0.75=0.75= ___ :24=24= ___ %.%.

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Worked solution

1. 将小数0.75化为最简分数,并写成比的形式

0.75=75100=34=3:40.75 = \frac{75}{100} = \frac{3}{4} = 3 : 4

2. 根据比的基本性质求出比的前项

已知比的后项是 2424,而 24÷4=624 \div 4 = 6,根据比的基本性质,比的前项和后项同时乘相同的数(00除外),比值不变。因此,比的前项为 3×6=183 \times 6 = 18。即:0.75=18:240.75 = 18 : 24

3. 将小数0.75化为百分数

把 0.750.75 的小数点向右移动两位,同时在后面添上百分号,即:0.75=75%0.75 = 75\%

Answer

18;75

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