Well, darling, 20 take away 13 is 7. Simple math, no need to overcomplicate things. Just subtract 13 from 20 and you've got your answer. Now go show off your subtraction skills, you math wizard, you!
First, subtract 20 and 5. Then take that answer and subtract 13 from it. 20-5-13 15-13 2 The answer is 2
20 minus 14.50 is 5.50
This is a classic riddle that plays on the way numbers are written. If you take away the letter "N" from "NINETEEN," you are left with "INETEEN," which sounds like "TWENTY" when pronounced. So, by removing the "N" from "19," you are left with "20" phonetically.
The amount after the discount is $43.99
20
10
March 20, 2010 is 13 days away as of March 7, 2010
2011 - 13 = 1998
123 minus 13 is 110.
45 minus 13 is 32.
5
First, subtract 20 and 5. Then take that answer and subtract 13 from it. 20-5-13 15-13 2 The answer is 2
20
the answer is $5.20
1.74 - 20% = 1.392
20 minus 14.50 is 5.50
20 minus 9 is 11.