SMK SUBANG JAYAPENTAKSIRAN BULAN MACMATEMATIK TINGKATAN 21 JAMNAMA :__________________________________TINGKATAN: _______________Answer all questions. Write your answers in the spaces provided in this question paper.Jawab semua soalan. Tulis jawapan anda di ruang jawapan yang disediakan dalam kertas soalan ini.

1. (a) Complete the following sequence of perfect squares. Lengkapkan urutan nombor kuasa dua sempurna yang berikut.

Answer/ Jawapan

64 ,_81_, 100, 121, _144_ , _169_

[3 marks/markah] (b) Complete the following steps by filling in the correct answers.Lengkapkan langkah-langkah berikut dengan mengisi petak-petak kosong dengan jawapan yang betul.

Answer/ Jawapan

6

25

1

1_125

[4 marks/markah]

( c )Kampung Duku will be getting electricity supply from the government next year. TNB has allocated a roll of cable which is 1 500 m long to connect the village to the nearest power supply centre. The total number of poles needed for the connection is 58. The distance between two poles is 30 m. Is the cable supply enough? Give your reason.Kampung Duku akan mendapat bekalan tenaga elektrik daripada kerajaan pada tahun hadapan. Pihak TNB telah memperuntukkan satu gulung kabel bekalan yang panjangnya 1 500 m untuk disambungkan ke kampung tersebut dari pusat bekalan utama yang berhampiran. Jumlah tiang yang diperlukan untuk menghubungkan pusat bekalan utama ke kampung ialah sebanyak 58 batang. Jarak antara dua tiang adalah 30 m. Adakah kabel yang dibekalkan itu mencukupi? Beri alasan anda. Answer/ Jawapan

Not enough .57 x 30 = 1710m (needed)Supplied by the government is 1500mSo, 1710 1500m = 210m (more needed)

[3 marks/markah]

2. (a) Determine the value of P, Q and R.Tentukan nilai P, Q dan R.

P-1-0.75Q

0R0.25

Answer/ JawapanP = ____- 1.25_______Q = ___-0.50 ______R = ____0.50______ [3 marks/markah]

(b)(i) Calculate the value of -6 +36 (- 4). Hitung nilai bagi -6 +36 (- 4).Answer/ Jawapan= -6 +(- 9)= -6 9 = - 15 (ii) Calculate the value of (8 -0.72) x and express the answer as a decimals.Hitung nilai bagi (8 -0.72) x dan ungkapkan jawapan sebagai nombor perpuluhan.Answer/ Jawapan= (8 0.72) x 0.75= 7.28 x 0.75= 5.46 [4 marks/markah]( c ) Puan Habibah has 15m cloth. She uses it to make 6 curtains and 4 tablecloths. Each curtain requires 1.35m of cloth and each tablecloth requires 80 cm of cloth. What is the length, in m, of the remaining cloth ? Puan Habibah ada 15m kain. Dia menggunakan kain itu untuk membuat 6 helai langsit dan 4 helai alas meja. Setiap langsir itu memerlukan 1.35m kain dan setiap alas meja memerlukan 80cm kain. Berapakah panjang, dalam m, baki kain itu?Answer/ JawapanTo make curtains = 1.35 m x 6 = 8.1 mTo make table cloths = 80 cm x 4 = 320 cm= 3.2 mThe remaining cloths = 15 m 8.1m 3.2 m = 3.7m

[3 marks/markah]3. (a) Circle the correct answers.Bulatkan pada jawapan yang betul

Answer/ Jawapan

(i) (1.1)2 = 1210.1211.211.01210.0121

(ii) = 5150.5121.2

(iii) = 90.090.9191.9

[3 marks/markah] (b)(i) 3 = Answer/ Jawapan= = = 8

(ii)

