Hi Guys

Below are two additional revision sheets that you can use along side your textbook and notes.

Please attempt questions and ask for help with difficulties.

Blue Course (Block E) – Revision 1

Blue Course (Block E) – Revision 2

Blue Course Revision Booklet -Block E

Mr Mac

### Like this:

Like Loading...

*Related*

Hi, can you help me on BE1.6 on the revision please. Thank You

Hi,

I was just how you would do 6 divided by 2/3.

Hi Jodie

6 changes to 6/1

And then you flip and multiply by 3/2

So 6/1 x 3/2 = 18/2 = 9

Or 6/1 x 3/2 = 3/1 x 3/1 = 9

Ok,

Thank you.

Hi mr macintyre I am stuck on revision paper 1 question 3 b I am not sure if x = 2.25 Or 2 1/4

They are the same Kayleigh. What’s the question?

5x-10_>8-3x

8x _> 18

So x is greater than or equal to 2 and a 1/4

ok thanks

Hi I am stuck with the sum when you have to work out the percentage that’s equivalent to 7/50 ?

Multiply the top and bottom number by 2 Jenijo.

Giving 14/100 = 14%

Hi can you also please help me with

3. calculate the area of a rectangular floor which is 7 1/2 metres long and 5 1/3 metres wide.

4.Pippa has a weekly piano lesson which lasts 1 1/4 hours. If she sat her first examination after a total of 25 hours of piano lessons, how many lessons had she needed?

I completely forgot how to do these…

Q3 is the area of a rectangle so length x breadth. Multiply the 2 fractions Jenijo.

Q4 is divide the total number of hours by the length of time for one lesson. So divide the 2 fractions.

Thank you for getting back to me will work on that now.

hi Mr MacIntyre i was just wandering how you would divide a whole number with a fraction cause i am stuck on 6 times 3/4

Change the whole number to 6/1

So 6/1 divide by 3/4

how would you do Q.4 because I only know how to divide two fractions but the sum is 1 and 1/4 then 25 so I don’t know how you would do that ?

Question 4 from which exercise Jenijo?

how do you change 121/2 % into a fraction? (revision booklet- fractions and percentages 3. d) )

12.5/100 which changes to 125/1000 then simplify.

OR

Double them and you get 25/200 and then simplify.

Hi,

See for the questions; -5(5x+4)+6x

I know it goes to -25x -20+6x

Would you signs change if you move them to the other side

No Jodie, very good question but the signs only change within an equation not an expression.

This question is an expression because we are not trying to “solve”

Ok,

Thank you

Hi, how would you find the median number of goals scored what would it be ?

The median is the middle value of an ordered list Jenijo.

It can also be found from a cumulative frequency table but I don’t think you have done that.

so would it be 1 ? and BE0.3 about the piano lesson question.

What question is the median one Jenijo?

Divide 25 by the time taken for 1 lesson.

Hi,

How would you do x/5=10

Multiply both side by 5

x = 50

Ok,

Thank you,

What would you do for x/-6 =3/2.

Multiply each side by -6 first Jodie

bc3.1 q 2. (c)

Ok Jenijo, that should be ok. Reorder the list and pick the middle number.

the middle number is one. Can you please help me with BE0.3 Q.1 (A) 6x 3/4 because I know how to divide two fractions but I don’t remember how you would do a whole number and a fraction ? Thanks.

Change 6 to 6/1 then multiply as usual.

Or simply multiply the 3 by 6 and you get 18/4

Thank you Mr. Macintyre.

See on BE1.3 Q.3 (A) -10/5 would it be -2 ?

Yes

I am struggling with BE1.4 when you have to solve the equations… I cant find explanations in the textbook is there a page that explains how to do it ?

Hi Jenijo

You have notes on these questions. We did this very recently. Come and see me tomorrow of still unsure.

ok thank you

ok I will come at lunch then because I have wrote down everything I am not sure about. Thank you.

Two dice are thrown. What is the probability that:

(a) The probability that the sum of the two dice is 7.

sorry Mr. Macintyre how would you work this out ?

Work out the number of possibilities for making 7 in a dice and then the total possible outcomes.

From there create a fraction.

so would it be 6/12 ?

I’d need to work through it Jenijo, I can do that tomorrow for you.

Use a calculator to find the values of the following, round your answers to 2 decimal places.

ā65 (b) ā3 (c) ā16 (d) ā24 (e) ā2 I have tried to do this but I just cant get it to work because I know how to do the square root questions without the calculator but I cant seem to find the formulae for this ?

You can only do these WITH a calculator Jenijo.

Round the answers to 2 decimal places

sorry to make my last question clearer. when I am typing in calculator

root 65 = the answer it is giving me is :- root 65 on the calculator

root 3 = the answer it is give me is :- root 3 on the calculator

root 16 = the answer it give me is :- root 4 on calculator ( I know this is right why does it give me the answer for this one but not the others)

root 24 = the answer it gives me is 2 root 6 ( I don’t know how to set this out ) as the answer does not look familiar.

hope that makes a bit more sense.

Ah I see yes, there should be a button on your calculator that either says “change” or “s-d” it’s on the right hand side near the AC button. If you hit that then it should give you a decimal.

If not then it must be a calculator I am unfamiliar with. I would be able to work it out in person.

Let me know if that helps.

Hi Mr MacIntyre

Thank you for getting back. thats what I needed to do…have pressed the sd button now and its working out in decimal places thanks very much.

Hi,

I noticed that the Blue Course – Block E revison is missing a question 2, is that supposed to happen?

