Latihan tambahan

约到百 = ratus terdekat 约到百要看十位。结果仍然是 3 400，表示百位没有加 1，所以十位只能是 0 到 4。 例子：5 2?1 约到百是 5 200 → 十位是 0–4。 注意：选项里只有一个符合。

nearest hundred = ratus terdekat Rounding to the hundred looks at the tens digit. The result is still 3 400, so the hundreds did not go up, and the tens digit must be 0 to 4. Example: 5 2?1 rounding to 5 200 → the tens digit is 0 to 4. Watch out: only one option fits.

千位加 1 = ribu bertambah 原本千位是 1，约到千变成 2 000，表示千位加了 1，所以百位要是 5 到 9。 例子：4 ?30 约成 5 000 → 百位 5–9。 注意：看清楚结果比原来的千位大还是一样。

thousands go up = ribu bertambah The thousands digit starts as 1 and the rounded number is 2 000, so it went up by 1. The hundreds digit must be 5 to 9. Example: 4 ?30 rounding to 5 000 → the hundreds digit is 5 to 9. Watch out: check whether the rounded thousands is the same as or bigger than the original.

不可能 = tidak mungkin 把每个选项约到千，看看哪一个不会变成 5 000。 例子：8 460 → 8 000；8 640 → 9 000。 注意：题目找的是“不可能”的那一个。

not possible = tidak mungkin Round each option to the nearest thousand and find the one that does not become 5 000. Example: 8 460 → 8 000; 8 640 → 9 000. Watch out: the question asks for the one that is NOT possible.