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MALT©2006 Maths/Fractions Slide Show : Lesson 6
Fractions Lesson 6Adding Fractions
Part 1
MALT©2006 Maths/Fractions Slide Show : Lesson 6
WALT : add fractions of the
same denominator.
14
14+
MALT©2006 Maths/Fractions Slide Show : Lesson 6
WALT : add fractions of the
same denominator.
15
35+
38
28
+
Read aloud this sum
38
28
+
The fractions have the same
denominatoreighths
38
28
+
Three eighths add two eighthsequals five eighths.
eighths
38
28
+
Three eighths add two eighthsequals five eighths.
eighths
58
47
27
+
Four sevenths add two sevenths equals six fourteenths.
614
Is this correct ?Who can explain why it’s wrong ?
47
27
+
It’s wrong because sevenths arebeing added.
614
So the answer must bein sevenths.
47
27
+
Four sevenths add two seventhsequals six sevenths.
67
The answer must be insevenths.
O.K. some for you to try.
You can discuss these with a friend.
Thinking time starts now !
4 + 17 7
4 + 38 8
3 + 26 6
2 + 59 9
The answers.
4 + 17 7
4 + 38 8
3 + 26 6
2 + 59 9
57
56
79
78
15
35
+
Read aloud this sum
1
15
35
+
These fractions can be addedbecause they have the same
denominator
1fifths
15
35
+
So think about it like this….
1
One whole…………… addone fifth …………… addthree fifths ……………
equals
15
35
+
So think about it like this….
1
One whole…………… addone fifth …………… addthree fifths ……………
equals
145
One and four fifths
O.K. some for you to try.
You can discuss these with a friend.
Thinking time starts now !
4 + 17 7
4 + 38 8
3 + 26 6
2 + 59 9
1
1
1
2
The answers
4 + 17 7
4 + 38 8
3 + 26 6
2 + 59 9
1
1
1
2
1 1
2 179
57
78
56
78
38
+
Yes we can because they areboth eighths.
eighths
How about these factions.Can we add these together ?
78
38
+
How many eighths altogether ?
10 8
78
38
+
How many eighths altogether ?
10 8
This is the right answerbut it is written as an improper fraction.
78
38
+
What is ten eighths as a mixed number?
10 8
This is the right answerbut it is written as an improper fraction.
78
38
+ 10 8
281
We change this improper fraction into a mixed number.
78
38
+ 10 8
281 11
4
We then simplify this fraction to get this answer.
78
38
+ 10 8
281 11
4
Any questions or comments about this bit ?
78
38
+ 10 8
281 11
4
Any questions or comments about this bit ?
78
38
+ 10 8
281 11
4
Eighths, how many ?
78
38
+ 10 8
281 11
4
Eighths, how many ? ten
78
38
+ 10 8
281 11
4
Or see them as one whole and two eighths.
78
38
+ 10 8
281 11
4
Or see them as one whole and two eighths.
78
38
+ 10 8
281 11
4
Any questions or comments about this bit ?
78
38
+ 10 8
281 11
4
equals
O.K. some for you to try.
You can discuss these with a friend.
Thinking time starts now !
4 + 57 7
4 + 36 6
3 + 24 4
4 + 79 9 1
Here come the answers !
O.K. the answers.
4 + 57 7
4 + 36 6
3 + 24 4
4 + 79 9 1
27
29
16
141
1 1
1
MALT©2007 Maths/Fractions Slide Show : Lesson 6
end of slideshow
MALT©2007 Maths/Fractions Slide Show : Lesson 6
follow up tasks
textbook page 40
symmetry games
card games
WALT : add fractions of the
same denominator.
