The Main Challenge
Test your knowledge of number combinations by listing the SIX different ways of making 20 when adding together five unique digits from 1 to 9 in this Kakuro-style question.
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 & 3rd rows contain the following fourteen numbers:
2 9 13 14 15 22 25 36 40 42 45 66 72 80
Can you find FIVE sets of three different numbers, all of which have a sum of 100?
The Factors Challenge
Which one of the following numbers is NOT a factor of 310?
1 2 3 5 10 31 62
The Mathematically Possible Challenge
Using 4, 7 and 11 once each, with + – × ÷ available, which are the only TWO numbers it is possible to make from the list below?
4 8 12 16 20 24 28 32 36 40
#4TimesTable
The Target Challenge
Can you arrive at 310 by inserting 1, 2, 3, 4 and 5 into the gaps below?
- (◯³+◯–◯–◯)×◯ = 310
Answers can be found here.
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