Latihan
Latihan tambahan
4 soalan untuk mengukuhkan unit Tambah dan Tolak Wang. Jika salah, baca petunjuk dan cuba lagi.
RM 1 245.60 + RM 380.75 − RM 526.30 = ?
| 1 | 2 | 4 | 5 | . | 6 | 0 | |
| + | 3 | 8 | 0 | . | 7 | 5 | |
| ? | ? | ? | ? | ? | ? | ? |
加了再减 = tambah kemudian tolak
第一步:1 245.60 + 380.75,sen 60 + 75 = 135,写 35 进 1,1 + 1 245 + 380 = 1 626,得 RM 1 626.35。第二步:1 626.35 − 526.30,sen 35 − 30 = 05,1 626 − 526 = 1 100,得 RM 1 100.05。
例子:RM 500.50 + RM 20.25 − RM 100 = RM 420.75。
注意:5 sen 要写成 .05,答案是 RM 1 100.05。
add then subtract = tambah kemudian tolak
Step one: 1 245.60 + 380.75, sen 60 + 75 = 135, write 35 and carry 1, then 1 + 1 245 + 380 = 1 626, giving RM 1 626.35. Step two: 1 626.35 − 526.30, sen 35 − 30 = 05 and 1 626 − 526 = 1 100, giving RM 1 100.05.
Example: RM 500.50 + RM 20.25 − RM 100 = RM 420.75.
Watch out: 5 sen is written .05, so the answer is RM 1 100.05.
RM 4 000 − RM 1 875.50 + RM 620.25 = ?
| 4 | 0 | 0 | 0 | . | 0 | 0 | |
| − | 1 | 8 | 7 | 5 | . | 5 | 0 |
| ? | ? | ? | ? | ? | ? | ? |
减了再加 = tolak kemudian tambah
第一步:4 000 看成 3 999 和 100 sen,100 − 50 = 50,3 999 − 1 875 = 2 124,得 RM 2 124.50。第二步:2 124.50 + 620.25,sen 50 + 25 = 75,2 124 + 620 = 2 744,得 RM 2 744.75。
例子:RM 1 000 − RM 400.50 + RM 100 = RM 699.50。
注意:RM 1 504.25 是先把两个数加起来再从 4 000 减,顺序错了。
subtract then add = tolak kemudian tambah
Step one: see 4 000 as 3 999 and 100 sen, 100 − 50 = 50 and 3 999 − 1 875 = 2 124, giving RM 2 124.50. Step two: 2 124.50 + 620.25, sen 50 + 25 = 75 and 2 124 + 620 = 2 744, giving RM 2 744.75.
Example: RM 1 000 − RM 400.50 + RM 100 = RM 699.50.
Watch out: RM 1 504.25 adds the two amounts first and then subtracts from 4 000, which is the wrong order.
RM 320 + ? − RM 150 = RM 400
倒推找方框 = kerja ke belakang
最后减 150 得 400,倒推就加 150:400 + 150 = 550。550 是 320 加方框得来的,所以方框是 550 − 320 = 230。检查:320 + 230 = 550,550 − 150 = 400。
例子:RM 10 + □ − RM 4 = RM 20 → 20 + 4 = 24,24 − 10 = RM 14。
注意:倒推时 150 要加回去,不是再减一次。
working back to the box = kerja ke belakang
The last step subtracted 150 to get 400, so going back we add 150: 400 + 150 = 550. That 550 came from 320 plus the box, so the box is 550 − 320 = 230. Check: 320 + 230 = 550 and 550 − 150 = 400.
Example: RM 10 + □ − RM 4 = RM 20 → 20 + 4 = 24, then 24 − 10 = RM 14.
Watch out: RM 70 uses the wrong sign for the 150 when going back.
Baki buku simpanan Puan Siti ialah RM 2 350.80. Dia menyimpan RM 500, kemudian mengeluarkan RM 1 275.90. Berapakah baki sekarang?
存折的新余额 = baki baharu buku simpanan
存入 500:2 350.80 + 500 = 2 850.80。取出 1 275.90:2 850.80 − 1 275.90,sen 80 不够减 90,借 1 → 180 − 90 = 90,2 849 − 1 275 = 1 574,新余额 RM 1 574.90。
例子:余额 RM 600,存入 RM 100,取出 RM 250.50 → RM 449.50。
注意:RM 574.90 是千位减错了,2 849 − 1 275 是 1 574。
new balance in the savings book = baki baharu buku simpanan
Putting in 500: 2 350.80 + 500 = 2 850.80. Taking out 1 275.90: 2 850.80 − 1 275.90, the 80 sen are less than 90, so borrow 1 → 180 − 90 = 90 and 2 849 − 1 275 = 1 574, so the new balance is RM 1 574.90.
Example: a balance of RM 600, put in RM 100, take out RM 250.50 → RM 449.50.
Watch out: RM 574.90 has the thousands wrong; 2 849 − 1 275 is 1 574.
Tahniah! Kamu telah menyelesaikan latihan.
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