No Kyle, show me tomorrow if it’s confusing you.

I forgot to add, it’s the revision 1 sheet, not the booklet. It just goes straight from Q1, which is solving the equations with brackets, to Q3, solving inequalities.

Ah that’s a mistake Kyle. Don’t worry about it.

Hi mr macintyre what is a prime number

A number that has only 2 factors! It also cannot be divided by anything other than 1 or itself.

Okay thank you

Hi,

How would you make 12 and 1/2% into a fraction?

Yeah, change that to 12.5/100 then 25/200 then 1/8.

Ok, thanks.

Hi,

See for 1/2x-1=1/5x-4,

I know you said times the bottom by the bigger number

I know it’s five but I’m confused about what would happen to the 2

And what the outcome would be,

Could you please help me.

Ok Jodie, this is a particularly difficult one as you would need to multiply by 10.

What you want to do is to multiply by 10 then simplify each fraction.

10/2 will change to 5 and 10/5 will change to 2.

Ah ok,

Thank you.

Hi I am having trouble with probability it is BE2.3 question 1 b) what does it mean by square numbers?

The square numbers are 1,4,9,16,25,36,49…

what does it go up in?

never mind I got it.

How would you put 12.5% into an equivalent fraction

12.5/100

Then Multiply top and bottom by 2

25/200 and simplify

Okay thank you

Hi

how do find all the square roots of 9?

There is only 1 square root of 9 Kirsty.

It’s 3

Hi

I am struggling a bit with be1.4 question 4

Can you be more specific Abbey? What is the question exactly?

I am struggling with be1.4 as well

Ok Ciaran

What question exactly?

Never mind I’ve got it

also question 5 on be1.4

never mind I figured it out

Q4 and 5

Well you need to multiply all terms by the bottom number of the fraction. We covered this today in class if you remember.

Oh yeah I remember now Thankyou

x/5 = 10

Multiply by 5

Giving x = 50

ok thanks i was wondering what would i do on q5 and six as well not a specific sum

It’s very similar but you must choose the number you multiply by very carefully. Make sure it’s a multiple of the 2 denominators.

hello

for BE4.6 its asking you to find the square roots of negative numbers, but negative numbers don’t have a square root, so would I change the negative to a positive and then find the square root of that?

No Kirsty

You are correct, negative square numbers do not have roots. Ignore this please.

Hi Mr. Macintyre I was just doing BE1.4 Q4 (b) I know that x/5=10 is x=50 because you multiply by 5 but on (b) its 6/x= -2 so if x is on the bottom what do you do ?

Multiply by x and you get

6 = -2x

Then. x = 6/-2 = -3

I got confused at 5 1/2 – 2 3/5

I done 5-2=3

then I done 1/2 – 3/5

I got 5/10 – 6/10

= -1/10 and was just wondering if that is right so would the answer be 3 -1/10 because I haven’t seen negatives in this type of sum before

You need to borrow from the whole numbers. 1 = 10/10

Making it 15/10-6/10

Thank you

oh ok I thought it was 6/x= -2

x= -2 times 6

so x= -12 ?

hi

i was wondering for bc3.2 q1 what does the part tally mean does it mean the same as mark

Tally Marks are what u use to mark down a selection.

It’s just a straight line. See ur notes

oh ok thnk you

if it was 1/3 x+2=1+1/4x would you be multiplying by four because its the bigger number ?

No you would need to multiply by 12 to allow for cancellations.

oh yeah I remember now. I am just going over the equations right now, I know how to do the longer ones but see if its just 5x= -15 do you just do – 15 takeaway 5 ?

No no it’s -15 divided by 5

you know how when you bring a negative over to the other side it becomes a positive does that mean if you bring a positive over to the other side it becomes a negative ?

Yes

so it would be x = – 3 ?

sorry for asking so many questions ! but see on BE1.4 Q 4. (e) 10+2/3x= -8 how would you do that because I can do a, b, c and d but I cant do e or f ? thanks.

Subtract the 10 first

what would you do for the square root of negative 9?

It’s not possible

ok thankyou.

15-3(x+2)=5x+1 would it be

15-3x-6=5x+1

what would you the do when gathering the like terms because I didn’t know if because their isn’t a sign infront of the equals sign if it would be 3x – 5x or 3 x +5x .

Deal with numbers on LHS first

9-3x because 15-6=9

ok. Thank you

Evaluate the following expressions, given that

m = 3 n = 5 p = 6 q = -2 r = -3 t = -6 v = -10

h) mnv/(t+r-p) that gave me 3x5x-10/-6+-3-6 I am confused about what the signs would be on the bottom bit because its 6+-3 would this just become 6- 3 ?

-6-3-6 so -15

Hi,

How would you do,

6+3x/7=2+x/5

For BC3.1 Q3. (b) it asks the median of the stem and leaf diagram, is it 57 ?

Hi Jenijo. I am actually out tutoring and I can’t access the blog. I will have a look shortly.

Ok thank you.

In fact I got it. Yes it’s 57. Well done! Great effort today with study too.

Thankyou !

I was just doing this question and i know how to add a cumulative frequency column but i am unsure on finding the median of when its in a table…

Terry records the number of cars he sells in the 1st week of June.

Day Frequency

Mon 3

Tue 2

Wed 5

Thur 6

Fri 4

Sat 10

Would you add the frequency up which would be 30 then divide by 6 cause there is six days ?

oh wait never mind I think you use that formulae for the ,mean ! … but I don’t know how to find the median of that table.