The Main Challenge
. . . will get you thinking of the 5- and 7-times tables, plus some addition.
What is the total of the first SEVEN whole numbers that have a 5 or 7 as part of their number or are multiples of 5 or 7?
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 5th & 7th columns contain the following fourteen numbers:
5 8 9 11 14 18 24 25 28 32 44 50 66 84
Can you find four different numbers that have a sum of 100?
The Factors Challenge
Which of the following numbers are factors of 328?
2 3 4 5 6 7 8 9
The Mathematically Possible Challenge
Using 5, 6 and 12 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 328 by inserting 1, 2, 3, 4 and 5 into the gaps below?
- (◯²+◯²)×(◯+◯)×◯ = 328
Answers can be found here.
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