Flashcards
Fractions
Cards in this deck (6)
- 1FractionsThe Fraction Button: ab/c
To enter 1/4 press 1 ab/c 4
To work out 1/5 x 3/4 press
1 ab/c 5 ab/c x 3 ab/c 4
To reduce a fraction enter it then press=
E.g. 9/12- 9 ab/c 12 =
E.g. 2 3/8- 2 ab/c 3 ab/c 8 SHIFT ab/c - 2FractionsMultiplying by hand:
3/5 x 4/7 = 3 x 4/ 4 x 7 = 12/35
5/8 x 1/2 5/16
6/9 x 4/5 = 24/45 - 3FractionsDividing by hand:
Turn the 2nd denominator upside down then multiply
3/4 / 1/3 = 3/4 3/1 3 x 3/4 x 1 = 9/4
13/24 / 15/7 13/24 / 7/15= 91/360
9/8 / 7/4= 9/8 / 4/7= 36/ 56 - 4FractionsCancelling down:
Divide top and bottom by same number
3/9 /3= 1/3
6/8 /2= 3/4
6/16 /2= 3/8 - 5FractionsAdding by hand:
Get a common denominator
2/3 + 1/5 = 2 x 5/3 x 5 + 1 x 3/ 5 x 3 =
10/15 + 3/15
7/9 + 2/3 = 7/9 + 6/9 = 13/9
7/9 + 2/8 = 56/72 +18/72 = 74/72 - 6FractionsSubtracting by hand:
Add or Subtract ONLY IF THE BOTTOM NUMBERS ARE THE SAME
E.g. 10/15 + 3/15 = 13/15 or
2/6 + 1/6= 3/6
5/7 - 3/7 = 2/7
2/5 - 1/9 = 18/45 - 5/45 = 13/45
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- Flashcards on Fractions, created by Shonnag Scutt on 23/10/2015.
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- Shonnag Scutt
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