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十分之几 = persepuluh 分母是十，乘十就变成一百，所以分子也乘十，得到的分子就是百分之几。在百格图上，十分之一就是一整行十格。 例子：1/10 = 10/100 = 10%；5/10 = 50/100 = 50%。 注意：只抄分子会让百分比小十倍；分子分母要乘同一个数。

tenths = persepuluh The denominator is 10, and times 10 it becomes 100, so multiply the numerator by 10 too; the new numerator is the percentage. On a hundred grid one tenth is a whole row of ten squares. Example: 1/10 = 10/100 = 10%; 5/10 = 50/100 = 50%. Watch out: copying the numerator makes the percentage ten times too small.

剩下的百分比 = peratus yang lain 全班是整体，整体就是百分之一百。已知一部分的百分比，另一部分就用一百减去它。算好后把两部分加起来检查，要刚好是百分之一百。 例子：21% 喜欢游泳，不喜欢的是 100% − 21% = 79%。 注意：不要把数字的位置调换来当答案；也不要把已知的百分比照抄。

the remaining percentage = peratus yang lain The whole class is 100%. When one part is given, the other part is 100% minus it. Check by adding the two parts; they must make exactly 100%. Example: 21% like swimming, so 100% − 21% = 79% do not. Watch out: do not swap the digits round, and do not copy the percentage that was given.

化简 = permudahkan 百分比写成一百分之几，然后看分子和分母有没有共同的因数（例如 2、5、10），同时除掉，直到不能再约。 例子：92% = 92/100 = 23/25；48% = 48/100 = 12/25。 注意：分子和分母要用同一个数去除；只除其中一个，分数的大小就改变了。

simplify = permudahkan Write the percentage over 100, then look for a common factor of the top and bottom (such as 2, 5 or 10) and divide both until you cannot any more. Example: 92% = 92/100 = 23/25; 48% = 48/100 = 12/25. Watch out: divide the top and the bottom by the same number; dividing only one of them changes the fraction.

二十分之几 = per dua puluh 方法一：分母乘几等于一百，分子也乘几。方法二：分数 × 100%，先把 100 和分母约简。记住二十分之一等于百分之五，会算得很快。 例子：3/20 = 15/100 = 15%；3/20 × 100% = 3 × 5% = 15%。 注意：分子和分母相加没有意义；分子不能照抄。

twentieths = per dua puluh Method 1: find what the denominator times makes 100 and multiply the numerator by it. Method 2: multiply the fraction by 100%, simplifying 100 with the denominator first. Knowing that 1/20 = 5% makes this quick. Example: 3/20 = 15/100 = 15%, or 3/20 × 100% = 3 × 5% = 15%. Watch out: adding the numerator and denominator means nothing, and do not copy the numerator.

先化再加 = tukar dahulu, kemudian tambah 两种作物各占土地的几分之几，先把每个分数化成百分比，再把两个百分比相加，就是两种作物一共占的百分比。 例子：1/2 种花、1/4 种菜 → 50% + 25% = 75%。 注意：题目问的是“种了两种作物的部分”，不是没种的部分；分子直接相加也不对。

change first, then add = tukar dahulu, kemudian tambah Each crop takes a fraction of the land. Change each fraction into a percentage, then add the two percentages to find how much the two crops take together. Example: 1/2 flowers and 1/4 vegetables: 50% + 25% = 75%. Watch out: the question asks about the planted part, not the rest, and adding the numerators is wrong.