Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

|
Options

JayWalker
2006-02-09 05:20:35

Yay!!!! I've got it.

Cool. Thanks a million!!!!!!!

kempos
2006-02-09 01:04:41

to simplify means to divide denominator and denominator by the same number :-)

justlookingforthemoment
2006-02-08 21:24:19

In the same way as before. Just this time it's with fractions.

Multiply the numerators (the numbers above the line) together and the denominators (below the line) together, like this:

Which can then be simplified as shown above. So, 2/3 of 7/9 equals 2/21.

JayWalker
2006-02-08 20:24:41

Thank you Winked. I understand now!!!

I have one more question actually, and then I'm through hopefully.

How does one calculate 2/3rds of 7/9ths?

justlookingforthemoment
2006-02-08 19:49:20

#### JayWalker wrote:

I don't understand why one has to multiply the two percentages, but I will take your word for it!!!

You multiply the two percentages together because when you see of, as in 1/2 of 20, it is the same as multiplying. So 1/2 of 20 is the same as 1/2 x 20, which equals 10.

JayWalker
2006-02-08 18:50:35

Thank you so much everyone!!!!

I don't understand why one has to multiply the two percentages, but I will take your word for it!!!

I really shouldn't be helping my son. As he told me yesterday: "Mom, I'm capable of making mistakes all by myself!!" - LOL!!!!

It's very frustrating though not to be able to help him. Maths causes him quite a lot of problems at school - it's really the subject where he struggles the most, and he just cannot STAND his teacher who he has had unfortunately for two years now. If he has him next year, it's going to be a disaster!!!!

kempos
2006-02-08 17:20:54

7% of 9% = 7/100 of 9/100 = 7/100 * 9/100 = 63/10000

Ricky
2006-02-08 08:19:21

I'm a Mum trying to help my son with his maths homework, and I'm not much of an Einstein.

And it's a good thing too.  Didn't he fail math?

mathsyperson
2006-02-08 06:08:26

Convert the percentages into decimal numbers by dividing by 100.

"Find 0.07 of 0.09"

Then just multiply the two together. 0.07x0.09 = 0.0063

Then multiply by 100 to convert back into a percentage:

"7% of 9% is 0.63%"

A quicker way would be to just multiply the 2 percentages together, then divide by 100.

JayWalker
2006-02-08 05:33:28

Can someone please help me?? I'm a Mum trying to help my son with his maths homework, and I'm not much of an Einstein. I just CAN'T figure out how to calculate 7% of 9%.

Doesn't even make sense to me!!!!

I'd be eternally grateful if someone could explain this to me. Many thanks in advance!!!!