Submit solutions by Friday October 5th to tubbsjac@nbed.nb.ca

Problem of the Week for October 1st 2007
Grade 6

Rectangles
The figure below is composed of congruent squares. How many rectangles are in the figure?
Hint: Remember that a square is also a rectangle

Grade 7

Kilometre Long Train
How long will it take a kilometre-long train going 20 kilometres per hour to get completely through a 2-kilometre-long tunnel?
Grade 8


Middle Number
If the consecutive odd counting numbers are arranged as shown, what will be the middle center)number in the 11th row?

Grade 9 ( I was told last week’s was too easy so try this)

How Many Pairs?
For how many pairs of positive integers (x, y) is x + 2y = 100?

Grade 10

Find the sum of the digits of the standard form of 2^2999 x 5^3002 (two raised to the 2999th power times 5 raised to the 3002nd power).