Latihan tambahan

按大小选单位 = pilih unit mengikut saiz 先想象这粒米放在你面前，估一估它有多长。再逐一想每个单位平常量什么：有的量路程，有的量房间，有的量很细小的东西。选一个配上合理数字的单位。 例子：一本练习簿的宽度用厘米来量，大约 17 厘米。 注意：先估计大小，再选单位，不要只看单位的名字。

choosing a unit by size = pilih unit mengikut saiz Imagine the grain of rice in front of you and estimate how long it is. Then think through what each unit is normally used for: some measure journeys, some measure rooms, some measure tiny things. Choose the unit that goes with a sensible number. Example: the width of an exercise book is measured in centimetres, about 17 centimetres. Watch out: estimate the size first, then choose the unit; do not go by the unit's name alone.

城市之间的距离 = jarak antara bandar 先想象从山打根坐巴士到斗湖要多久，这段路有多长。再把每个单位平常量的东西想一遍，看看哪一个单位配上合理的数字，最适合描述这段路。 例子：教室的长度用米来量，大约 9 米。 注意：单位选得不对，数字会变得非常大，难以读出。

distance between cities = jarak antara bandar Imagine the bus journey from Sandakan to Tawau: how long does it take and how long is the road? Then think through what each unit is normally used for, and which unit with a sensible number best describes this road. Example: the length of a classroom is measured in metres, about 9 metres. Watch out: with an unsuitable unit, the number becomes huge and hard to read.

写成符号 = tulis dengan simbol 先把读法变成数字：几十在前，几个在后。然后空一格，写上单位的符号。千米的符号是两个小写字母，开头的字母是 k。 例子：五十八千米写成 58 km。 注意：数字的两位不要写反，也不要写成毫米的符号。

writing with a symbol = tulis dengan simbol Turn the words into a number first: the tens come before the ones. Then leave a space and write the unit symbol. The kilometre symbol is two small letters beginning with k. Example: fifty-eight kilometres is written 58 km. Watch out: do not swap the two digits, and do not write the millimetre symbol.

合理的量度 = ukuran yang munasabah 先想象这个东西有多大，再看哪种单位配上这个数字最接近真实。12 个小格那么宽，还是 12 段很长的路？拿自己的手指比一比。 例子：一块橡皮擦的厚度大约是 9 毫米，这是合理的。 注意：数字一样，单位不同，长度就差非常多。

a sensible measurement = ukuran yang munasabah Imagine how big the thing is, then see which unit with this number is closest to real life. Is it twelve tiny spaces wide, or twelve long roads? Compare with your own finger. Example: an eraser about 9 millimetres thick is sensible. Watch out: with the same number, a different unit gives a hugely different length.

估计距离 = anggar jarak 从家里去附近的小镇，通常要坐车或骑脚踏车。想一想：这段路比教室长很多很多，所以要用表示远距离的单位，配上这个数字才合理。 例子：从家到学校骑脚踏车约 3 千米，是合理的。 注意：很短的单位配上小数字，只有指甲那么长。

estimating distance = anggar jarak Going from home to a nearby town usually means riding a car or a bicycle. That road is far, far longer than a classroom, so it needs the unit for long distances to make this number sensible. Example: cycling about 3 kilometres from home to school is sensible. Watch out: a very short unit with a small number is only as long as a fingernail.

写毫米的符号 = tulis simbol milimeter 先把读法写成数字：“十几”的数，十位是 1，个位是后面那个数。然后空一格写单位符号。毫米的符号是两个相同的小写字母。 例子：二十六毫米写成 26 mm。 注意：毫米和千米的符号只差一个字母，要看清楚。

writing the millimetre symbol = tulis simbol milimeter Turn the words into a number first: in the teens the tens digit is 1 and the ones digit comes after it. Then leave a space and write the unit symbol. The millimetre symbol is two identical small letters. Example: twenty-six millimetres is written 26 mm. Watch out: the millimetre and kilometre symbols differ by only one letter, so look carefully.