The Main Challenge
This is perhaps a bit trickier than you think! Add these four numbers together and write your answer in words:
- Two hundred and four thousand and nine,
- Seventy thousand, nine hundred and eight,
- Four hundred and fifty thousand and seventy,
- One hundred and seven thousand, three hundred and ninety-five.
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 4th & 5th columns contain the following fourteen numbers:
3 6 8 11 14 18 20 25 42 44 63 72 77 84
How many numbers listed are NOT multiples of 3, 5 or 7?
The Factors Challenge
Which THREE of the numbers below are factors of 351?
3 5 7 9 11 13 15 17 19
The Mathematically Possible Challenge
Using 1, 3 and 9 once each, with + – × ÷ available, which is the ONLY number it is possible to make from the list below?
10 20 30 40 50 60 70 80 90 100
#10TimesTable
The Target Challenge
Can you arrive at 351 by inserting 1, 2, 3, 4 and 5 into the gaps on each line?
- (◯+◯)²×double◯–(◯×◯)² = 351
- (◯–◯)³×(◯×◯–◯) = 351
Answers can be found here.
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