IMOClass 3 › Chapter Test

Fractions (Intro) — Chapter Test

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Q1
Which unit fraction is the largest?
The smaller the denominator, the larger the unit fraction, so ½ is largest.
Q2
Which is the odd one out (three are unit fractions)?
⅔ has numerator 2; the others have numerator 1, so they are unit fractions.
Q3
½ of 10 = 5 and ½ of 8 = 4, so ½ of 6 = ___ ?
Half of 6 is 3.
Q4
What is ¼ + ¼ + ¼ + ¼?
Four quarters make one whole.
Q5
What is the numerator in ⅗?
The top number is 3.
Q6
What is ⅖ + ⅖?
2 + 2 = 4 over 5 → ⅘.
Q7
What is ⅗ − ⅕?
3 − 1 = 2 over 5 → ⅖.
Q8
Which fraction is bigger, ⅔ or ⅓?
⅔ is two parts and ⅓ is one part of the same whole, so ⅔ is bigger.
Q9
What is ½ of 12?
12 ÷ 2 = 6.
Q10
A cake is cut into 4 equal pieces and Riya eats 1. What fraction did she eat?
1 out of 4 equal pieces is ¼.
Q11
A chocolate bar has 9 equal squares. How many squares are ⅓ of the bar?
⅓ of 9 = 9 ÷ 3 = 3 squares.
Q12
A jug is filled ¼ in the morning and ¼ more at noon. How full is it now?
¼ + ¼ = 2/4 = ½ full.
Q13
What is ¾ of 12?
¼ of 12 = 3, so ¾ of 12 = 3 × 3 = 9.
Q14
Two-fifths of 20 students play cricket. How many students is that?
⅕ of 20 = 4, so ⅖ of 20 = 2 × 4 = 8 students.
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