Kenal Milimeter dan Kilometer

毫米 = milimeter 毫米的符号是 mm。它是很小的长度单位，尺子上最小的一格就是 1 mm。量很小或很短的东西时用毫米，例如蚂蚁的长度、纽扣的宽度、书的厚度。量的时候，东西的一端对准 0 mm，另一端的读数就是长度。 例子：一颗米粒长约 6 mm。 注意：尺子上标着数字的长线，每两条之间有 10 小格。

millimetre = milimeter The symbol for millimetre is mm. It is a very small unit; the smallest space on a ruler is 1 mm. Use millimetres for small or short things such as the length of an ant, the width of a button or the thickness of a book. Put one end on 0 mm and read the other end. Example: a grain of rice is about 6 mm long. Watch out: there are 10 small spaces between two numbered long lines on the ruler.

千米 = kilometer 千米的符号是 km。一千米有一千米那么长，也就是 1 km 等于 1 000 m。图上每一段是 200 m，走了五段，一共走了 1 000 m，就是 1 km。走路大约要十几分钟才走完 1 km。 例子：学校跑道一圈 400 m，跑两圈半就是 1 km。 注意：1 km 不是 100 m，也不是 10 m。

kilometre = kilometer The symbol for kilometre is km. One kilometre is one thousand metres: 1 km = 1 000 m. In the picture each part is 200 m; five parts make 1 000 m, which is 1 km. Walking 1 km takes more than ten minutes. Example: a school track of 400 m run two and a half times makes 1 km. Watch out: 1 km is not 100 m and not 10 m.

远距离用千米 = jarak jauh dalam km 两个地方之间的距离往往很远，用米来说数字会很大，所以用千米。法里斯家到植物园的距离是 14 km。其他例子：两个镇之间的距离、一条河的长度、火车路线的长度。 例子：一场马拉松大约跑 42 km。 注意：房间、课桌这些东西的长度不用千米。

long distances in km = jarak jauh dalam km The distance between two places is often long; in metres the number would be very big, so we use kilometres. Faris's house is 14 km from the Botanical Garden. Other examples: the distance between two towns, the length of a river, the length of a railway line. Example: a marathon is about 42 km. Watch out: rooms and desks are not measured in kilometres.

用符号写长度 = tulis ukuran dengan simbol 写长度时，先写数字，再空一格写单位符号。符号要用小写字母：毫米写 mm，千米写 km。小知识：10 cm 等于 1 分米（desimeter，dm）；10 m 等于 1 十米（dekameter，dam），这两个单位比较少用。 例子：十九毫米写成 19 mm；一百二十千米写成 120 km。 注意：不要把 mm 写成 m，那是米，长度差很多。

writing lengths with symbols = tulis ukuran dengan simbol Write the number first, then a space and the unit symbol in small letters: millimetre is mm and kilometre is km. Quick fact: 10 cm make 1 decimetre (dm), and 10 m make 1 dekametre (dam); these two units are seldom used. Example: nineteen millimetres is written 19 mm; one hundred and twenty kilometres is 120 km. Watch out: do not write mm as m, which is metres, a much bigger length.

选单位 = pilih unit 第一步，在脑中想象要量的东西，估一估它大约多长。第二步，把每个单位平常量什么想一遍：毫米量指甲那么小的东西，厘米量铅笔、书本，米量教室、操场，千米量城镇之间的路程。最后把单位配上一个合理的数字，看看哪一个说得通。 例子：量一支新铅笔的长度，用厘米最合适，大约 18 厘米。 注意：单位配得不对，数字会大得离谱或小得离谱。

choosing a unit = pilih unit First, picture the thing in your mind and estimate roughly how long it is. Second, run through what each unit is normally used for: millimetres for things as small as a fingernail, centimetres for pencils and books, metres for classrooms and fields, kilometres for roads between towns. Then pair each unit with a sensible number and see which one makes sense. Example: a new pencil is best measured in centimetres, about 18 centimetres. Watch out: with the wrong unit, the number becomes silly, far too big or far too small.

两地距离 = jarak antara dua tempat 先想象这段路：从一个城镇到另一个城镇，要走多久、坐车要多久？再想每个单位平常量的是什么东西，哪一个单位配上一个合理的数字，最能说明这段路的长短。 例子：学校礼堂的长度用米来量最合适，大约 30 米。 注意：单位越短，同一段长度写出来的数字就越大。

distance between places = jarak antara dua tempat Picture this journey first: how long would it take to walk or drive from one town to the other? Then think about what each unit is normally used for, and which unit with a sensible number best describes the length of the road. Example: the length of a school hall is best given in metres, about 30 metres. Watch out: the shorter the unit, the bigger the number for the same length.

选出用千米量的 = pilih yang diukur dalam km 逐一看每一项：如果要走很久、坐车很久才能走完，就适合用千米；如果能拿在手上或放在桌上，就太短了，不能用千米。可能不止一项正确，全部选好再按 Semak。 例子：一座岛绕一圈的路程适合用千米；一片树叶的长度就不适合。 注意：选了一项以后，还要把每一项都检查一遍。

choose what is measured in km = pilih yang diukur dalam km Look at each item. If it takes a long walk or a long drive to cover, kilometres suit it; if you can hold it in your hand or put it on a desk, it is far too short for kilometres. More than one item may be correct; choose them all, then press Semak. Example: the road around an island suits kilometres; the length of a leaf does not. Watch out: after choosing one, check every other item too.