This blog is managed by Song Hock Chye, author of Improve Your Thinking Skills in Maths (P1-P3 series), which is published and distributed by EPH.

Friday, January 30, 2009

Tao Nan School P5 SA2 2007 Math Q45

Kate has some stickers. If she gives her friends 7 stickers each, she will have 3 stickers left. If she gives them 8 stickers each, she will be short of 6 stickers.

a) How many friends does she have?
b) How many stickers does she have?


The difference in number of stickers is 9. This 9-sticker difference is due to each of her friend receiving 1 more sticker. Hence, she has 9 friends, receiving 1 more sticker each.

Answer: She has 9 friends.

7 stickers to 9 friends ----- 9 x 7 = 63
Add 3 extra stickers ----- 63 + 3 = 66

Answer: She has 66 stickers.

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