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I am struggling to guide my daughter with this question:

If 12 is subtracted from 1/10 of a certain number and the answer is 13 what is the number?

Can anybody help?

Thanks

Polly

polly0494 wrote:I am struggling to guide my daughter with this question:

If 12 is subtracted from 1/10 of a certain number and the answer is 13 what is the number?

Can anybody help?

Thanks

Polly

Hi,

Try drawing a function machine or a sum with an empty box.

The trick is to work from back to front, in this case.

So, 13 equals (a number divided by ten) minus 12.

So 13=25-12, so 13=250/10-12. So 250?

Did I get the right answer?

Where is G55 when you need some maths help.

steve

You need to reverse the proceedure - 12 +13 = 25

25 is 1/10 of the number thus the number must be 250.

hope this helps

Emma

Thanks for the quick replies!

It's been a bad day at the office and I could not explain it!

polly0494 wrote:I am struggling to guide my daughter with this question:

If 12 is subtracted from 1/10 of a certain number and the answer is 13 what is the number?

Can anybody help?

Thanks

Polly

There is another approach

We do not know what the number is, so make it as X

(1/10 of X) -12 = 13

(1/10 of X) = 25

Therefore X = 250

Hope this helps

Thanks everybody for your replies.

Ny daughter and I have worked through it using the suggested methodologies and seems to get it! I am going to write a few more like this for her later and see if she can work them out!

Thanks again,

Polly