Page 38 - Hybrid PBD Matematik TG3_Edisi Guru

Matematik Tingkatan 3 Bab 2
BAB

2 Bentuk Piawai

Standard Form

PBD
PBD
PBD 2.1 Angka Bererti Buku Teks
Significant Figures ms. 32 – 36
1. Rajah di sebelah menunjukkan pengukuran panjang rod dengan pembaris meter.
The diagram shows the measurement of the length of a rod using a metre rule. SP 2.1.1 TP1
(a) Ukuran panjang rod itu ialah 23.5 cm.
The measurement of the rod is 23.5 cm.
(b) Tulis semula bacaan anda di (a) dan bulatkan digit yang tidak pasti.
Rewrite your reading in (a) and circle the digit that is uncertain.
23. 5 10
(c) Kejituan pengukuran panjang itu ialah 3 angka bererti. 10 20 30
The precision of the measurement is 3 significant figures.
(d) Angka bererti satu nombor ialah digit-digit yang menunjukkan tahap kejituan tertentu.
Significant figures of a number are the digits that express a specified degree of accuracy .

FOKUS TOPIK

Integer Perpuluhan
Integer Decimal
30 800 Angka bererti Angka bererti
mengikut tahap Significant figure
Angka bererti kejituan yang INFO
Significant figure dikehendaki. 0.0120800 Peraturan bagi menentukan
Significant figure angka bererti
depending on level of
accuracy required. Rules for determining significant
Bukan angka bererti Angka bererti figures
Not significant figure Significant figure

2. Nyatakan bilangan angka bererti bagi nombor-nombor berikut. SP 2.1.1 TP2
State the number of significant figures of the following numbers.
(a) 1 129 (b) 72.4 (c) 27.86 (d) 402
35 4 angka bererti 3 angka bererti 4 angka bererti 3 angka bererti
2 angka bererti 4 significant figures 3 significant figures 4 significant figures 3 significant figures
2 significant figures
(e) 3 006 (f) 20 004 (g) 5 107 (h) 300 (i) 50
4 angka bererti 5 angka bererti 4 angka bererti 1 angka bererti 1 angka bererti
4 significant figures 5 significant figures 4 significant figures 1 significant figure 1 significant figure

(j) 7 200 (k) 112 240 (l) 0.007 (m) 0.0302 (n) 0.00083
2 angka bererti 5 angka bererti 1 angka bererti 3 angka bererti 2 angka bererti
2 significant figures 5 significant figures 1 significant figure 3 significant figures 2 significant figures
(o) 0.00516 (p) 1.00 (q) 23.000 (r) 0.60 (s) 7.1400

3 angka bererti 3 angka bererti 5 angka bererti 2 angka bererti 5 angka bererti
3 significant figures 3 significant figures 5 significant figures 2 significant figures 5 significant figures

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02_ Hybrid Mate Tg3.indd 14 20/08/2021 5:28 PM