Latihan tambahan

数份数 = kira bahagian 每块是五分之一，块数就是分子，所以先写成“几分之五”。接着每五块拼成一个整数，看可以拼出几个整数，剩下的块数就是分数部分。 例子：14 块 1/5 → 14/5 → 两个整数用掉 10 块，剩 4 块 → 2又4/5。 注意：分子是块数、分母是每块的大小，两个数不要写反；整数和分数部分也不要对调。

count the parts = kira bahagian Each piece is one fifth, so the number of pieces is the numerator: write it over 5 first. Then every 5 pieces make a whole; count the wholes you can make and the pieces left give the fraction part. Example: 14 pieces of 1/5 make 14/5; two wholes use 10 pieces and 4 are left, so 2 4/5. Watch out: the numerator is the number of pieces and the denominator is the piece size; do not swap them.

反过来数 = kira terbalik 这次是从带分数找块数。每个整数 1 里有 3 块三分之一，先算出整数部分共有几块，再加上分数部分的块数；这个块数就是假分数的分子。 例子：3又1/4 → 3 × 4 = 12，12 + 1 = 13 → 里面有 13 块 1/4。 注意：只算整数部分会漏掉分数部分的几块，只数分子又会漏掉整数里的块。

count backwards = kira terbalik This time we start from a mixed number and find the number of pieces. Each whole holds 3 thirds, so count the pieces in the wholes, then add the pieces in the fraction part. That total is the numerator of the improper fraction. Example: 3 1/4: 3 × 4 = 12 and 12 + 1 = 13, so it has 13 quarter pieces. Watch out: do not count only the wholes or only the numerator.

刚好两个 = tepat dua 每一组都先想：这种大小的块，几块拼成一个完整的蛋糕？两个蛋糕就要两倍的块数。再把每组的块数和这个数比较，多了或少了都不是刚好两个。 例子：4 块 1/2 刚好是 2 个；7 块 1/3 = 2又1/3，比 2 多。 注意：块数多不一定就是答案，要看每块有多大。

exactly two = tepat dua For each set, ask how many pieces of that size make one whole cake. Two cakes need twice as many pieces. Compare each set with that number: too many or too few is not exactly two. Example: 4 pieces of 1/2 make exactly 2, but 7 pieces of 1/3 make 2 1/3, which is more than 2. Watch out: more pieces does not always mean more cake, because the piece size matters.