Fractions for 7th standard students by Rajeshree K. Bhanushali
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The document is an educational outline for a 7th grade mathematics lesson focused on fractions. It includes definitions, comparisons, equivalent fractions, and historical context regarding fractions' development. The content also features practical examples and exercises related to fractions.
Fractions for 7th standard students by Rajeshree K. Bhanushali
- 1. K. J. SOMAIYA B.ED COLLEGE Name : Rajeshree K. Bhanushali Subject : Mathematics. Topic : Fraction Standard : 7th
- 2. CONTENTS Fraction Comparing fraction Equivalent fraction Like fraction unlike fraction History of fraction
- 4. If there are five people &each has equal share than what piece would each person get?
- 5. It would be one fifth part
- 6. FRACTION • By dividing a whole number into equal parts we create fraction. 0 1 A B C D E F G H 0/8 1/8 2/8 3/8 4/8 5/8 6/8 7/8 8/8
- 7. Quarter to 12 In Maths test Sapana got 28/30 Tarang got 7/30
- 8. Two have been eaten by cat There are six pastries
- 9. Earth What fraction of earth is surrounded by water?
- 10. How many are in ? 2 How many are in ? 3 2 How many are in ? How many are in ? 2
- 11. If =1 2 = ?6 =?4 6
- 12. Comparing Fractions What would you like or of a 1 1 5 bar of chocolate ? 4 This 1/5 1 4 - total number of parts, LCM =20 1/4=1 5/4 5 1/5=1 4/5 4 1 1 5/20>4/20 4 Bigger than 5
- 13. Compare the fractions. (a)1/2 & 1/3 LCM of 2 &3 = 6 1/2=1 3/2 3 =3/6 &1/3= 1 2/3 2=2/6, 3/6>2/6 ,1/2>1/3 (b)2/8 & 5/20 LCM=40, 2/8 =2 5/8 5=10/40 & 5/20=5 2/20 2=10/40 2/8=5/20 Such fractions are called as equivalent fraction
- 14. Equivalent fraction =
- 15. EQUIVALENT FRACTION Divide pastry between two person.what fraction of pastry each person would get? =? =?
- 16. History of Fraction Egyptian Fraction + Unit fraction
- 17. Fraction came from the hindus by Brammagupta without fraction bar. 1 For e.g. 3 Arab came up with bar. The common denominator was found by multiplying the denominators. In the seventh century, the least common multiple was used extensively when adding and subtracting fractions.
- 18. Like Fraction + Same denominator just add/subtract numerator
- 19. Unlike Fraction LCM 12 2 4,3 + 2 2,3 = + 3 1,3 1,1 = + = + =
- 20. LCM=9,