The Main Challenge
From the numbers 1-20, eliminate all:
- square numbers
- prime numbers
- triangular numbers
- multiples of 6
When adding together the numbers that remain, what is your total?
The 7puzzle Challenge
The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.
The 1st & 4th rows of the playing board contain the following fourteen numbers:
2 3 9 10 14 15 22 32 35 40 44 54 60 72
From this list, what is the sum of the multiples of 8?
The Mathematically Possible Challenge
Based on our best-selling arithmetic board game.
Using the three digits 2, 6 and 9 once each, with + – × ÷ available, which are the only TWO numbers it’s possible to make from the list below?
5 10 15 20 25 30 35 40 45 50
#5TimesTable
The Target Challenge
Can you arrive at 142 by inserting 4, 9, 10 and 13 into the gaps on each line?
- ◯×◯+◯×◯ = 142
- ◯×◯+◯×√◯ = 142
Answers can be found here.
Click Paul Godding for details of online maths tuition.
