MALT©2006 Maths/Fractions Slide Show : Lesson 6 Fractions Lesson 6 Adding Fractions Part 1
MALT©2006 Maths/Fractions Slide Show : Lesson 6 WALT : add fractions of the same denominator. 1 4 1 4 +
MALT©2006 Maths/Fractions Slide Show : Lesson 6 WALT : add fractions of the same denominator. 1 5 3 5 +
3 8 2 8 + Read aloud this sum
3 8 2 8 + The fractions have the same denominator eighths
3 8 2 8 + Three  eighths add  two  eighths equals  five  eighths. eighths
3 8 2 8 + Three  eighths add  two  eighths equals  five  eighths. eighths 5 8
4 7 2 7 + Four sevenths add two sevenths  equals six fourteenths. 6 14 Is this correct ? Who can explain why it’s wrong ?
4 7 2 7 + It’s wrong because sevenths are being added. 6 14 So the answer must be in sevenths.
4 7 2 7 + Four sevenths add two sevenths equals six sevenths. 6 7 The answer must be in sevenths.
O.K. some for you to try. You can discuss these with a friend. Thinking time starts now ! +  1 7  7  +  3 8  8  3  +  2 6  6  2  +  5 9  9
The answers. +  1 7  7  +  3 8  8  3  +  2 6  6  2  +  5 9  9  5 7 5 6 7 9 7 8
1 5 3 5 + Read aloud this sum 1
1 5 3 5 + These fractions can be added because they have the same denominator 1 fifths
1 5 3 5 + So think about it like this…. 1 One whole…………… add one fifth ……………  add three fifths …………… equals
1 5 3 5 + So think about it like this…. 1 One whole…………… add one fifth ……………  add three fifths …………… equals 1 4 5 One and four fifths
O.K. some for you to try. You can discuss these with a friend. Thinking time starts now ! +  1 7  7  +  3 8  8  3  +  2 6  6  2  +  5 9  9  1 1 1 2
The answers +  1 7  7  +  3 8  8  3  +  2 6  6  2  +  5 9  9  1 1 1 2 1 1 2 1 7 9 5 7 7 8 5 6
 
7 8 3 8 + Yes we can because they are both eighths . eighths How about these factions. Can we add these together ?
7 8 3 8 + How many eighths altogether ? 10 8
7 8 3 8 + How many eighths altogether ? 10 8 This is the right answer but it is written as an  improper fraction.
7 8 3 8 + What is ten eighths as  a  mixed number ? 10 8 This is the right answer but it is written as an  improper fraction.
7 8 3 8 + 10 8 2 8 1 We change this  improper fraction  into a  mixed number.
7 8 3 8 + 10 8 2 8 1 1 1 4 We then  simplify  this fraction to get this answer.
7 8 3 8 + 10 8 2 8 1 1 1 4 Any questions or comments about this bit ?
7 8 3 8 + 10 8 2 8 1 1 1 4 Any questions or comments about this bit ?
7 8 3 8 + 10 8 2 8 1 1 1 4 Eighths, how many ?
7 8 3 8 + 10 8 2 8 1 1 1 4 Eighths, how many ?  ten
7 8 3 8 + 10 8 2 8 1 1 1 4 Or see them as  one whole  and  two eighths .
7 8 3 8 + 10 8 2 8 1 1 1 4 Or see them as  one whole  and  two eighths .
7 8 3 8 + 10 8 2 8 1 1 1 4 Any questions or comments about this bit ?
7 8 3 8 + 10 8 2 8 1 1 1 4 equals
O.K. some for you to try. You can discuss these with a friend. Thinking time starts now ! +  5 7  7  +  3 6  6  3  +  2 4  4  4  +  7 9  9  1
Here come the answers !
O.K. the answers. +  5 7  7  +  3 6  6  3  +  2 4  4  4  +  7 9  9  1 2 7 2 9 1 6 1 4 1 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.

