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Many of you have had an excellent stab at this problem - it requires a lot of perseverance - and you have come up with several ways, all of which take four steps. Matthew from Gayhurst School suggests:
$1 000 000 \times 7 = 7 000 000$Tom, who goes to The Oratory Preparatory School found a different way which is equally as quick:
$1000000\times77=77000000$Yet another way was discovered by Robert from U-Hill Secondary and pupils from the Sutton Masterclass:
$1 000 000 \times 7 = 7 000 000$Pupils from Moorfield Junior School told us about a fourth way:
$1,000,000\times 7 =7,000,000$Theo, Matthew, Seth and Jessie from Christ Church Primary School went about it in this way:
$1 000 000\div 77 777 777 = 0.0128571$This is interesting. I'm particularly intrigued by the second line. I wonder why the calculator display gives zero?
Fantastic - and to think it looked so difficult!
What do the digits in the number fifteen add up to? How many other numbers have digits with the same total but no zeros?
In the multiplication calculation, some of the digits have been replaced by letters and others by asterisks. Can you reconstruct the original multiplication?