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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

40/100 am I right?

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**SteveB****Member**- Registered: 2013-03-07
- Posts: 530

Right there are two approaches you could use. You could cancel down the fraction which I suggest you do in this case.

You could also do the division 40 divided by 100 to get a decimal which I would do if I were doing a problem like

that and allowed to use a calculator. However most maths students can do this in their head because as it happens

the numbers are nice round figures.

I suggest you cancel down the fraction first. However you may wish to look at what the calculator gives you as well.

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

40/100 10/10 s0 it = 1 am i right?

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**SteveB****Member**- Registered: 2013-03-07
- Posts: 530

No that is not correct.

However the number ten could be used to cancel. Try dividing top and bottom by 10.

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

what should i do then?

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**SteveB****Member**- Registered: 2013-03-07
- Posts: 530

Right. Copy and complete the following:

40 divided by 10 is ...................

100 divided by 10 is .................

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

40 /10 = 4

100/10 = 10 am i right

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**SteveB****Member**- Registered: 2013-03-07
- Posts: 530

Now what could you cancel the fraction (40/100) to ?

Can it be cancelled any further?

Are the numbers both even?

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

yes 20 goes into 100 5 times and into 40 2 so you get 2/5 am i right?

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**SteveB****Member**- Registered: 2013-03-07
- Posts: 530

Yes. That is correct.

Now let us go back to the original question: Calculate 40 % of 60.

Can you see what to do next ?

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

can you see what to do next? no i carn't

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**SteveB****Member**- Registered: 2013-03-07
- Posts: 530

We have to multiply the fraction that you gave in post #734 by 60.

I will give you a minute or two to try that.

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

not sure?

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**SteveB****Member**- Registered: 2013-03-07
- Posts: 530

I would do the following:

(60 x 2) divided by 5.

For speed you may wish to use your calculator. However because the numbers are quite round you may be expected

to be able to work that out in your head. (Not sure about this - it depends upon the style of the course)

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

i am finding it hard to do could you leave me some to do for tomorrow and i will come back on here at 2.00pm tomorrow if ok with you?

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**SteveB****Member**- Registered: 2013-03-07
- Posts: 530

I will not be able to do that at that time tomorrow. How about in the evening ?

Some more questions for you to try:

(1) Calculate 70 % of 90

(2) Calculate 30 % of 70

(3) Calculate 20 % of 150

(4) Calculate 10 % of 170

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

ok what about 7.00pm then any good?

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**SteveB****Member**- Registered: 2013-03-07
- Posts: 530

Yes that would be a better time.

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

see you then? by

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**mathgogocart****Member**- Registered: 2012-04-29
- Posts: 1,426

Steve,thanks.

1.whats 90% of 190

2.80% of 150

3. 20% of 56

Hey.

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

Hi mandy here just wondering how people think I am doing with my maths so far? Leave me a message I will get back soon?

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

Hi steveb mandy here. Just to say sorry I can't make it on here tonight will you be around tomorrow? Send me an email please to let me know?

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**SteveB****Member**- Registered: 2013-03-07
- Posts: 530

*Last edited by SteveB (2013-03-23 08:08:17)*

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**SteveB****Member**- Registered: 2013-03-07
- Posts: 530

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**mandy jane****Member**- Registered: 2010-09-23
- Posts: 882

Hi steveb mandy here. 70 percent of 90 is

*Last edited by mandy jane (2013-03-25 02:33:42)*

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