人教版四年级数学下册小数加减法简便计算专项练习题74.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74
一、填一填。
4.5+5.59+5.5=4.5+____+5.59
(8.93+2.57)+6.43=____+(____+____)
49.87-4.7-5.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.14+5.2+2.87.28-1.8-3.2
4.92-3.9+3.088.9+0.56+0.44+12.1
3.8+4.3+6.38.86-2.64-3.36
48+8.2+2.7+374.36+5.86+4.14
4.33+9.85+1.673.33+7.5+3.67+2.5
1.9+4.13+3.87+4.17.89+1.38-3.89
一、填一填。
4.6+8.88+5.4=4.6+____+8.88
(6.79+4.08)+2.92=____+(____+____)
19.43-8.7-1.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
2.75+4.7+1.39.45-1.4-3.6
5.48-2.8+1.5219.6+0.74+0.26+2.4
9.2+5.9+3.38.41-2.17-3.83
45+1.3+3.9+294.52+5.79+2.21
4.45+1.63+3.553.29+1.5+4.71+8.5
1.2+0.57+5.43+6.88.81+4.34-6.81
一、填一填。
1.2+1.43+8.8=1.2+____+1.43
(4.41+3.66)+4.34=____+(____+____)
47.61-8.7-1.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.18+4.3+2.77.26-1.3-4.7
6.63-3.2+1.373.4+0.22+0.78+26.6
8.2+2.1+8.99.82-2.47-2.53
93+5.1+1.3+939.77+5.01+1.99
2.53+5.26+3.471.85+3.3+8.15+6.7
2.5+3.93+4.07+6.56.14+9.85-5.14
一、填一填。
2.6+5.22+7.4=2.6+____+5.22
(7.42+1.45)+6.55=____+(____+____)
32.87-1.8-8.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.14+2.9+6.19.09-2.1-1.9
4.25-3.8+2.7512.4+0.65+0.35+11.6
2.6+1.9+1.49.54-0.07-5.93
45+2.7+5.7+667.03+1.54+6.46
5.09+2.41+4.911.04+7.7+8.96+2.3
3.3+0.46+6.54+2.79.57+0.38-4.57
一、填一填。
8.2+6.34+1.8=8.2+____+6.34
(5.91+3.98)+6.02=____+(____+____)
31.75-1.5-8.5=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.74+3.1+6.96.54-3.5-2.5
6.31-1.9+2.693.2+0.34+0.66+19.8
1.5+2.3+9.39.21-2.38-1.62
58+1.7+4.9+252.08+0.74+5.26
5.88+7.04+1.122.99+3.3+3.01+6.7
0.5+1.86+4.14+9.59.81+0.94-7.81
一、填一填。
5.1+3.84+4.9=5.1+____+3.84
(5.07+1.01)+7.99=____+(____+____)
41.56-6.2-3.8=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.82+1.8+5.28.33-1.4-2.6
4.81-2.9+2.190.4+0.04+0.96+24.6
1.9+4.9+7.59.74-1.16-4.84
38+5.6+3.9+953.06+2.89+6.11
0.86+5.85+5.145.59+1.3+3.41+8.7
5.9+3.44+5.56+3.17.89+7.96-5.89
一、填一填。
3.5+6.26+6.5=3.5+____+6.26
(2.71+3.97)+2.03=____+(____+____)
33.73-6.7-3.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.84+1.2+7.86.78-2.8-3.2
4.69-1.6+3.3111.8+0.31+0.69+17.2
9.7+5.2+6.49.08-3.87-1.13
28+7.7+1.3+129.29+4.43+4.57
3.64+8.27+3.364.73+2.1+5.27+7.9
0.1+4.71+1.29+8.96.14+3.96-3.14
一、填一填。
5.6+3.56+4.4=5.6+____+3.56
(4.77+2.62)+3.38=____+(____+____)
40.14-2.1-7.9=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.95+4.9+5.18.29-3.8-2.2
6.85-2.2+0.155.3+0.81+0.19+15.7
7.3+3.8+6.27.79-0.38-3.62
47+4.1+9.1+375.21+1.06+5.94
1.25+8.89+6.753.22+8.6+6.78+1.4
1.1+2.18+5.82+6.99.29+9.88-5.29
一、填一填。
1.3+4.03+8.7=1.3+____+4.03
(3.63+2.08)+6.92=____+(____+____)
43.92-3.7-6.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.86+1.8+8.27.17-2.4-2.6
