人教版四年级数学下册小数加减法简便计算专项练习题111.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111
一、填一填。
2.7+7.15+7.3=2.7+____+7.15
(5.73+1.46)+7.54=____+(____+____)
36.98-4.6-5.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.77+5.4+2.66.76-3.7-2.3
4.71-2.1+4.2912.9+0.32+0.68+7.1
9.1+8.9+7.67.79-1.08-2.92
55+1.5+2.4+490.65+4.41+3.59
0.32+9.78+8.685.54+2.2+3.46+7.8
3.8+0.12+6.88+3.26.34+8.91-3.34
一、填一填。
4.8+1.06+5.2=4.8+____+1.06
(8.96+4.75)+1.25=____+(____+____)
33.76-2.8-7.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.13+1.5+4.57.92-1.5-2.5
4.14-1.3+4.8618.3+0.93+0.07+10.7
8.7+7.2+7.68.81-2.39-3.61
64+6.9+1.2+960.87+1.15+7.85
0.25+6.76+5.753.61+3.2+2.39+6.8
2.7+1.75+7.25+5.39.34+6.62-4.34
一、填一填。
2.5+4.77+7.5=2.5+____+4.77
(8.42+1.54)+7.46=____+(____+____)
31.35-4.9-5.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.06+4.3+4.78.02-2.7-2.3
4.38-1.6+4.626.9+0.44+0.56+16.1
7.6+5.3+2.67.18-2.29-3.71
96+2.1+7.3+320.31+5.56+4.44
5.73+8.31+2.273.49+9.7+3.51+0.3
1.7+4.82+0.18+6.39.94+0.27-8.94
一、填一填。
9.5+2.66+0.5=9.5+____+2.66
(6.64+2.02)+7.98=____+(____+____)
26.56-1.1-8.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.03+3.5+6.58.08-1.7-2.3
4.18-1.3+4.829.4+0.29+0.71+11.6
1.6+5.5+4.78.59-1.58-5.42
39+5.1+7.7+814.37+3.23+2.77
3.39+0.03+5.614.73+3.6+2.27+6.4
4.7+1.22+6.78+5.36.37+0.15-3.37
一、填一填。
2.3+1.84+7.7=2.3+____+1.84
(2.09+3.15)+2.85=____+(____+____)
11.69-2.1-7.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.31+2.7+4.39.09-3.4-2.6
5.15-1.2+2.856.8+0.89+0.11+15.2
9.4+5.1+3.99.53-2.87-1.13
86+3.6+3.7+112.17+1.71+6.29
2.99+5.85+7.013.54+4.3+6.46+5.7
1.1+0.57+5.43+7.99.45+4.53-8.45
一、填一填。
8.1+3.18+1.9=8.1+____+3.18
(8.59+4.34)+2.66=____+(____+____)
31.31-8.3-1.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.16+4.9+3.19.67-2.9-3.1
4.41-2.2+2.5918.4+0.77+0.23+10.6
7.4+9.9+5.88.51-2.84-1.16
57+8.8+6.4+354.33+5.63+0.37
1.82+0.91+6.180.77+4.5+6.23+5.5
4.3+0.38+5.62+5.77.26+2.84-2.26
一、填一填。
6.5+4.97+3.5=6.5+____+4.97
(2.39+3.99)+2.01=____+(____+____)
42.81-5.4-4.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.16+4.6+4.48.12-3.2-1.8
6.04-1.1+1.9611.9+0.01+0.99+9.1
7.5+1.9+6.99.01-0.99-5.01
29+8.9+9.9+414.09+2.28+3.72
4.74+4.27+3.264.72+0.6+2.28+9.4
4.9+4.72+1.28+2.18.08+1.56-3.08
一、填一填。
6.2+9.46+3.8=6.2+____+9.46
(9.71+2.54)+7.46=____+(____+____)
23.05-6.5-3.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.75+4.6+1.49.91-3.7-0.3
6.43-3.4+3.578.5+0.88+0.12+16.5
9.9+2.2+8.38.82-3.61-3.39
66+3.1+9.8+667.82+3.42+4.58
3.07+7.92+6.931.72+8.3+8.28+1.7
4.6+4.36+3.64+3.48.64+6.53-4.64
一、填一填。
3.4+5.37+6.6=3.4+____+5.37
(4.88+2.22)+7.78=____+(____+____)
45.46-3.5-6.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.52+1.8+6.26.41-1.1-4.9
6.44-2.4+2.563.3+0.26+0.74+18.7
8.1+3.1+1.77.07-2.98-1.02
