Page 38 - Hybrid PBD 2021 Form 1 - Matematik

Matematik Tingkatan 1 Bab 1

1.5 Nombor Nisbah Buku Teks
PBD Rational Number ms. 23 – 26
PBD
PBD
25. Padankan setiap yang berikut. SP 1.5.1 TP2
Match each of the following.

(a) 0.45 (b) π (c) 1.25
2
2 = 8 = 9 = 3.1415… = 1 1
3 3 20 4

Nombor nisbah Nombor bukan nisbah
Rational number Irrational number

(e) e (e) √ 2 (f) – 4.4 (g) 1.5781…

= 2.7182… = 1.4142… 4
= –1.1

26. Hitung setiap yang berikut. SP 1.5.2 TP3
Calculate each of the following.

1
1
2  2

(a) 9.5 – 1 × 0.5 + (–2.7) (b) 3.8 + 6 – 1.025 ÷ – 2
2
 1 – 1 2 ÷ (–0.25) = 9.5 – 1.5 × 0.5 – 2.7 8 5 2
3
5
 2
 2
= 3 – 5 ÷ – 1 = 9.5 – 0.75 – 2.7 = (3.8 + 6.125 – 1.025) ÷ – 5
15 4 = 6.05 = 8.9 ÷ – 2
 2
= –2 × (–4) 5
15 = –22 1
= 8 4
15

3

2


(c) –1.45 × –3 3 2 – 0.625 × 4.3 (d) –5.2 + 9 – 6.25 ÷ 1 1 (e) –1.1 ÷ 11 + –1 1 2 × 2.4
8
15
4
4
4
3
1
2



= + 1.45 × 3 3 2 – 0.625 × 4.3 = –5.2 + 9 – 6 1 2 ÷ 1 1 = –1.1 × 15 + –1 × 2.4
11
4
4
8
4
4
1
5

=  29 × 15 2 – 2.6875 = –5.2 + 3 ÷ 1 1 = –1.5 + – × 24 2 6
1
4
8
20
4
10
4
1
= 87 – 2.6875 = –5.2 + 25 5 × 4 1 = –1 + (–3) 1 2
16 8 5 2
= 2.75 = –5 2 + 2 2 1 1 = –4 1
10 2 2
= –2 7
10
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