Akal Pintar

首位 = digit pertama；最大 = paling besar 五位数的第一位就是万位（puluh ribu）。条件说首位要放最大的数字，所以先把五张卡比一比，找出最大的那一张放在最左边。其余四张留给后面的数位。 例子：卡片 4、1、6、3、0 中最大的是 6，所以首位放 6。 注意：首位不能放 0，否则就不是五位数了。

first digit = digit pertama; largest = paling besar The first digit of a five-digit number is in the ten thousands place (puluh ribu). The rule says it must be the largest digit, so compare all five cards and put the biggest one on the far left. The other four cards are kept for the remaining places. Example: among 4, 1, 6, 3 and 0, the largest is 6, so 6 goes first. Watch out: 0 can never be the first digit, or the number would not have five digits.

能被 2 整除 = boleh dibahagi dengan 2 最后一位是个位（sa）。能被 2 整除、没有余数的数字是 0、2、4、6、8，也就是偶数。剩下的四张卡里只有 2 和 4 符合，所以个位只能放 2 或 4，两种都可以。 例子：剩下 1、3、8、5 时，只有 8 能被 2 整除，个位就一定是 8。 注意：5 和 7 除以 2 都会余 1，不能放在个位。

can be divided by 2 = boleh dibahagi dengan 2 The last digit is in the ones place (sa). The digits that can be divided by 2 with no remainder are 0, 2, 4, 6 and 8, the even digits. Of the four cards left, only 2 and 4 work, so the ones digit can be either of them. Example: if 1, 3, 8 and 5 are left, only 8 divides by 2, so 8 must go last. Watch out: 5 and 7 leave a remainder of 1 when divided by 2, so they cannot go last.

排中间三位 = susun digit di tengah 首位和末位定好以后，剩下的三张卡放在千位、百位和十位。三张卡可以有好几种排法，每一种都是符合条件的答案。排好以后，还要用马来文把数读出来、写出来。 例子：首位 8、末位 6，中间用 1、3、5，可以排成 81 356 或 85 316。 注意：写好后再检查一次：五张卡都用上了吗？有没有重复？

arrange the middle digits = susun digit di tengah Once the first and last digits are fixed, the three cards left go in the thousands, hundreds and tens places. They can be arranged in several ways, and each one is a correct answer. Then read and write each number in Malay. Example: with 8 first and 6 last and 1, 3, 5 in the middle, you can make 81 356 or 85 316. Watch out: check again that all five cards are used and none is repeated.

检查条件 = semak syarat 三个选项都用同一组五张卡，要找出同时符合两个条件的数。做法是一个条件一个条件地检查：先看首位是不是卡片里最大的数字；再看个位能不能被 2 整除。只要有一个条件不符合，就可以划掉。 例子：卡片 6、1、8、3、4，数 83 164 首位 8 最大、个位 4 是偶数，两个条件都符合。 注意：两个条件都要检查，只看首位或只看个位都容易选错。

check the conditions = semak syarat All three options use the same five cards. Check the two rules one at a time: is the first digit the largest card, and can the last digit be divided by 2? If either rule fails, cross the option out. Example: with cards 6, 1, 8, 3, 4, the number 83 164 starts with the largest digit 8 and ends with the even digit 4, so both rules hold. Watch out: check both rules; looking at only the first or only the last digit easily leads to a wrong choice.

最大的数 = nombor paling besar 用五张卡排出符合条件的最大数。先把有条件的数位定下来：首位放最大的数字，个位放偶数。卡片里如果有两个偶数，想一想：把哪一个留在个位，才能让前面的数位更大？剩下的卡从大到小排在中间。 例子：卡片 8、3、6、1、2 → 首位 8，个位留较小的偶数 2，中间 6、3、1 → 86 312。 注意：大的数字应该放在高的数位；个位只要求是偶数，不需要是最大的偶数。

largest number = nombor paling besar Use the five cards to make the largest number that follows both rules. Fix the places with rules first: the largest digit goes first and an even digit goes last. If there are two even cards, decide which one to keep for the ones place so that the earlier places stay as big as possible. Put the rest from largest to smallest. Example: cards 8, 3, 6, 1, 2 give 86 312. Watch out: big digits belong in high places; the ones digit only has to be even, not the biggest even digit.

读出答案 = sebut jawapan 排好数以后还要会读。先把前两位读成“几十几 ribu”，再把后三位读成一个普通的三位数，两段接起来。拿每个选项和自己的读法逐段比较。 例子：95 274 = sembilan puluh lima ribu dua ratus tujuh puluh empat。 注意：五位数的读法一定有“几十几 ribu”；后三位的百位、十位、个位要一个不漏地读出来。

say the answer = sebut jawapan After making a number you must be able to read it. Say the first two digits as a number of thousands, then read the last three digits as a three-digit number and join them. Compare each option with your own reading part by part. Example: 95 274 = sembilan puluh lima ribu dua ratus tujuh puluh empat. Watch out: a five-digit name always has tens of thousands, and all three of the last digits must be read.