Problem of the Month

Problem of the Month


  • Maths Digest magazines

  • Mathematical Teasers, a book by Julio A. Mira

  • Family Maths magazine The Maths Connection

  • Singapore-Asia Pacific Mathematical Olympiad competition.

and a range of other sources.

Problem of the Month (December 2017)


Do research to name the five Platonic solids and state the property of each.


Last Month's Solution (November)


Christmas is less than 150 days away so here are a few puzzles to get you in the mood!

    1. 1. Red and white candy sticks cost $1.89 a dozen, how much would it cost to buy candy sticks for a school with 400 students?
    2. 2. One group of Salvation Army carol singers goes to every 6th house in a neighbourhood, another goes to every 8th house. At which house will they first meet?
    3. 3. Ten elves each made ten xylophones. Each xylophone had ten keys. They did this for ten days. How many keys were made by elves? Can you show this in exponential form and solve.
    4. 4. Each batch of 48 Christmas mince pies that Amy makes takes 20 minutes in the oven. If the oven is on for 3 hours and 55 minutes (15 minutes for pre-heating), how many mince pies did Amy make?
    5. 5. Beth is making gingerbread men. She uses two raisins for eyes and three raisins for buttons for each gingerbread man. If she buys four boxes of raisins, each with 120 raisins in it, how many dozens of gingerbread men can she make?
    6. 6. New World is open Monday through to Saturday from 8.00 am to midnight and Sunday from 10.00 am to 8.00 pm. How many hours is it open in one week?



1. $64.26

2. The 24th house

3. 10,000

4. 528 pies

5. 8 dozen gingerbread men

6. 106 hours


View Problem of the Week Archive (2016/2017)

View Problem of the Week Archive (2015)