The Main Challenge
One to test your basic adding skills. What is the sum of all twenty-two individual digits when listing all whole numbers from 10-20 inclusive?
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 6th & 7th rows contain the following fourteen numbers:
4 5 11 12 18 20 24 27 30 33 49 56 70 77
What is the difference between the two square numbers?
The Factors Challenge
Which THREE of the following numbers are factors of 304?
4 6 8 10 12 14 16
The Mathematically Possible Challenge
Using 3, 8 and 10 once each, with + – × ÷ available, which are the only THREE numbers it is possible to make from the list below?
11 22 33 44 55 66 77 88 99 110
#11TimesTable
The Target Challenge
Can you arrive at 304 by inserting 1, 2, 3, 4 and 5 into the gaps below?
- ◯⁵+◯⁴+◯³–double◯–◯ = 304
Answers can be found here.
Click Paul Godding for details of online maths tuition.
