Free Primary School Maths Help - You Post I Solve!

[ET-PH]

[quote]Mrs Lim bought 7/8kg of flour. She used 4/7kg of it to bake a cake and 3/8kg to make muffin. How much flour Mrs Lim is left with?? [/quote]
Hi, I have seen a similar question before, is simply just 7/8 - 4/7 - 3/8, but we can't minus, not sure if there is a error in the question.

[pecalis]

moonee:

I need the solution for this question....


Mrs Lim bought 7/8kg of flour. She used 4/7kg of it to bake a cake and 3/8kg to make muffin. How much flour Mrs Lim is left with??

Anything near will help.

There should be a mistake in the qn in the 2nd line:
She used 4/7 of it i.e. 4/7*7/8=4/8=1/2kg to bake a cake and 3/8kg to make muffin
So total used = 4/8+3/8=7/8kg.
Ans: All flour used up, so no flour left.

Or She used 4/7kg (no such thing as 4/7kg of it) That's why can't do 7/8-4/7-3/8 (will get negative ans)
HTHs

[teachingmum]

sktwo2:

Hi, I need help in solving this question by using bar drawing method.

4 packets of biscuits and 3 packets of chips = $13.10
6 packets of biscuits and 12 packets of chips = $35.40
a) what is the price for a packet of chip?

Thanks in advance

Hmm... I won't use models for such questions.... can use symbols or tables

By using symbols.... (Please note that there are many variations to this mtd... easier to get rid of B first)

4B 3C -> $13.10
6B 12C -> $35.40
12B 9C -> $39.30
12B 24C -> $70.80
15C -> $31.50
1C -> $2.10 (Ans)

or

4B 3C ->$13.10
6B 12C -> $35.40
16B 12C -> $52.40
10B -> $17
1B -> $1.70
4B -> $6.80
3C -> $13.10 - $6.80 = $6.30
1C -> $2.10 (Ans)

By using table...


http://postimage.org/image/11vtily2s/

http://postimage.org/image/11quwkgqs/

[moonee]

Hi all, Tks for helping, I will double check with my girl whether theres any error when her school teacher gave her the maths problem. Shes currently in p4… btw, is this a p4 question?

[moonee]

ET-PH:

[quote]Mrs Lim bought 7/8kg of flour. She used 4/7kg of it to bake a cake and 3/8kg to make muffin. How much flour Mrs Lim is left with??

Hi, I have seen a similar question before, is simply just 7/8 - 4/7 - 3/8, but we can't minus, not sure if there is a error in the question.[/quote]
HI! :oops: Sorry, yes , there is an errror in the earlier question,,,,, should be:

Mrs Lim bought 7/8 kg of flour.
She used 4/7 of the flour to bake a cake and 3/10 kg to bake some muffins.
How much flour did she have left?

[mramk]

fridayeducation:

Hello all parents,


After reading through this forum, I realised many parents are teaching their children on their own. Something my parents never had the time to do so when I were young. Therefore, as a form of encouragement to all dedicated parents. I will be providing you help with questions that you have doubts on.

You may post the questions here/PM me or email me and I will try my best to solve it at soonest and post the question/answer here so other parents who have doubts on the same type of questions may help their kids too
(but please give me a day to assist you with your questions in case i do not read my mails)

Have a great day.

Thanks for your offer. Wish to find more and more members like you in this famous forum. I will \"trouble\" you with some questions soon.
Have a nice day!

[titank]

[color=darkblue]Mark has 7 fewer toys than Jane

Simon has 4 more toys than Jane.
If Mark has 15 toys, how many toys does Simon have?[/color]

[size=24

[corneyAmber]

titank:

[color=darkblue]Mark has 7 fewer toys than Jane

Simon has 4 more toys than Jane.
If Mark has 15 toys, how many toys does Simon have?[/color]

[size=24

M-[]
J--[]xxxxxxx
S-[]xxxxxxxoooo

Mark = 15
Jane = 15+7 = 22
Simon = 15 + 7 + 4 = 26