Akal Pintar

看十位再计算 = lihat digit puluh 四个价钱的个位都是零，所以看最后两位：拨款的最后两位是八十。把三个价钱的最后两位加起来，只有八十、六十、四十相加得一百八十，最后两位是八十，符合。再用竖式把显微镜、骨骼模型和机器人套件三个价钱加起来，刚好三千七百八十令吉。 例子：选 RM150、RM220、RM310 → 最后两位 50 + 20 + 10 = 80。 注意：最后两位符合还不够，要算出总数确认。

look at the tens, then calculate = lihat digit puluh All the ones digits are 0, so look at the last two digits: the allocation ends in 80. Only 80 + 60 + 40 = 180 ends in 80. Then add the microscope, skeleton model and robotics set in columns: exactly RM3 780. Example: choosing RM150, RM220 and RM310, the last two digits give 50 + 20 + 10 = 80. Watch out: matching last digits is not enough; work out the total to confirm.

选出三个 = pilih tiga 这一题要亲手选出三样器材。先看最后两位数字，找出加起来最后两位符合拨款的组合；选好以后，把三个价钱用竖式加起来，看看是不是刚好等于拨款。如果不相等，就换掉其中一样再试；四种选法里只有一种合适。 例子：拨款 RM6 000，价钱 RM2 150、RM1 370、RM1 990、RM2 480；看最后两位 50 + 70 + 80 = 200，选 RM2 150、RM1 370、RM2 480，加起来刚好 RM6 000。 注意：一定要刚好选三个，选两个或四个都不符合题目要求。

choose three = pilih tiga Here you pick the three items yourself. Look at the last two digits first to find a group whose last digits fit the allocation; then add the three prices in columns and compare the total with the allocation. If it does not match, swap one item and try again; only one of the four choices works. Example: allocation RM6 000, prices RM2 150, RM1 370, RM1 990 and RM2 480; the last two digits 50 + 70 + 80 = 200, so RM2 150 + RM1 370 + RM2 480 = RM6 000. Watch out: choose exactly three; two or four items do not fit the question.