内容正文:
第 一 单 元 小数乘法
1
第一单元 小数乘法
1. 小数乘整数(一)
看谁算得又对又快。
1 2.3×3 = 2 5.6×2 = 3 3.4×3 =
4 1.5×3 = 5 7.5×4 = 6 6.2×3 =
7 4.6×2 = 8 8.2×4 = 9 3.7×3 =
10 0.2×2 = 11 4.4×3 = 12 2.5×5 =
13 5.4×3 = 14 6.2×7 = 15 1.8×6 =
16 3.6×8 = 17 4.5×5 = 18 2.5×8 =
19 2.2×3 = 20 6.6×2 = 21 0.2×8 =
22 4.6×4 = 23 7.2×5 = 24 6.8×5 =
五年级数学上册口 算 天 天 练
2
1. 小数乘整数(二)
看谁算得又对又快。
1 4.2×2 = 2 6.1×3 = 3 2.5×4 =
4 0.8×4 = 5 5.3×3 = 6 5.2×2 =
7 0.21×3 = 8 0.7×2 = 9 4.4×2 =
10 1.2×7 = 11 1.5×6 = 12 3.2×3 =
13 0.36×8 = 14 6.3×3 = 15 1.1×9 =
16 0.16×2 = 17 0.8×5 = 18 0.5×6 =
19 2.4×6 = 20 4.1×3 = 21 9.1×2 =
22 7.2×4 = 23 1.3×5 = 24 1.6×5 =
25 0.24×3 = 26 3.6×7 = 27 4.5×3 =
舍考省泰
参考答案
第一单元
小数乘法
3.积的近似数(一)
1.小数乘整数(一)
①6.0
②43.7
③1.7
①6.9
②11.2
③10.2
④1.1
⑤1.5
⑥7.4
④4.5
⑤30
⑥18.6
⑦3.9
⑧1.3
⑨0.1
⑦9.2
⑧32.8
⑨11.1
03.4
1117.0
120.1
00.4
①13.2
②12.5
134.3
①④1.6
1⑤27.6
③16.2
④43.4
⑤10.8
63.9
⑦0.7
①80.3
1628.8
⑦22.5
1820
194.6
201.2
②①9.4
196.6
②013.2
②①1.6
②1.5
②2.6
②40.1
218.4
②336
②434
②50.8
②60.9
270.5
1.小数乘整数(二)
3.积的近似数(二)
①8.4
②18.3
③10
①163.21
②4.03
③0.02
④3.2
⑤15.9
⑥10.4
④0.83
⑤8.19
⑥0.02
⑦0.63
⑧1.4
⑨8.8
⑦14.78
⑧0.37
⑨0.43
08.4
①9
②9.6
00.08
①24.65
1②0.70
③2.88
1④18.9
59.9
1③0.67
1④2.46
1⑤0.32
160.32
1⑦4
1⑧3
(160.11
1⑦1.61
1810.21
914.4
012.3
②④18.2
190.25
②00.01
②①1.28
228.8
86.5
2④8
②20.46
⑧7.84
240.07
250.72
2625.2
②m13.5
250.06
②611.50
200.29
2.小数乘小数(一)
4.整数乘法运算定律推广到小数(一)
①2.4
②1.12
③3.328
①2.1
②4.2
④9.9
⑤2.25
⑥4.576
③2.30.25
⑦6.5
⑧7.44
⑨3.591
④25.640.510.4或10.440.525.6
05.12
①1.38
②1.725
⑤2.83.085.39
③23.76
1④1.02
⑤11.11
⑥60.056.43.6
165.74
⑦3.6
1⑧9.696
⑦1002.510060.5
95.12
202.4
②0.705
⑧101.2506.250
②21.68
②324.91
②417.325
⑨9.6575.89.652.47
253
②623.1
2⑦15.593
4.整数乘法