The Main Challenge
. . . involves number combinations and addition, both necessary to master if players are to successfully complete the fabulous Kakuro puzzle.
As well as 9+8+7+1 (or 9871), list the five other ways of making 25 when adding together FOUR unique digits from 1-9.
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 column contains the following seven numbers:
2 10 16 33 45 48 70
Using these seven numbers exactly once each, with + – × ÷ available to use in your calculation, can you arrive at the target number of 100?
The Factors Challenge
Which of the numbers below are factors of 359?
3 5 7 9 11 13 15 17 19 None of them
The Mathematically Possible Challenge
Using 4, 8 and 12 once each, with + – × ÷ available, which are the only TWO numbers it is possible to make from the list below?
7 14 21 28 35 42 49 56 63 70
#7TimesTable
The Target Challenge
Can you arrive at 359 by inserting 2, 4, 6, 8 and 10 into the gaps below?
- (◯²×◯)–(◯×◯)÷◯ = 359
Answers can be found here.
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