Page 11 - Steady Mate Tg1 - Book A

Matematik Tingkatan 1 Bab 1 Nombor Nisbah

Contoh 7. 9 × 285 + 9 × 215 8. 32 × 27 – 32 × 17
= 9 × (285 + 215) = 32 × (27 – 17)
6 × 175 + 6 × 25
Hukum Kalis Agihan = 9 × 500 = 32 × 10
= 6 × (175 + 25) Distributive Law = 4 500 = 320
= 6 × 200
= 1 200

Contoh 9. 1 × 61 × 7 10. 5 × 23 × – 1 2
1
7 5
1 1 1
1
× 37 × 9 = × 7 × 61 = 23 × 5 × – 2
9 Hukum Identiti 7 5
Identity Law = 1 × 61
1 = 23 × (–1)
= × 9 × 37 = 61
9 = –23
= 1 × 37
= 37

K Selesaikan setiap yang berikut. ARAS S
Solve each of the following.

Contoh 1. Pada mulanya, seekor ikan salmon berada 30 cm di
bawah aras air sungai. Kemudian, ikan itu melompat
Seekor burung pekaka sedang bertenggek di dahan sebatang secara menegak setinggi 157 cm di atas aras air dan
pokok pada ketinggian 85 cm di atas aras air sungai. Burung seterusnya menyelam secara menegak sejauh dua kali
pekaka itu menjunam secara menegak ke dalam sungai kedalaman awalnya. Hitung jarak menegak, dalam cm,
untuk menangkap ikan yang berada 60 cm di bawah aras yang dilalui oleh ikan salmon itu.
air. Kemudian burung pekaka itu terbang menegak ke atas At first, a salmon fish is 30 cm below water level in a river.
setinggi dua kali jarak kedudukan awal di atas aras air. Then, it jumps vertically as high as 157 cm above water level
Hitung jarak menegak, dalam cm, yang dilalui oleh burung and dives straight down to a depth twice its initial depth.
pekaka itu. Calculate the vertical distance, in cm, that the salmon fish has
A kingfisher is perching on the branch of a tree at the height of travelled. TP 4
85 cm above water level in a river. The kingfisher dives straight
down into the river to catch a fish at 60 cm below water level. Then Jarak yang dilalui oleh Tanda + mewakili kedudukan
the kingfisher flies up vertically to a height twice its initial distance ikan salmon di atas aras air.
above water level. Calculate the vertical distance, in cm, that the Distance that the salmon Tanda – mewakili kedudukan
kingfisher has covered. TP 4 fish has travelled di bawah aras air.
+ sign indicates position
= +157 – (–30) – (–30 × 2) above water level.
Jarak yang dilalui oleh Tanda + mewakili kedudukan di = 157 + 30 – (–60) – sign indicates position
burung pekaka atas aras air. = 157 + 30 + 60 below water level.
Distance that the kingfisher Tanda – mewakili kedudukan di = 247 cm
bawah aras air.
has covered + sign indicates position above
= +85 – (–60) + (+85 × 2) water level.
= 85 + 60 + 170 – sign indicates position below
water level.
= 315 cm

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