The Main Challenge
An 11-step number trail involving all four arithmetical operations.
Start with the number 8, then:
- multiply by 5
- 25% of this
- –5
- add twenty-two
- 1/3 of this
- ×4
- subtract twenty-four
- +9
- divide by 7
- add three
- ÷3
What is your final answer?
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 2nd & 5th columns contain the following fourteen numbers:
2 8 10 11 14 16 18 25 33 44 45 48 70 84
What is the lowest prime number you can make by adding three different numbers from the list?
The Factors Challenge
Which FOUR of the numbers below are factors of 357?
3 5 7 9 11 13 15 17 19 21 23
The Mathematically Possible Challenge
Using 4, 8 and 12 once each, with + – × ÷ available, which FOUR numbers is it 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 357 by inserting 4, 5, 7, 8 and 9 into the gaps below?
- (◯+◯+◯)×◯×√◯ = 357
Answers can be found here.
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