Latihan
Latihan tambahan
2 soalan untuk mengukuhkan unit Akal Pintar. Jika salah, baca petunjuk dan cuba lagi.
Kad: RM3 600, RM900, RM1 500, RM3 000. Dua kad manakah jumlahnya sama dengan RM3 600 + RM900?
找和一样的一对 = cari pasangan
题目给了两张卡的和,要找另外两张卡,加起来一样多。先算出题目那两张卡的和;再看剩下还没用过的卡,把它们加起来比较。找到以后,就能排成“甲加乙减丙等于丁”的算式。
例子:卡片 RM700、RM300、RM400、RM600 → RM700 + RM300 = RM1 000,RM400 + RM600 = RM1 000,一样多。
注意:同一张卡不能用两次,已经在题目里用过的卡不能再选。
find the matching pair = cari pasangan
The question gives the sum of two cards; find the other two cards that make the same amount. First work out the given sum, then add the cards that have not been used yet and compare. Once found, the cards can be arranged as a + b − c = d.
Example: cards RM700, RM300, RM400 and RM600: RM700 + RM300 = RM1 000 and RM400 + RM600 = RM1 000, the same.
Watch out: each card can be used only once, so a card already in the given sum cannot be chosen again.
RM2 800 − RM1 100 + RM650 = ?
从左到右 = dari kiri ke kanan
算式里先减后加。按规则从左边开始:先做减法,得到一个差,再把最后的金额加上去。不可以先算后面的部分,也不可以把三个金额都加起来。
例子:RM1 000 − RM300 + RM50,先得 RM700,再得 RM750。
注意:如果先算后面的“减数和加数”,就把次序弄错了,结果会不一样。
left to right = dari kiri ke kanan
This sentence subtracts and then adds. Start from the left: do the subtraction to get a difference, then add the last amount. Do not work out the end first, and do not add all three amounts.
Example: RM1 000 − RM300 + RM50; first RM700, then RM750.
Watch out: working out the last two amounts first changes the order and gives a different result.
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