The Main Challenge
Your task is to make the four lines below work out arithmetically.
Simply place the digits 0 to 9 into the 16 gaps, but each digit must only be inserted a maximum of twice in the whole challenge.
◯ + ◯ = 12 = ◯ + ◯
◯ + ◯ = 1 = ◯ – ◯
◯ + ◯ = 5 = ◯ × ◯
◯ + ◯ = 2 = ◯ ÷ ◯
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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 1st & 5th rows contain the following fourteen numbers:
2 6 7 9 14 15 16 21 22 40 50 72 81 84
What is the sum of the multiples of 8?
The Factors Challenge
Which FOUR of the following numbers are NOT factors of 264?
2 3 4 5 6 7 8 9 10 11 12
The Mathematically Possible Challenge
Using 3, 7 and 9 once each, with + – × ÷ available, which are the FOUR numbers it is 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 264 by inserting 2, 4, 6, 7 and 9 into the gaps below?
- (◯+◯)×(◯+◯)×√◯ = 264
Answers can be found here.
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