1 out of 3
To make porridge, Goldilocks mixes oats and wheat bran..... what percentage of the mix is wheat?
2 out of 3
What percentage of this orange drink is juice?
2 out of 3
Equal circles can be arranged so that each circle touches four or six others. What percentage of the plane is covered by circles in each packing pattern? ...
2 out of 3
Prove that the shaded area of the semicircle is equal to the area of the inner circle.
2 out of 3
How much more antifreeze is needed to make the proportion 30%?
2 out of 3
What is 50% of 2007 plus 2007% of 50?
2 out of 3
If the base of a rectangle is increased by 10% and the area is unchanged, by what percentage is the width decreased by?
3 out of 3
Last year, on the television programme Antiques Roadshow... work out the approximate profit.
In this article, Alf outlines six activities using the Gattegno chart, which help to develop understanding of place value, multiplication and division.
