Unit 21
Aktif Minda
Kod Rahsia
Jawab setiap kad soalan. Setiap jawapan betul membuka satu huruf.
Susun huruf-huruf itu untuk mendapatkan kata kunci!
密码游戏 = kod rahsia
一共有七张题目卡，内容是时间的加、减、乘、除和单位换算。每答对一题，就会打开一个字母，字母会自动填进上面的密码格。七题都答对，就能读出一个马来文的关键词。
例子：答对 H 题，密码格里所有 H 的位置都会出现字母。
注意：答错会有提示，想一想再试。
secret code = kod rahsia
There are seven question cards on adding, subtracting, multiplying and dividing time and changing units. Each correct answer opens a letter, which fills the code boxes above. Answer all seven to read a Malay keyword.
Example: answering the H card fills every H box in the code.
Watch out: a wrong answer shows a hint; think and try again.
Permainan
Kod Rahsia
??????????
Tekan satu kad.
玩法 = cara bermain
可以按任何次序点题目卡。每张卡是一道时间计算题，有三个选项。答对了，那张卡的字母会填进所有相同字母的格子；答错就看提示再选。七张卡都答对，密码格就会拼出关键词。
例子：如果题目是 5 小时 30 分钟 ÷ 3，先除小时得 1 小时余 2 小时，2 小时换成 120 分钟，加 30 分钟得 150 分钟，再除以 3 得 50 分钟，答案 1 小时 50 分钟。
注意：可以先在纸上写竖式再作答。
how to play = cara bermain
Tap the cards in any order. Each card is a time calculation with three choices. A correct answer fills every box with that card's letter; a wrong one shows a hint so you can choose again. Answer all seven to spell the keyword.
Example: for 5 h 30 min ÷ 3, divide the hours to get 1 hour remainder 2 hours; 2 hours = 120 minutes, + 30 = 150 minutes, ÷ 3 = 50 minutes, so 1 h 50 min.
Watch out: you may work in columns on paper first.
Ringkasan