Fraction 002

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1 part ½ part ¼ part Fraction number a nominator b denominator (PECAHAN DAN LAMBANG NYA ) (PENGERTIAN )

Transcript of Fraction 002

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1 part

½ part

¼ part

Fraction number

a nominator

b denominator

(PECAHAN DAN LAMBANG NYA )

(PENGERTIAN )

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Example(contoh )

1.Find the number from shadded of these diagram

a. b.

c. d.

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2. Buatlah arsiran sesuai pecahan dibawahnya (make the right shadow of these diagram below )

a. b.

c. d.3/10

1 / 45/12

3/8

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Equal fraction (PECAHAN SENILAI)

1 / 4 2 / 8 4 / 16Pecahan senilai diperoleh dengan mengalikan pembilang dan penyebut dengan suatu bilangan yang samaa = axn b bxn

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Example (Contoh )

Find of three equal fraction1.2/52. 3/83.1/64. 5/75. 4/9

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Simplying fraction

48

12

4 1 8 2

=

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36

12

3 16 2

=

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Exercise1.Make of simple fraction :a.30 / 75b.24/ 60c. 16 / 72d. 3000 / 15000e. 4444 / 6666

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Mixed number (Pecahan campuran )

.

1 1/4 5/4

1/44/4

1/41

=

+

+

Example 1

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..

2 1/8 = 17 /8

1/88/88/8

1/811

Example 2

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Comparing and ordering fractionLeast than or great than : 1/3 and 2/5 ? Look of diagram ,

1/3

2/5

1/3 < 2/5

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Arrange from the least to the greatest1 / 2 , 3/7 and 2/5

1/2

3 /7

2/5

so : 2/5 , 3/7 , 1/ 2 or 2/5 < 3/7 < 1/2

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Exercise 1.Add “ < “ or “ > “ ,between two fractions

belowa. 2 … 5 5 9b. 4 … 7 9 15c. 6 … 4 11 9d. 9 … 4 21 9

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2.Convert into fraction

a.3 1/3b. 4 2/5c. 5 2/7d. 7 2/3e. 2 5/9

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3. Convert into mixed number !a.35 /8b.50 /6c. 25 /4

d.

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Decimal , Percent and Permil

236,745,476887,576478,624/10015/10075/1000125/1000 255/1000

Decimal

Percent ( % )

Permil (/oo )

The denominator is : 10 ,100 , 1000 , 10000 , …………….

The denominator is : 1000

The denominator is : 100

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Exercise

no fraction decimal percent permil

1 ¼

2 0,125

3 15%

4 40/oo

5 1/8

6 0,15

7 12,5%

8 240 /oo

Change and complete table below

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Operation of FractionB.1 .Adding and Subtracing of fraction

Look of diagram below

3/4

+

+ =

5/87/8 1 4/8 = 1 1/2

1 1/42/4

=

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1/2

2/6

+

3/6

1/3

+=

=

5/6

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2 3/4 - 1 1/3=

-

1 5/ 12

1

5/12

1/3

9/12

-3/4

4/121

1

1

1

1

1

=

=

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Exercise(latihan )

Find result of adding and subtracing below !1.3/5 + 2/3 2. 1/6 + ¾3. 3 1/3 + 2 ¼ 4.6 ¾ + 3 4/55. 5/8 - 2/5 6. 2 4/5 - 2/37. 7 1/5 – 3 ¾ 8. 5 1/6 – 2 3/4

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B.2. Multiplyng and deviding

. 1/3 X 3 / 4 = 3/12 = 1/4

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2/5 x ½ = 2/10 = 1/5

.

Multipllyng :a X c = aXcB d bxd

Devidinga : c = a X d = axdB d b c bxc

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Adding2/3 : ½ = 2/3 X 2/1

.X =

2/3

4/3

2

=4/3

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2/3 : 2/5 = 2/3 X 5/2 .

2/3

10/6

5/2

x =

=10/6

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Exercise (latihan )

Find resuli of multiplyng and deviding below !1. ¾ X 2/3 2. 4/5 X 3/83. 3 2/3 X 5 5/11 4. 2 1/4 X 2 2/95. 3/5 : 6 /15 6. 5/7 : 7 /107. 4 ½ : 3 3/5 8. 3 1/3 : 2 1/6

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