02 fractions 2nd project

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[1] FRACTIONS EFFECTIVES NOTES A A fraction is a part of a whole Pecahan adalah sebahagian daripada keseluruhan Example / Contoh : (a) 3 1 B A proper fraction is a fraction with its numerator smaller than its denominator. Pecahan wajar adalah pecahan dengan pengangka lebih kecil daripada penyebutnya. Example / Contoh : (a) 5 1 (b) 7 3 C A mixed number is a combination of a whole number and a proper fraction. Nombor bercampur adalah gabungan nombor bulat dan pecahan wajar. Example / Contoh : (a) 1 4 3 D Convert a mixed number to an improper fraction Menukar nombor bercampur kepada pecahan tak wajar Example / Contoh : (a) + 1 + = ( + ) = = 1 1 2 - 2 1 E Addition of mixed numbers Example / contoh : (a) + 1 + (b) = ( 3+1+2 ) +( + ) = 6 = 6 + 1 = 7 + 1 + = + 1 + = + 1 + = 5 = 5 Read as ‘one fourth’ or ‘one over three’ Dibaca sebagai ‘satu pertiga’ Read as ‘one and three over four’ Dibaca sebagai ‘satu tiga per empatWhole Number Nombor bulat Numerator Pengangka Denominator Pennyebut

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Page 1: 02 FRACTIONS 2nd Project

[1]

FRACTIONS EFFECTIVES NOTES A A fraction is a part of a whole

Pecahan adalah sebahagian daripada keseluruhan

Example / Contoh :

(a) 3

1

B A proper fraction is a fraction with its numerator smaller than its denominator.

Pecahan wajar adalah pecahan dengan pengangka lebih kecil daripada penyebutnya.

Example / Contoh :

(a) 5

1 (b)

7

3

C A mixed number is a combination of a whole number and a proper fraction.

Nombor bercampur adalah gabungan nombor bulat dan pecahan wajar.

Example / Contoh :

(a) 14

3

D Convert a mixed number to an improper fraction

Menukar nombor bercampur kepada pecahan tak wajar

Example / Contoh :

(a) + 1 +

= ( + )

=

= 1

1

2

- 2

1

E Addition of mixed numbers

Example / contoh : (a) + 1 + (b)

= ( 3+1+2 ) +( + )

= 6

= 6 + 1

= 7

+ 1 +

= + 1 +

= + 1 +

= 5

= 5

Read as ‘one fourth’ or ‘one over three’

Dibaca sebagai ‘satu pertiga’

Read as ‘one and three over four’

Dibaca sebagai ‘satu tiga per empat’

Whole Number Nombor bulat

Numerator Pengangka

Denominator Pennyebut

Page 2: 02 FRACTIONS 2nd Project

[2]

F Subtraction of mixed numbers

Example / contoh : (a) - 1 -

= -

= 1

= 1 -

=

(b) - 3 -

= - 3 -

= - 3 -

=

(c) Multiplication of fractions

Example / contoh : (a) × 64

= × 64

= 13 × 8

= 104

G Division of fractions

Example / contoh : (a) ÷ 2

= ÷

= ×

=

(b) ÷

= ×

= ×

=

1

8

1

2

Page 3: 02 FRACTIONS 2nd Project

[3]

FRACTION (PECAHAN)

PAPER 1

Answer all the questions. For each question, choose only one answer from the options A, B, C and D.

Jawab semua soalan. Bagi setiap soalan, pilih satu jawapan sahaja daripada pilihan jawapan A,B,C

dan D.

1 Diagram 1, the shaded region is drawn on squares of equal size.

Dalam rajah 1, bahagian berlorek dilukis pada petak-petak segi empat sama yang

sama besar.

What is the fraction of the whole diagram is shaded?

Berapakah pecahan daripada seluruh rajah itu dilorek?

A

4

1

B

5

2

C

8

3

D

7

4

2 Which of the following is incorrect?

Antara berikut, yang manakah adalah tidak benar?

A

4

11 = 2

4

1

B

9

32 = 3

9

5

C

6

44 = 7

6

2

D

5

28 = 5

5

3

Page 4: 02 FRACTIONS 2nd Project

[4]

4 Diagram 2 shows a number line.

Rajah 2 menunjukkan satu garis nombor.

4

3

Y 2

Find the value of X.

Cari nilai X.

