Q&A - P4 Math

[chloecube]

esj152104:

Hi,


Need someone to help to solve this P4 Math for my son.

Gina and Gary arranged a number of chairs equally into 12 rows and were short of 36. When they re-arranged them into 7 equal rows, there were 229 chairs left. How many chairs were there in all?

Thanks so much

229+36=265
12-7=5
265/5=53
53x12=636
636-36=600

Sorry, I can't draw the model.

[Sharmum]

Hi,


Need help on this 2 questions:-

1) Jill and Kim went shopping with the same amount of money. After Jill spent $600 and Kim spent $56, Kim had nine times as much money left as Jill. How much were they left with altogether?

2) When Ginny buys 3 kg mangoes, she will have $7 left. However, she will need $13 if she buys 5 kg of mangoes. How much money does she have?

Many thanks!

[smartmummy]

Sharmum:

Hi,


Need help on this 2 questions:-

1) Jill and Kim went shopping with the same amount of money. After Jill spent $600 and Kim spent $56, Kim had nine times as much money left as Jill. How much were they left with altogether?

2) When Ginny buys 3 kg mangoes, she will have $7 left. However, she will need $13 if she buys 5 kg of mangoes. How much money does she have?

Many thanks!

1)
[][600]
[]...[][56]. 9units
So 8u=600-56=544
u=544/8=68
9u+1u=10*68
Ans=680

[smartmummy]

2)

[][][][7]
[][][][][]{13}. { -dotted lines in the model
2kg=$20
310+7=$37
Ans $37
Checking 510-13=$37

[Sharmum]

[quote=\"smartmummy\"]2)


Hi Smartmummy,

Thanks for your help !!!

Else i really not sure how to work out.... :?

[smartmummy]

Sharmum:

smartmummy:

2)


Hi Smartmummy,

Thanks for your help !!!

Else i really not sure how to work out.... :?

U r welcome!
Last year, I just stared at the qns and answers, I think unconsciously I absorbed. luckily, last year, my son no need to solve this type of qns. Now I can do some qns.it's time to give back to the KSP community!

[smartmummy]

Just curiously want to know relations to this number pattern

2,3,6,18,_,1944
And:108

[mathfreak]

smartmummy:

Just curiously want to know relations to this number pattern

2,3,6,18,_,1944
And:108

Solution:
Notice that 2x3=6, 3x6=18, and so on. Hence the missing number is equal to 6x18=108. Just to be sure, we check: 18x108 is indeed equal to 1944.

[Champion]

smartmummy:

Just curiously want to know relations to this number pattern

2,3,6,18,_,1944
And:108

2*3=6
3*6=18
18*6 = 108
108*18 = 1944

So, answer is 108

Don't know am I right to analyze this way

[smartmummy]

Thanks champ!