Abbreviations used: eg P3, U1.1, Q1 refer to Conquer Problem Sums for Primary 3, unit 1.1, question 1.
P4, U2.5, Q7
Miss Lim bought a bag of chocolates. She gave 4/5 of the chocolates to her class pupils and 2/3 of the remaining chocolates to her pupils in her CCA group. If she was left with 30 chocolates, how many chocolates did she buy at first?
P4, U2.5, Q8
Mr Tan spent 2/7 of his salary on a television and 3/10 of his remaining money on a DVD player. If he was left with $630 himself, how much was his salary?
P4, U2.5, Q9
A fruit-seller started the day with 360 oranges. He sold 4/9 of the oranges and gave 2/5 of the remainder away. He placed the rest into boxes of 30. How many boxes would he need?
P5, U2.2, Q5
At a class gathering, 15 pupils decided to roller blade, 3/5 of the remaining pupils chose cycling and the remaining pupils chose swimming. If 1/4 of the class chose swimming, how many pupils were at the class gathering?
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