A 1

8

1

B 1

3

1

C 1

6

1

D 1

4

1

5 1 4

3 + 2

3

2 -

3

2 =

A 4

4

1

B 4

3

1

C 3

4

3

D 3

3

1

6 There were 602 pupils in a hall. 7

3 of them were boys and

3

1 of the boys were

spectacles. How many boys did not wear spectacles?

Terdapat 602 orang murid di dalam sebuah dewan. 7

3 daripada mereka ialah

murid lelaki dan 3

1 daripada murid lelaki memakai cermin mata.

Berapa orang murid lelakikah yang tidak memakai cermin mata?

A 86

B 106

C 172

D 258

Page 5: 02 FRACTIONS 2nd Project

[5]

7 After spending 5

1 of his money, Supian has RM1 250 left. How much money

does Ahmad have in the beginning?

Selepas membelanjakan 5

1 daripada wangnya, Ahmad masih ada baki

RM1 250. Berapakah jumlah wang asal Supian?

A RM1 800

B RM1 200

C RM350

D RM280

8 Table 1 shows Syahizam,s money.

Jadual 1 menunjukkan wang Syahizam. Money / Wang Quantity /Kuantiti

RM100 3 Table 1

Jadual 1 RM50 8

RM10 7

RM5 6

He saves 4

1 of the money. He gives

5

2 of the remaining money to his brothers

and spends the remainder. How much does he spend?

Dia menyimpan 4

1 daripada wangnya. Dia memberikan

5

2 daripada baki wang

itu kepada abangnya dan selebihnya dibelanjakan. Berapa banyakkah wang yang

dibelanjakan?

A RM360.00

B RM385.00

C RM480.00

D RM800.00

Page 6: 02 FRACTIONS 2nd Project

[6]

9 There are 240 beads in a container. Sakinah uses 8

3 of them to make a necklace

and puts the rest into a bottle. How many beads are there in the bottle?

Terdapat 240 biji manik di dalam sebuah bekas. Sakinah menggunakan 8

3

daripadanya untuk membuat seutas rantai dan memasukkan bakinya ke dalam

sebuah botol. Berapa banyakkah manik yang ada di dalam botol itu?

A 214

B 170

C 164

D 150

10 5 3

1 ÷

9

1 =

A 36

B 48

C 60

D 72

Page 7: 02 FRACTIONS 2nd Project

[7]

FRACTION (PECAHAN)

PAPER 2

Answer all the questions. Write your answer clearly in the spaces provided.

Jawab semua soalan. Tulis jawapan anda dengan jelas dalam ruang yang disediakan.

1 Convert 3

5 into a mixed number.

Tukarkan 3

5 kepada bentuk nombor bercampur.

2 Convert 1 5

2 to decimals.

Tukarkan 1 5

2 dalam bentuk perpuluhan.

3 Diagram 1 shows a number line.

Rajah 1 menunjukkan satu garis nombor.

What is M?

Apakah nilai M?

4

1 M

8

4 1

Page 8: 02 FRACTIONS 2nd Project

[8]

4 State one equivalent fraction of 4

1

Nyatakan satu pecahan setara daripada 4

1

5 + + =

6 A hawker prepares of orange juice. He sold of orange juice in the morning

and of orange juice in the afternoon. How much orange juice is left?

Seorang penjaja menyediakan Ɩ jus oren. Beliau menjual Ɩ jus oren pada waktu pagi

dan Ɩ jus oren di sebelah petang. Berapa banyak jus oren yang tinggal?

Page 9: 02 FRACTIONS 2nd Project

[9]

7 8

3of 720 pupils are boys and the rest are girls . How many are girls?

8

3 daripada 720 murid adalah lelaki dan selebihnya adalah perempuan.

Berapakah bilangan murid perempuan?

8 - 3 - =

Page 10: 02 FRACTIONS 2nd Project

[10]

9 Table 1 shows the mass of a packet of sugar and a packet of salt.

Jadual 1 menunjukkan berat sepeket garam dan sepeket gula.

Table 1

Jadual 1

Azlina used 8

5 of total mass of salt and sugar.

Find the total mass in kg, of sugar and salt left.

Azlina menggunakan 8

5 daripada jumlah berat garam dan gula itu.

Hitung jumlah berat dalam kg , gula dan garam yang tinggal.

Sugar / Gula Salt / Garam

650 g

1.27 kg

10 ÷ =