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"Lower Secondary"
The Towns A, B, C, D, E, F, G, H all lie on the same straight road.
The table shows the distances between pairs of towns.
For example, D is 19 km from G.
Fill in the distances between all the other towns in the table.
Click here to download the […]
Ask a friend to hide a 5c coin in one hand and a 10c coin in the other without showing you which coin is in which hand. Then say to your friend:
“Multiply the amount of money in your left hand by 2 or 4 (whichever you like) and the amount of money in […]
Choose your number to start and shade it on the grid.
To go to another number you can either MULTIPLY BY 2 or SUBTRACT 5.
So if you start on 12, you can either shade 12 x 2 = 24 or 12 – 5 = 7
Choose any shaded number and carry on until […]
Click here to download the COUNTING TRIANGLES worksheet.
Click here for the Notes for Teachers.
Click here to download the COUNTING TRIANGLES poster
Seven squares are drawn inside each other. The centre points of each side of the outer square are joined to make a smaller square inside it and so on.
The centre square has the area of 1 (one) square unit.
Draw the diagram. You can download square dotty paper here.
What is […]
In how many ways can you fit all three pieces together, edge to edge, to make shapes with line symmetry?
The first of these examples shows a symmetrical arrangement, the second is not allowed because the pieces are not placed edge to edge and the third is not symmetrical.
In how many ways can you half cover one big square using two smaller yellow squares as in diagram A.
What are the similarities and differences between the patterns?
Suppose you half cover four big squares by half covering each square as in diagram B.
Diagram B is unchanged when you rotate […]
Start with the set of the twenty-one numbers 0 – 20.
Can you arrange these numbers into 7 subsets, each of three numbers, so that the totals of the three numbers in each subset make seven consecutive numbers?
For example, one subset adding up to 27 might be {0, 13, 14}. […]
Which of the following products are close to 1368:
20 x 40 20 x 50 20 x 70
40 x 50 40 x 70 or 50 x 70?
In these three multiplication sums, using the digits 1 to 8 once and only […]
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