四年级数学下册小数加减法简便计算专项练习题60.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60
一、填一填。
1.3+2.66+8.7=1.3+____+2.66
(5.61+3.11)+5.89=____+(____+____)
16.11-1.1-8.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.18+2.8+6.29.22-3.5-2.5
5.35-2.4+2.655.2+0.76+0.24+22.8
4.7+7.9+9.87.16-0.38-3.62
27+7.3+8.2+979.24+5.75+1.25
4.33+1.74+3.675.95+1.7+2.05+8.3
3.9+0.72+8.28+2.19.06+3.63-7.06
一、填一填。
4.4+1.21+5.6=4.4+____+1.21
(1.57+2.11)+3.89=____+(____+____)
37.03-6.3-3.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.95+5.2+0.88.47-2.3-3.7
4.44-3.8+3.565.3+0.05+0.95+21.7
3.8+1.5+1.28.64-1.91-5.09
71+3.3+8.7+352.66+0.37+7.63
3.41+5.94+2.595.86+3.6+0.14+6.4
1.6+4.64+2.36+6.46.02+7.53-2.02
一、填一填。
9.1+5.26+0.9=9.1+____+5.26
(7.86+2.15)+3.85=____+(____+____)
36.98-8.8-1.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.11+2.2+7.89.25-3.4-1.6
5.22-3.5+4.783.6+0.36+0.64+17.4
7.9+2.8+3.37.82-2.34-2.66
64+7.8+4.1+236.86+5.94+4.06
5.02+7.99+3.982.65+2.8+3.35+7.2
4.2+3.38+4.62+5.89.18+9.06-6.18
一、填一填。
1.7+8.38+8.3=1.7+____+8.38
(6.11+3.63)+6.37=____+(____+____)
34.72-8.9-1.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.15+4.2+1.86.16-2.6-1.4
6.51-2.1+0.498.3+0.68+0.32+11.7
3.1+3.6+1.98.99-2.63-1.37
99+4.8+5.4+238.44+4.75+4.25
2.97+2.51+6.033.63+7.7+3.37+2.3
2.8+0.99+4.01+5.28.93+9.66-3.93
一、填一填。
2.6+7.66+7.4=2.6+____+7.66
(5.85+4.08)+2.92=____+(____+____)
32.35-4.6-5.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.24+2.7+4.37.98-3.5-0.5
6.08-2.4+3.9212.6+0.13+0.87+10.4
2.1+5.4+3.29.42-0.57-4.43
31+2.7+4.9+860.84+5.39+3.61
3.82+2.35+5.185.68+9.7+2.32+0.3
4.8+0.83+8.17+3.29.22+9.95-5.22
一、填一填。
8.6+3.82+1.4=8.6+____+3.82
(3.39+2.87)+3.13=____+(____+____)
19.51-2.5-7.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.98+5.6+2.49.96-1.2-2.8
4.06-1.9+4.9413.2+0.13+0.87+16.8
3.9+2.8+9.38.76-0.06-5.94
31+9.3+7.4+268.98+2.94+5.06
1.55+0.64+6.451.12+2.3+8.88+7.7
4.3+0.41+9.59+4.78.93+1.01-6.93
一、填一填。
5.7+9.95+4.3=5.7+____+9.95
(9.13+1.55)+7.45=____+(____+____)
18.13-6.4-3.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.67+4.5+3.56.72-2.5-3.5
6.21-1.8+0.790.1+0.33+0.67+23.9
6.6+1.2+4.68.44-1.78-3.22
14+3.2+7.6+366.44+1.36+4.64
3.26+3.71+5.743.21+0.3+5.79+9.7
2.1+1.46+4.54+6.96.76+2.27-4.76
一、填一填。
1.2+3.85+8.8=1.2+____+3.85
(6.99+3.61)+2.39=____+(____+____)
12.07-8.1-1.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.92+3.9+3.16.99-2.9-3.1
6.22-1.8+0.785.6+0.06+0.94+21.4
5.5+8.3+3.87.93-0.26-3.74
94+7.7+1.9+537.49+0.79+7.21
1.22+0.55+4.784.79+3.8+3.21+6.2
1.9+2.73+5.27+5.17.84+2.21-6.84
一、填一填。
3.1+2.12+6.9=3.1+____+2.12
(7.03+2.53)+7.47=____+(____+____)
48.71-6.4-3.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.14+5.2+2.87.53-2.5-2.5
6.06-1.4+1.948.8+0.44+0.56+19.2
6.6+5.2+2.68.64-0.85-6.15
65+5.9+1.7+734.28+0.11+6.89
2.38+3.04+4.623.67+1.7+2.33+8.3
2.2+2.79+5.21+3.86.49+3.82-2.49
一、填一填。
9.8+3.22+0.2=9.8+____+3.22
(1.03+2.94)+5.06=____+(____+____)
15.77-4.6-5.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.09+2.3+3.78.52-3.9-1.1
6.36-3.3+3.640.5+0.38+0.62+27.5
8.2+1.1+2.57.15-3.36-0.64
51+4.8+3.1+190.37+3.38+2.62
1.52+6.45+7.485.05+9.8+3.95+0.2
1.3+2.42+6.58+6.78.07+6.83-3.07