The Main Challenge
Your task is to arrive at the target answer of 7 in all four lines by inserting the numbers 0.5, 0.5, 2 and 3 once each.
[ Note: Lines 2 & 3 contain two different methods of arriving at 7 ]
- (◯×◯)+◯+◯ = 7
- (◯×◯)+(◯÷◯) = 7
- (◯÷◯)+(◯×◯) = 7
- (◯–◯)÷◯+◯ = 7
The 7puzzle Challenge
The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from 2 up to 84.
The 2nd & 7th rows contain the following fourteen numbers:
4 8 11 17 24 27 28 30 48 55 63 64 70 77
What is the sum of the multiples of 5?
The Factors Challenge
Which of the following numbers are factors of 275?
3 5 7 9 11 13 15
The Mathematically Possible Challenge
Using 2, 7 and 10 once each, with + – × ÷ available, which FIVE numbers is it possible to make from the list below?
3 6 9 12 15 18 21 24 27 30
#3TimesTable
The Target Challenge
Can you arrive at 275 by inserting 3, 3, 5, 6 and 6 into the gaps below?
- ◯²×(◯×◯–◯)÷◯ = 275
Answers can be found here.
Click Paul Godding for details of online maths tuition.
