Tips And Tricks To Do The Match Quickly 1 | Page 7

2. Subtract From 1000
• This is the basic rule to subtract any number
that is large enough to be difficult to be
subtracted. The simple rule of subtraction is
that you must subtract all the numbers except
the last one from the 9 and subtract the last
number from 10. Let’s suppose:
• 1000 – 544 =
• Subtract 5 from 9 = 4
• Subtract 4 from 9 = 5
• Subtract 4 from 10 = 6
• The answer is the 456.