41+0.12+7.88
3.95+2.16+5.053.07+1.9+3.93+8.1
3.9+1.87+8.13+5.17.85+0.68-4.85
一、填一填。
8.4+5.78+1.6=8.4+____+5.78
(8.71+1.39)+6.61=____+(____+____)
15.92-3.9-6.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.75+4.2+1.87.07-2.4-2.6
5.35-2.7+2.654.9+0.53+0.47+18.1
1.4+8.8+8.19.05-1.67-5.33
73+9.6+4.5+551.25+3.52+3.48
2.92+6.64+3.082.59+7.4+7.41+2.6
0.7+3.17+2.83+8.36.39+8.18-4.39
一、填一填。
8.4+1.56+1.6=8.4+____+1.56
(4.99+4.27)+3.73=____+(____+____)
18.97-2.7-7.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.05+5.8+1.29.96-3.5-1.5
4.49-3.5+2.513.7+0.71+0.29+20.3
6.8+9.9+4.39.13-3.75-2.25
34+9.4+8.2+259.36+3.61+6.39
3.31+2.33+2.693.77+8.4+4.23+1.6
0.3+1.08+7.92+9.78.83+2.64-5.83
一、填一填。
6.5+3.04+3.5=6.5+____+3.04
(3.77+3.44)+3.56=____+(____+____)
26.35-7.6-2.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.01+2.7+6.38.05-3.3-0.7
5.79-3.1+4.215.9+0.97+0.03+19.1
5.5+2.9+8.48.52-3.33-3.67
73+9.6+4.5+729.36+5.21+1.79
4.03+0.78+2.972.16+1.8+6.84+8.2
4.5+4.25+1.75+3.58.45+8.02-7.45
一、填一填。
9.8+3.35+0.2=9.8+____+3.35
(3.58+1.98)+4.02=____+(____+____)
30.06-5.4-4.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.21+3.8+5.28.89-3.6-0.4
4.27-2.4+2.7313.1+0.21+0.79+10.9
6.5+4.9+3.78.38-2.08-4.92
53+5.8+2.3+311.69+0.21+5.79
2.41+5.19+4.593.16+8.5+3.84+1.5
4.4+2.92+5.08+2.69.72+5.17-4.72
一、填一填。
1.6+5.77+8.4=1.6+____+5.77
(3.27+4.21)+3.79=____+(____+____)
12.65-1.2-8.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.51+2.1+7.96.32-3.9-2.1
5.35-2.2+1.6516.4+0.86+0.14+13.6
1.6+9.6+2.88.64-3.14-1.86
87+8.2+9.6+768.68+0.88+9.12
0.57+3.39+6.435.25+2.6+0.75+7.4
2.8+0.67+6.33+4.28.19+1.91-3.19
一、填一填。
2.2+4.67+7.8=2.2+____+4.67
(4.81+1.56)+7.44=____+(____+____)
46.16-8.6-1.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.11+4.9+5.18.09-1.4-3.6
4.29-3.8+5.7115.9+0.12+0.88+12.1
8.3+2.2+8.87.69-1.73-4.27
85+1.8+4.6+541.59+2.65+6.35
3.91+5.07+2.091.73+4.4+6.27+5.6
2.1+3.91+1.09+5.99.31+8.97-6.31
一、填一填。
8.5+1.39+1.5=8.5+____+1.39
(7.05+1.61)+8.39=____+(____+____)
10.29-2.3-7.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.44+1.5+6.58.22-2.6-2.4
5.69-1.2+2.311.3+0.49+0.51+20.7
4.2+7.6+2.99.21-1.02-3.98
28+8.8+9.3+467.71+1.18+5.82
1.75+9.52+6.255.19+9.9+1.81+0.1
4.6+3.94+2.06+2.47.19+4.57-4.19
一、填一填。
1.6+6.48+8.4=1.6+____+6.48
(6.11+3.84)+3.16=____+(____+____)
27.51-7.5-2.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.66+1.9+5.17.76-3.1-2.9
5.27-1.7+1.734.4+0.17+0.83+25.6
4.4+2.2+4.89.87-0.83-6.17
67+7.2+3.8+222.97+1.84+4.16
1.86+2.77+5.142.15+7.9+6.85+2.1
3.1+2.98+2.02+3.98.36+0.93-6.36
一、填一填。
7.7+1.77+2.3=7.7+____+1.77
(1.66+2.11)+6.89=____+(____+____)
10.06-6.9-3.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.33+5.5+1.56.85-1.9-3.1
4.97-3.5+3.039.1+0.31+0.69+17.9