objek rujukan = reference object To estimate mass, hold something whose mass you know, such as a 500 g packet of sugar, in one hand and the target in the other. Feel whether the target is double, half or about the same. Example: a bag of flour feels like two packets of sugar, so estimate 500 + 500 = 1000 g, which is 1 kg. Watch out: hold both at the same time, or it is hard to feel the difference.
Langkah 2
Fikir ringan atau berat
Tentukan sama ada objek sasaran lebih ringan, hampir sama atau lebih berat daripada rujukan.
lebih ringan · hampir sama · lebih berat
lebih ringan · hampir sama · lebih berat = 较轻、差不多、较重 拿起东西，先判断它比参照物轻、差不多或重，估计数就跟着比参照小、接近或大。 例子：参照物 500 g，苹果明显较轻，可估 200 g，比参照少 500 - 200 = 300 g。 注意：大的东西不一定重，一袋棉花可能比小铁块轻。
lebih ringan · hampir sama · lebih berat = lighter, about the same, heavier Lift the object and decide if it is lighter, about the same or heavier than the reference; the estimate follows. Example: the reference is 500 g and an apple feels much lighter, so estimate 200 g, which is 500 - 200 = 300 g less. Watch out: big is not always heavy; cotton can be lighter than a small piece of iron.
Langkah 3
Timbang untuk menyemak
Timbang objek selepas menganggar dan bandingkan kedua-dua nilai.
anggaran ↔ timbangan sebenar
timbang untuk menyemak = 称一称来检查 估完以后，用秤称出真正的重量，把估计值和实际值放在一起比较，算出相差多少。 例子：估水壶 600 g，称到 650 g，相差 650 - 600 = 50 g。 注意：比较前单位要一样，600 g 不能直接和 1 kg 里的“1”比大小。
timbang untuk menyemak = weigh to check After estimating, weigh the object to find its real mass. Put the estimate and the real value side by side and work out how far apart they are. Example: estimate a water bottle at 600 g, weigh it at 650 g, and the gap is 650 - 600 = 50 g. Watch out: use the same unit before comparing; 600 g cannot be compared with the 1 in 1 kg.
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Cuba sendiri
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Beg gula rujukan 1 kg. Objek sasaran jauh lebih ringan. Anggaran mungkin…
jauh lebih ringan = 轻很多 题目给的参照是 1 kg 的糖，要估的东西“轻很多”。所以估计值要比 1 kg 小很多。记得 1 kg 等于 1000 g。 例子：参照 1 kg 就是 1000 g，一个橙子约 150 g，比参照轻 1000 - 150 = 850 g。 注意：比参照轻的东西，数字和单位合起来不能比 1 kg 还大。
jauh lebih ringan = much lighter The reference is a 1 kg bag of sugar, and the target is much lighter. So the estimate must be far less than 1 kg. Remember that 1 kg equals 1000 g. Example: 1 kg is 1000 g, and an orange of about 150 g is 1000 - 150 = 850 g lighter. Watch out: something lighter than the reference cannot end up bigger than 1 kg once you read the unit.
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buku serupa = a similar book One book has a mass of 300 g, and the question asks about another book that is serupa, meaning the same kind and size. Also check the unit: mass uses g or kg, never a length unit. Example: one carton of milk is 250 g, so three identical cartons are 250 + 250 + 250 = 750 g. Watch out: the word serupa is the key to the whole question, so understand it first.
Ringkasan
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Ingat: banding dengan objek rujukan; fikir ringan atau berat; timbang untuk menyemak.
