Beautiful Binary Numbers

Beautiful Binary Numbers

Trying to nurture an interest in numbers in your children? Why not introduce them to an alternative number system! The number system that we commonly use is known as the decimal system. The prefix dec- comes from the Greek word deka, which means ten. This is why the...
2018 PSLE Mathematics Candle Question

2018 PSLE Mathematics Candle Question

In a shop, candles are sold only in boxes. A box of 7 short candles costs $2.50 and a box of 5 long candles costs $3.20. (a) Dan wants 19 short candles and 3 long candles for his lanterns. What is the least amount of money that Dan will need to spend on the candles?...