74+8.5+2.8+294.96+2.77+3.23
0.94+3.95+5.064.65+8.6+4.35+1.4
4.9+3.34+3.66+2.18.46+1.96-5.46
一、填一填。
7.4+4.44+2.6=7.4+____+4.44
(6.68+2.89)+7.11=____+(____+____)
29.84-1.4-8.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.02+2.8+3.26.86-3.7-1.3
6.03-3.4+0.979.4+0.75+0.25+19.6
5.5+8.2+5.78.44-0.78-3.22
24+3.6+6.1+631.57+4.72+5.28
5.16+4.18+2.841.77+3.3+8.23+6.7
3.5+0.06+7.94+6.58.06+1.47-6.06
一、填一填。
5.4+3.51+4.6=5.4+____+3.51
(9.39+3.28)+2.72=____+(____+____)
48.71-2.8-7.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.54+3.4+4.68.54-2.8-2.2
6.35-3.6+0.6511.8+0.49+0.51+16.2
6.4+7.8+1.98.43-3.15-2.85
84+6.2+8.7+896.44+4.77+4.23
0.53+3.29+7.473.49+8.5+5.51+1.5
3.2+0.82+7.18+3.88.51+0.85-3.51
一、填一填。
6.7+8.33+3.3=6.7+____+8.33
(8.11+1.52)+8.48=____+(____+____)
42.64-8.5-1.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.48+3.2+2.89.08-2.3-1.7
4.92-1.7+5.0815.6+0.46+0.54+7.4
8.2+9.7+7.48.59-0.51-4.49
63+3.3+9.5+335.77+5.67+1.33
1.09+9.44+7.913.02+3.4+6.98+6.6
5.2+2.58+2.42+2.89.23+4.65-7.23
一、填一填。
5.4+3.15+4.6=5.4+____+3.15
(9.66+3.43)+2.57=____+(____+____)
32.28-8.8-1.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.14+4.2+5.86.89-3.4-0.6
4.58-2.4+4.425.2+0.45+0.55+23.8
4.3+4.5+7.68.55-0.66-6.34
54+4.1+2.3+969.66+4.29+4.71
0.16+3.59+6.845.66+6.8+1.34+3.2
3.5+3.12+5.88+3.56.22+9.15-4.22
一、填一填。
4.4+5.36+5.6=4.4+____+5.36
(6.36+2.24)+7.76=____+(____+____)
38.23-1.1-8.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.67+4.1+3.98.51-3.3-0.7
5.14-1.7+2.8619.3+0.53+0.47+2.7
9.1+6.2+4.98.61-3.64-0.36
48+6.2+1.4+482.91+0.78+5.22
2.89+6.95+6.111.02+1.2+4.98+8.8
2.8+1.28+7.72+6.29.28+8.54-6.28
一、填一填。
8.3+2.34+1.7=8.3+____+2.34
(8.18+3.85)+6.15=____+(____+____)
14.03-1.2-8.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.71+5.6+1.47.29-3.7-2.3
5.79-3.4+1.215.9+0.71+0.29+15.1
8.1+8.3+1.98.92-0.97-3.03
52+5.2+4.5+254.66+5.49+3.51
3.54+5.62+3.460.61+2.4+7.39+7.6
5.1+2.33+5.67+0.96.08+3.61-2.08
一、填一填。
6.2+2.24+3.8=6.2+____+2.24
(4.57+2.56)+6.44=____+(____+____)
14.24-4.3-5.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.94+3.9+4.17.84-2.5-3.5
5.34-2.5+3.668.5+0.02+0.98+11.5
7.7+5.2+1.78.05-3.28-3.72
21+7.1+3.8+410.08+3.01+2.99
4.24+9.44+4.765.95+5.9+1.05+4.1
5.2+4.65+0.35+3.89.65+8.24-6.65
一、填一填。
4.5+6.03+5.5=4.5+____+6.03
(5.79+1.83)+7.17=____+(____+____)
11.51-5.9-4.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.86+1.9+5.16.61-3.3-1.7
6.43-3.2+2.5713.2+0.84+0.16+11.8
1.6+5.8+4.89.49-1.34-2.66
16+8.6+8.1+163.37+2.04+6.96
2.79+9.42+7.214.66+2.9+2.34+7.1
0.1+2.21+7.79+9.98.96+0.99-3.96
一、填一填。
6.3+5.78+3.7=6.3+____+5.78
(5.36+4.61)+1.39=____+(____+____)
30.97-8.2-1.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.69+5.1+3.97.11-3.2-2.8
4.87-1.7+2.138.9+0.28+0.72+15.1