如题所述
十道小数乘分数的计算题如下:
5 x 4/5
6 x 1/9
7 x 1/5
8 x 2/7
9 x 2/5
10 x 1/2
11 x 3/5
12 x 5/7
13 x 8/9
14 x 1/8
15 x 5/9
对应答案如下:
4
0.6
1.4
2.4
3.6
5
6.6
8.4
11.7
1.68
8.1
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第1个回答 2018-01-29
(1)0.21×1/2=0.21×0.5=0.105;
(2)0.32×3/5=32/100×3/5=8/25×3/5=24/125;
(3)0.24×2/3=0.48/3=48/300=16/100=4/25;
(4)0.24×2/3=0.08×2/1=0.16;
(5)0.5×1/2=0.5×0.5=0.25;
(6)0.2×1/5=1/5×1/5=1/25;
(7)0.2×5/49=1/5× 5/49=1/49;
(8) 3/14×2/3×0.5=2/14×1/2=1/14;
(9)8/7×21/16 ×0.25=3/2×1/4=3/8;
(10)3/4 × 8/9×0.4=2/3×4/10=4/15.