内容正文:
第 一 单 元 小数乘法
3
2. 小数乘小数(一)
看谁算得又对又快。
1 1.6×1.5 = 2 1.4×0.8 = 3 3.2×1.04 =
4 4.5×2.2 = 5 1.5×1.5 = 6 2.08×2.2 =
7 2.5×2.6 = 8 6.2×1.2 = 9 5.13×0.7 =
10 1.6×3.2 = 11 4.6×0.3 = 12 1.15×1.5 =
13 5.4×4.4 = 14 1.7×0.6 = 15 2.02×5.5 =
16 4.1×1.4 = 17 7.2×0.5 = 18 8.08×1.2 =
19 6.4×0.8 = 20 0.5×4.8 = 21 2.35×0.3 =
22 1.4×1.2 = 23 4.7×5.3 = 24 7.7×2.25 =
25 1.2×2.5 = 26 3.5×6.6 = 27 5.03×3.1 =
五年级数学上册口 算 天 天 练
4
2. 小数乘小数(二)
看谁算得又对又快。
1 2.7×0.4 = 2 0.75×0.5 = 3 10.5×40 =
4 0.5×1.7 = 5 1.05×0.4 = 6 0.32×0.9 =
7 9.9×0.8 = 8 6.22×0.3 = 9 1.01×8.8 =
10 2.4×2.4 = 11 10.8×0.6 = 12 15.4×0.3 =
13 0.7×0.8 = 14 2.01×1.8 = 15 0.04×2.5 =
16 5.5×3.3 = 17 14.2×3.9 = 18 1.8×1.42 =
19 1.5×0.6 = 20 16.9×0.1 = 21 0.58×0.4 =
22 1.3×1.5 = 23 4.25×0.7 = 24 2.5×2.25 =
25 0.3×2.4 = 26 0.44×0.6 = 27 28.5×0.7 =
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