Unit 48

Tolak Wang

Tolak digunakan untuk mencari perbezaan harga atau wang yang masih tinggal selepas berbelanja.

Langkah 1

Beza atau baki

Tolak digunakan untuk mencari perbezaan harga atau wang yang masih tinggal selepas berbelanja.

wang asal − belanja = baki

Beza atau baki = 差额或余额
减法用在两种情况：比较两样东西差多少钱，或买东西后还剩多少钱。剩下的钱叫 baki，用原有的钱减去花掉的钱。例子：有 RM50，买书用 RM18，RM50 − RM18 = RM32，余额是 RM32。注意：原有的钱要写在前面，不能用小数减大数。

Beza atau baki = difference or balance
Subtraction finds how much more one item costs than another, or how much money is left after shopping. The money left is called baki. Take the money you had and subtract what you spent. Example: you have RM50 and a book costs RM18, so RM50 − RM18 = RM32 is left. Watch out: the starting amount goes first; do not subtract the bigger number from the smaller.

Langkah 2

Kumpul semula wang

Jika sen tidak cukup, tukar RM1 kepada 100 sen sebelum menolak.

RM1 = 100 sen

Kumpul semula wang = 重新组合
减仙时如果上面的仙不够减，就从令吉借 RM1，换成100仙再减，这和减法借位一样。例子：RM5.20 − RM1.60，20 sen 不够减 60 sen，借 RM1 变成 120 sen，120 − 60 = 60，答案是 RM3.60。注意：借了 RM1 后，令吉要少1，别忘了改。

Kumpul semula wang = regroup money
If there are not enough sen on top, take RM1 from the ringgit and change it into 100 sen before subtracting. It works like borrowing in subtraction. Example: RM5.20 − RM1.60: 20 sen is too few, so regroup to 120 sen; 120 − 60 = 60, and the answer is RM3.60. Watch out: after borrowing RM1, the ringgit drop by one.

Langkah 3

Semak dengan tambah

Tambah baki dan jumlah dibelanjakan untuk menyemak. Untuk tolak berturut-turut, contohnya RM50 − RM12 − RM8, tolak satu demi satu: RM38, kemudian RM30.

baki + belanja = wang asal

Semak dengan tambah = 用加法检查
减完后，把余额加上花掉的钱，应该回到原来的钱。如果不相等，就是哪里算错了。例子：RM40 − RM13 = RM27，检查 RM27 + RM13 = RM40，答案正确。注意：检查时要把花掉的钱加回去，再减一次是检查不出错误的。

Semak dengan tambah = check by adding
After subtracting, add the balance and the amount spent. You should get back the money you started with; if not, something went wrong. Example: RM40 − RM13 = RM27, and RM27 + RM13 = RM40, so the answer is right. Watch out: to check, add the spending back on; subtracting a second time proves nothing.

Semak cepat · Soalan 1 / 2

Cuba sendiri

Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.

RM80 − RM35 = __

RM80 − RM35 = 令吉减法
题目要算 RM80 减 RM35。个位0不够减5，要从十位借1：10 − 5 = 5，十位剩7，7 − 3 = 4。算完用加法检查，答案加 RM35 要等于 RM80。例子：RM60 − RM24 = RM36，检查 RM36 + RM24 = RM60。注意：个位是0时最容易忘记借位。

RM80 − RM35 = subtracting ringgit
You need RM80 take away RM35. The ones digit 0 is smaller than 5, so borrow from the tens: 10 − 5 = 5, then 7 − 3 = 4 in the tens. Check by adding your answer to RM35; it should give RM80. Example: RM60 − RM24 = RM36, and RM36 + RM24 = RM60. Watch out: a 0 in the ones place is where borrowing is most often forgotten.

Semak cepat · Soalan 2 / 2

Cuba sendiri

Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.

RM52.70 − RM21.40 = __

RM52.70 − RM21.40 = 带仙的减法
题目是带仙的钱相减。小数点对齐，先减仙：70 − 40 = 30，再减令吉。这题仙够减，不用借位，最后用加法检查。例子：RM46.90 − RM15.30 = RM31.60。注意：令吉的十位和个位都要减，别只减个位。

RM52.70 − RM21.40 = subtracting with sen
Line up the decimal points and subtract the sen first: 70 − 40 = 30. Then subtract the ringgit. No regrouping is needed here because there are enough sen. Finish by adding back to check. Example: RM46.90 − RM15.30 = RM31.60. Watch out: subtract both the tens and the ones of the ringgit, not just the ones.

Ringkasan

Syabas!

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Ingat: beza atau baki; kumpul semula wang; semak dengan tambah.

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