I like this one.... think of a number multiply by 2 add 12 subtract 4 divide by 2 subtract the number you thought of and the answer is 4 it always works its a mathematical certainty once you have the number 4 you can add subtract etc to your hearts content and make any new number provided you remember the answer yourself.
the number was 340
think it 63
94 i think
it's the number you subtract it by a 100 then divide it by 100 i think
I think subtract.
always a negative number. just think about going backwards on a number line.
You will get a positive integer. If you subtract a negative number, you will be adding it. I think of it like 2 minuses equals a plus. :P
If n is the number of nickels and d the number of dimes, then the equations are:n + d = 160 (total number of coins) 5n + 10d = 1050 (total value). And I have thought through to the answer.
It means you get the highest and the lowest number then subtract the lowest from the biggest i think?
n-25r=17 I think. I did this a while ago.
You cannot subtract inches from centimeters ... i think