Answer/ Jawapan= ( + 1 ) = 1 = x = = 5

[4 marks/markah] ( c ) A Mathematics test is held in the school hall from 11.45 am to1.45 pm. The test consists of 60 questions. Ahmad takes an average of 1.5 minutes to answer each question. State the time he finishes answering all the questions. Ujian Matematik diadakan di dewan sekolah bermula dari 11.45 pagi hingga 1.45 petang. Ujian ini mengandungi 60 soalan. Purata masa Ahmad menjawab setiap soalan ialah 1.5 minit. Nyatakan waktu dia selesai menjawab kesemua soalan itu. Answer/ Jawapan1.5 minutes = 1.5x 60 = 90 seconds = 1 minute 30 seconds Time taken by Ahmad = 1 minute 30 seconds x 60 = 90 minutes = 1 hour 30 minutes Ahmad will finish at = 11.45 a.m + 1 hour 30 minutes = 1.15 p.m.

[3 marks/markah]

4. (a) (i) Diagram 1 shows a set of numbers. Arrange all the numbers in decreasing order. Rajah 1 menunjukkan sekumpulan nombor . susun semua nombor itu mengikut urutanm menurun.

-

-

Diagram 1Rajah 1

Answer/ Jawapan

= - -

, , , ,

(ii) Calculate the value of 7(- 5.6 ) +15 = Hitung nilai bagi 7(- 5.6 ) +15 =

Answer/ Jawapan

= 7 (- 5.6 x ) + 15= 7 (- 8.4 ) + 15= - 58.8 + 15= - 43.8 [4 marks/markah](b) Evaluate : Hitungi) =

ii) x =

Answer/ Jawapani) ii) x = 8 = 8 x = = 7 x 5 = 35 x

= 16

[3 marks/markah]

( c ) Jalil withdrew RM 2640.00 from his saving account. He gave of the money to his mother and used of the remaining money to pay the car loan car instalment. How much money does he left?Jalil mengeluarkan RM 2640.00 daripada akaun simpanannya. Dia memberikan daripada wang itu kepada ibunya dan menggunakan daripada baki wang itu untuk membayar ansuran keretanya. Berapakah baki wang yang tertinggal?

Answer/ JawapanTo mother = x 2640 = 660Balance = x 2640 = 1980 Car instalment = 1980 = 1485Balance = 2640 660 1485 = RM 495.00

[3 marks/markah]

5. (a) (i) State sum of the first five perfect squares Nyatakan hasil tambah lima kuasa dua sempurna yang pertama. (ii) 0.52 x 0.22 = 0.022

Answer/ Jawapani) Ii)1 + 4 + 9 + 16 + 25 = 55 0.25 x 0.04 = 0.01 = 25 0.0004 0.0004

[4 marks/markah](b) A farm has 15 rows of rubber trees. Each row has 20 trees. The farmer then plants 5 more rows. How many rubber tress altogether? Sebuah kebun terdapat 15 baris pokok getah. Setiap baris getah menpunyai 20 pokok getah. Pekebun telah menambah 5 baris pokok lagi. Berapakah jumlah pokok getah kesemuanya?

Answer/ JawapanTotal rows = 15 + 5 =201 rows = 20 trees 20 rows = 20 x 20 = 400 trees

[3 marks/markah]

( c ) Pak Hassan wants to fill 10 bags with flour. Each bag can fill up to 30kg of flour. If Pak Hassan has only 130kg flour, how much more kg of flour does he need to fill all the bags?Pak Hassan mahu mengisi 10 beg tepung. Setiap beg boleh diisi sehingga 30kg. jika Pak Hassan hanya ada 130kg tepung, berapa kilogram tepung lagi diperlukan untuk mengisi kesemua beg tersebut?

Answer/ Jawapan

Flour needed = 10 x 30 = 300 kgFlour that Pak Hassan has = 130 kg.Extra flour = 300 130 = 170 kg

[3 marks/markah]

SOALAN TAMAT

Disediakan oleh,Disemak oleh, Disahkan oleh,

.. .(MOHD SANI BIN ISMAIL)Guru Matematik1