Adding fractions revision

  • 1.
    MALT©2006 Maths/Fractions SlideShow : Lesson 6 Fractions Lesson 6 Adding Fractions Part 1
  • 2.
    MALT©2006 Maths/Fractions SlideShow : Lesson 6 WALT : add fractions of the same denominator. 1 4 1 4 +
  • 3.
    MALT©2006 Maths/Fractions SlideShow : Lesson 6 WALT : add fractions of the same denominator. 1 5 3 5 +
  • 4.
    3 8 28 + Read aloud this sum
  • 5.
    3 8 28 + The fractions have the same denominator eighths
  • 6.
    3 8 28 + Three eighths add two eighths equals five eighths. eighths
  • 7.
    3 8 28 + Three eighths add two eighths equals five eighths. eighths 5 8
  • 8.
    4 7 27 + Four sevenths add two sevenths equals six fourteenths. 6 14 Is this correct ? Who can explain why it’s wrong ?
  • 9.
    4 7 27 + It’s wrong because sevenths are being added. 6 14 So the answer must be in sevenths.
  • 10.
    4 7 27 + Four sevenths add two sevenths equals six sevenths. 6 7 The answer must be in sevenths.
  • 11.
    O.K. some foryou to try. You can discuss these with a friend. Thinking time starts now ! + 1 7 7 + 3 8 8 3 + 2 6 6 2 + 5 9 9
  • 12.
    The answers. + 1 7 7 + 3 8 8 3 + 2 6 6 2 + 5 9 9 5 7 5 6 7 9 7 8
  • 13.
    1 5 35 + Read aloud this sum 1
  • 14.
    1 5 35 + These fractions can be added because they have the same denominator 1 fifths
  • 15.
    1 5 35 + So think about it like this…. 1 One whole…………… add one fifth …………… add three fifths …………… equals
  • 16.
    1 5 35 + So think about it like this…. 1 One whole…………… add one fifth …………… add three fifths …………… equals 1 4 5 One and four fifths
  • 17.
    O.K. some foryou to try. You can discuss these with a friend. Thinking time starts now ! + 1 7 7 + 3 8 8 3 + 2 6 6 2 + 5 9 9 1 1 1 2
  • 18.
    The answers + 1 7 7 + 3 8 8 3 + 2 6 6 2 + 5 9 9 1 1 1 2 1 1 2 1 7 9 5 7 7 8 5 6
  • 19.
  • 20.
    7 8 38 + Yes we can because they are both eighths . eighths How about these factions. Can we add these together ?
  • 21.
    7 8 38 + How many eighths altogether ? 10 8
  • 22.
    7 8 38 + How many eighths altogether ? 10 8 This is the right answer but it is written as an improper fraction.
  • 23.
    7 8 38 + What is ten eighths as a mixed number ? 10 8 This is the right answer but it is written as an improper fraction.
  • 24.
    7 8 38 + 10 8 2 8 1 We change this improper fraction into a mixed number.
  • 25.
    7 8 38 + 10 8 2 8 1 1 1 4 We then simplify this fraction to get this answer.
  • 26.
    7 8 38 + 10 8 2 8 1 1 1 4 Any questions or comments about this bit ?
  • 27.
    7 8 38 + 10 8 2 8 1 1 1 4 Any questions or comments about this bit ?
  • 28.
    7 8 38 + 10 8 2 8 1 1 1 4 Eighths, how many ?
  • 29.
    7 8 38 + 10 8 2 8 1 1 1 4 Eighths, how many ? ten
  • 30.
    7 8 38 + 10 8 2 8 1 1 1 4 Or see them as one whole and two eighths .
  • 31.
    7 8 38 + 10 8 2 8 1 1 1 4 Or see them as one whole and two eighths .
  • 32.
    7 8 38 + 10 8 2 8 1 1 1 4 Any questions or comments about this bit ?
  • 33.
    7 8 38 + 10 8 2 8 1 1 1 4 equals
  • 34.
    O.K. some foryou to try. You can discuss these with a friend. Thinking time starts now ! + 5 7 7 + 3 6 6 3 + 2 4 4 4 + 7 9 9 1
  • 35.
    Here come theanswers !
  • 36.
    O.K. the answers.+ 5 7 7 + 3 6 6 3 + 2 4 4 4 + 7 9 9 1 2 7 2 9 1 6 1 4 1 1 1 1
  • 37.
    MALT©2007 Maths/Fractions SlideShow : Lesson 6 end of slideshow
  • 38.
    MALT©2007 Maths/Fractions SlideShow : Lesson 6 follow up tasks textbook page 40 symmetry games card games WALT : add fractions of the same denominator.