
By: thayal (offline) Tuesday, June 09 2009 @ 03:54 AM CDT (Read 2029 times)



thayal 
Hi
Pls could any one of you help me to solve this pri 3 maths problem?
Wendy has 600 more postcards than Steven. If Wendy gives 21 postcards to Steven, she will have 7 times as many postcards as steven. How many postcards does Steven have at first?

Junior
Registered: 04/18/09 Posts: 21





By: tangzhimian01 (offline) Thursday, June 11 2009 @ 06:18 AM CDT



tangzhimian01 
Wendy has 600 more postcards than Steven. If Wendy gives 21 postcards to Steven, she will have 7 times as many postcards as steven. How many postcards does Steven have at first?
Wendy, W  1 Big unit + 600
Steven, S  1 Big unit
Wendy New, WN  1 Small unit + 600  21 = 1 Big unit + 579 > 7 units
Steven New, SN  1 Small unit + 21 > 1 unit
WN  SN

6 units > 579  21 = 558
1 unit > 558 / 6 = 93
S:1 Small unit > 1 unit  21 = 93  21 = 72 postcards
Steven has 72 postcards at first.

Newbie
Registered: 12/31/06 Posts: 4





By: admin (offline) Wednesday, June 17 2009 @ 05:26 AM CDT



admin 
Since this is a Primary 3 maths question, I will move it from Primay 4 forum to Primary 3.
Cheers!

Admin
Registered: 12/31/06 Posts: 56