6.68-2.1+2.3216.6+0.56+0.44+10.4
9.2+7.7+2.78.58-0.93-3.07
25+8.9+6.7+539.02+2.04+6.96
2.53+8.14+5.472.29+1.8+5.71+8.2
4.7+3.08+4.92+5.37.08+1.85-5.08
一、填一填。
9.5+3.02+0.5=9.5+____+3.02
(9.74+1.09)+5.91=____+(____+____)
39.12-2.7-7.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
1.62+2.1+5.98.58-1.5-3.5
6.15-2.9+3.8517.9+0.85+0.15+7.1
4.5+3.6+5.67.27-0.86-3.14
16+7.3+6.3+626.28+5.75+4.25
0.45+3.66+9.551.52+2.5+4.48+7.5
5.3+0.87+4.13+0.78.76+7.26-6.76
一、填一填。
3.7+4.59+6.3=3.7+____+4.59
(6.57+4.22)+1.78=____+(____+____)
30.82-2.8-7.2=____〇(____〇____)
二、下面各题怎样简便怎样计算。
3.42+4.2+4.87.14-1.3-3.7
6.52-3.9+0.487.5+0.43+0.57+21.5
6.1+5.9+5.19.15-3.35-0.65
56+8.4+1.9+510.95+5.64+1.36
5.36+5.21+1.644.62+2.6+3.38+7.4
3.4+1.81+7.19+5.66.76+4.86-4.76
一、填一填。
7.1+1.15+2.9=7.1+____+1.15
(7.15+4.44)+2.56=____+(____+____)
34.32-5.4-4.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
4.64+5.6+1.49.08-2.5-2.5
4.02-3.8+5.9818.6+0.83+0.17+3.4
5.8+1.8+1.28.34-0.78-5.22
23+2.7+7.6+936.17+4.29+2.71
1.35+2.96+4.652.56+4.5+3.44+5.5
0.3+0.16+9.84+9.77.62+2.34-5.62
一、填一填。
5.1+1.17+4.9=5.1+____+1.17
(7.38+2.54)+3.46=____+(____+____)
26.85-3.9-6.1=____〇(____〇____)
二、下面各题怎样简便怎样计算。
9.35+2.4+7.69.79-2.8-2.2
5.98-3.3+3.026.3+0.55+0.45+23.7
2.8+6.8+4.77.05-1.07-3.93
32+5.4+5.2+844.46+0.91+8.09
3.08+8.14+2.921.22+5.4+8.78+4.6
3.6+4.71+0.29+5.47.29+3.17-6.29
一、填一填。
1.4+7.05+8.6=1.4+____+7.05
(1.96+2.45)+5.55=____+(____+____)
48.55-5.7-4.3=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.55+5.3+3.77.13-1.7-3.3
5.02-3.6+3.981.9+0.01+0.99+18.1
5.7+3.2+7.79.27-2.18-4.82
79+1.6+4.8+841.03+1.98+6.02
0.34+6.68+7.663.37+4.3+2.63+5.7
1.2+2.19+4.81+7.86.82+3.24-4.82
一、填一填。
3.3+2.05+6.7=3.3+____+2.05
(1.68+4.99)+1.01=____+(____+____)
47.72-6.3-3.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
6.85+5.6+1.46.83-2.7-2.3
6.37-1.1+3.6314.7+0.17+0.83+9.3
8.3+6.5+1.49.58-0.27-5.73
46+6.2+6.6+232.23+3.67+4.33
4.02+6.45+4.981.76+7.5+8.24+2.5
0.7+4.81+0.19+8.39.37+1.46-6.37
一、填一填。
4.9+6.81+5.1=4.9+____+6.81
(8.87+3.23)+5.77=____+(____+____)
17.94-2.6-7.4=____〇(____〇____)
二、下面各题怎样简便怎样计算。
7.55+1.5+4.56.72-1.5-2.5
5.68-2.5+4.3210.4+0.63+0.37+14.6
6.3+5.7+1.28.59-0.86-3.14
91+7.9+3.8+264.01+4.83+2.17
5.17+7.83+1.831.47+0.2+5.53+9.8
5.7+3.32+2.68+0.39.34+7.63-4.34
一、填一填。
7.7+4.59+2.3=7.7+____+4.59
(7.58+1.42)+4.58=____+(____+____)
39.04-6.4-3.6=____〇(____〇____)
二、下面各题怎样简便怎样计算。
8.58+1.3+5.77.56-1.5-4.5
5.05-3.4+4.959.1+0.68+0.32+16.9
6.4+7.8+1.59.62-2.04-4.96
88+1.3+4.8+321.03+2.96+7.04
5.76+6.05+4.244.29+0.9+1.71+9.1
1.7+2.73+6.27+4.38.89+0.85-5.89
一、填一填。
5.2+8.65+4.8=5.2+____+8.65
(3.82+1.15)+7.85=____+(____+____)
30.93-2.3-7.7=____〇(____〇____)
二、下面各题怎样简便怎样计算。
5.09+2.1+4.98.11-3.1-0.9
5.24-2.7+3.768.9+0.03+0.97+14.1