Page 47 - Hybrid PBD Matematik TG3_Edisi Guru

Matematik Tingkatan 3 Bab 2
11. Rajah di bawah menunjukkan tiga keping kad. C
The diagram below shows three cards. Bahagian
0.025 terabait 36 gigabait 12. (a) Lengkapkan pernyataan di ruang jawapan
0.025 terabyte 36 gigabytes
dengan mengisi petak kosong dengan
nombor dalam bentuk piawai yang sesuai.
3 850 megabait Complete the statement in the answer space by filling the
3 850 megabytes boxes with suitable numbers in standard form.
[2 markah / 2 marks]
(a) Susunkan semua nilai itu dalam tertib Jawapan/ Answer:
menaik. Saiz diameter bagi virus adalah dalam julat
Arrange all the values in ascending order.
[3 markah / 3 marks]
Jawapan/ Answer: 20 nanometer atau 2 × 10 –8 meter hingga

3 850 0.025 36 400 nanometer atau 4 × 10 –7 meter.
megabait , terabait , gigabait The size of diameter of a virus is in the range of 20
megabytes terabytes gigabytes
nanometres or 2 × 10 –8 metres to 400 nanometres or

0.025 terabait / terabyte 4 × 10 7 metres.
12
= 0.025 × 10 bait / bytes
= 2.5 × 10 bait / bytes 20 nm = 20 × 10 m = 2 × 10 m
10
–8
–9
36 gigabait / gigabytes 400 nm = 400 × 10 m = 4 × 10 m
–7
–9
= 36 × 10 bait / bytes
9
= 3.6 × 10 bait / bytes
10
3 850 megabait / megabytes
= 3 850 × 10 bait / bytes
6
= 3.85 × 10 bait / bytes (b) Hitung setiap yang berikut. Beri jawapan
9
dalam bentuk piawai. Tunjukkan langkah
kerja anda.
Calculate each of the following. Give the answer in
standard form. Show your working steps.
(i) 3.42 × 10 + 4.5 × 10
4
3
[2 markah / 2 marks]
(b) Bundarkan nilai yang terbesar, dalam bait, (ii) 2.5 × 10 3 7
betul kepada satu angka bererti. Beri 4 × 10 [2 markah / 2 marks]
jawapan dalam bentuk piawai.
Round off the largest value, in bytes, correct to one Jawapan/ Answer:
significant figure. Give the answer in standard form. (i) 3.42 × 10 + 4.5 × 10
4
3
[1 markah / 1 mark] = 3.42 × 10 + 0.45 × 10
4
4
Jawapan/ Answer: = (3.42 + 0.45) × 10
4
36 gigabait / gigabytes = 3.87 × 10
4
10
= 3.6 × 10 bait / bytes
= 4 × 10 bait / bytes (1 a.b. / 1 s.f.) (ii) 2.5 × 10 7
10
4 × 10 3
= 2.5 × 10 7
4 10 3
= 0.625 × 10 7 – 3
= 0.625 × 10
4
= 6.25 × 10
3

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