Akal Pintar

用相同分母想 = fikir dengan penyebut sama 先把二分之一换成六分之三。选一个比它大的第一个数，例如六分之五。六分之五比六分之三多出六分之二，只要把这六分之二分成两个数来减，例如六分之一和六分之一，就得到一组答案。 例子：换成十分之几：1/2 = 5/10，7/10 − 1/10 − 1/10 = 5/10。 注意：减去的两个数加起来，要等于第一个数比二分之一多出的部分。

think with the same denominator = fikir dengan penyebut sama Change one half into 3/6. Choose a first number bigger than it, such as 5/6. 5/6 is 2/6 more than 3/6, so split that 2/6 into two numbers to take away, such as 1/6 and 1/6, and you have an answer. Example: with tenths, 1/2 = 5/10, and 7/10 − 1/10 − 1/10 = 5/10. Watch out: the two numbers taken away must add up to how much the first number is above one half.

逐个检查 = semak satu demi satu 每一个选项都要自己算一次：先找出这组分数的公分母，把 1/2 也换成同样的分母；再把分子从左到右连减，看看剩下的份数是不是正好等于二分之一的份数。 例子：1 − 1/8 − 3/8 = 8/8 − 1/8 − 3/8 = 4/8 = 1/2，这一组可以。 注意：不能只看开头的数大不大，被减去的两个数加起来也要刚好合适。

check one by one = semak satu demi satu Work out every choice yourself. Find a common denominator for the fractions in that choice and write 1/2 with it too. Then subtract the numerators from left to right and see whether exactly one half is left. Example: 1 − 1/8 − 3/8 = 8/8 − 1/8 − 3/8 = 4/8 = 1/2, so this set works. Watch out: a big starting number is not enough; the two numbers taken away must add up to the right amount.