Fraction 002
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Transcript of Fraction 002
1 part
½ part
¼ part
Fraction number
a nominator
b denominator
(PECAHAN DAN LAMBANG NYA )
(PENGERTIAN )
Example(contoh )
1.Find the number from shadded of these diagram
a. b.
c. d.
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
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
Example (Contoh )
Find of three equal fraction1.2/52. 3/83.1/64. 5/75. 4/9
Simplying fraction
48
12
4 1 8 2
=
36
12
3 16 2
=
Exercise1.Make of simple fraction :a.30 / 75b.24/ 60c. 16 / 72d. 3000 / 15000e. 4444 / 6666
Mixed number (Pecahan campuran )
.
1 1/4 5/4
1/44/4
1/41
=
+
+
Example 1
..
2 1/8 = 17 /8
1/88/88/8
1/811
Example 2
Comparing and ordering fractionLeast than or great than : 1/3 and 2/5 ? Look of diagram ,
1/3
2/5
1/3 < 2/5
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
Exercise 1.Add “ < “ or “ > “ ,between two fractions
belowa. 2 … 5 5 9b. 4 … 7 9 15c. 6 … 4 11 9d. 9 … 4 21 9
2.Convert into fraction
a.3 1/3b. 4 2/5c. 5 2/7d. 7 2/3e. 2 5/9
3. Convert into mixed number !a.35 /8b.50 /6c. 25 /4
d.
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
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
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
=
1/2
2/6
+
3/6
1/3
+=
=
5/6
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
=
=
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
B.2. Multiplyng and deviding
. 1/3 X 3 / 4 = 3/12 = 1/4
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
Adding2/3 : ½ = 2/3 X 2/1
.X =
2/3
4/3
2
=4/3
2/3 : 2/5 = 2/3 X 5/2 .
2/3
10/6
5/2
x =
=10/6
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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