Page 59 - Hybrid PBD 2021 Form 1 - Matematik

Matematik Tingkatan 1 Bab 3
4. Tentukan sama ada setiap nombor yang berikut ialah kuasa dua sempurna atau bukan dengan melengkapkan
kaedah pemfaktoran perdana. SP 3.1.2 TP2
Determine whether each of the following numbers is a perfect square or not by completing the prime factorisation method.

(a) (b)
196 250 225

7 28 5 50 5 45

7 4 2 25 5 9

2 2 5 5 3 3

196 = 7 × 7 × 2 × 2 250 = 5 × 2 × 5 × 5 225 = 5 × 5 × 3 × 3
196 ialah kuasa dua sempurna. 250 bukan kuasa dua sempurna. 225 ialah kuasa dua sempurna.
196 is a perfect square. 250 is not a perfect square. 225 is a perfect square.

5. Senaraikan kuasa dua sempurna yang berikut. SP 3.1.2 TP2
List the following perfect squares.

(a) Antara 40 dengan 90. (b) Antara 130 dengan 180.
Antara 99 dengan 199. Between 40 and 90. Between 130 and 180.
Between 99 and 199.
100, 121, 144, 169, 196 49, 64, 81 144, 169

6. Selesaikan. SP 3.1.3 TP2
Solve.

2
(a) Diberi 21 = 441, cari . (b) Diberi 18 = 324, cari .
324
2
441

441
324
Diberi 7 × 7 = 49, cari 49 . Given 21 = 441, find . Given 18 = 324, find .
2
2
49
Given 7 × 7 = 49, find .
 =   =  2
21
18
324
441
2
 =  = 21 = 18
7 × 7
49
= 7
7. Hitung nilai bagi setiap yang berikut tanpa menggunakan kalkulator. SP 3.1.4 TP2
Calculate the value of each of the following without using a calculator.
(a) (–6) 2 (b) (0.7) 2
24 2
= (–6) × (–6) = 0.7 × 0.7
= 24 × 24
= 576 = 36 = 0.49
(c) (–5.5) 2 2 2 8 2

(d)   (e) – 11 
9
= (–5.5) × (–5.5)

= 30.25 = 2 × 2 = – 8   8 
× –
9 9 11 11
= 4 = 64
81 121

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