Equivalent fractions and multiplying by a whole number
Answers are for parents and teachers.
1
Write 4 as a fraction with denominator 5, and 5/5 + 2/5 as a mixed number.
4 = 20/5. 5/5 + 2/5 = 7/5 = 1 2/5.
2
Find the missing numbers: 3/4 = ?/8 and 6/9 = 2/?.
3 × 2 = 6, so 6/8. 6 ÷ 3 = 2, so 9 ÷ 3 = 3, so 2/3.
3
Find 7 × 1/4 and write it as a mixed number.
7/4 = 1 3/4.
4
A tailor needs 5/6 metre of cloth for each school bag. How much cloth for 3 bags? Write it as a mixed number.
3 × 5/6 = 15/6 = 12/6 + 3/6 = 2 3/6 m.
5
Marwan says 8 × 1/2 = 8/16. Explain his mistake and give the correct product.
He multiplied the denominator too. 8 × 1/2 = 8/2 = 4 (eight halves make 4 wholes).