Multiplication of Fractions
Last updated at March 18, 2019 by Teachoo
Let’s do this by examples.
2/3
× 4
= (2 × 4)/3
= 8/3
9
/
8
×
2
= (9 × 2)/8
= 9/4
2/3
×
5/4
= (2 × 5)/(3 × 5)
= 10/12
4 × 3
2
/
7
= 4 × (3+2/7)
= 4 × ((3 × 7 + 2)/7)
= 4 × ((21 + 2)/7)
= 4 × 23/7
= (23 × 4)/7
= 92/7
7/2
× 4
3/5
= 7/2 × (4+3/5)
= 7/2 × ((4 × 5 + 3)/5)
= 7/2 × ((20 + 3)/5)
= 7/2 × 23/5
= (7 × 23)/(2 × 5)
= 161/10
Subscribe to our Youtube Channel - https://you.tube/teachoo
Transcript
Multiplication of Fractions
Letβs do this by examples.
π/π Γ 4
= (2 Γ 4)/3
= 8/3
π/π Γ 2
= (9 Γ 2)/8
= 9/4
π/π Γ π/π
= (2 Γ 5)/(3 Γ 5)
= 10/12
4 Γ 3 π/π
= 4 Γ (3+2/7)
= 4 Γ ((3 Γ 7 + 2)/7)
= 4 Γ ((21 + 2)/7)
= 4 Γ 23/7
= (23 Γ 4)/7
π/π Γ 4 π/π
= 7/2 Γ (4+3/5)
= 7/2 Γ ((4 Γ 5 + 3)/5)
= 7/2 Γ ((20 + 3)/5)
= 7/2 Γ 23/5
= (7 Γ 23)/(2 Γ 5)
= 161/10
Show More