Mrs Gardner’s garden has an area 90 square metres with length and width that are both whole numbers. If the length is 2.5 times the width, what is the perimeter of the garden?         

I am thinking of a number.

When I multiply it by itself and double the result, I get 128.

What number did I start with?

Which number below is the odd one out?

5, 13, 72, 73, 89, 109

Catherine is playing with blocks and decides to stack up all the blocks so that each row has one less block than the row below.

There is a total of 55 blocks, and Catherine wants to end up with just one block on top.
How many should she put in the bottom row?

Mary distributed 100 marbles among five bags as follows:

How many marbles are there in Bag 3?

A ferry transports cars and bikes from the mainland to a holiday island.

Last week 48 tyres were transported by the ferry. If there were twice as many bicycles as cars, how many bicycles were ferried to the island?

Remember to type only the number

Listed below are some of the worst bush fires that Victoria and surrounding states have suffered. Vast tracks of forestry, plantation, and farming land were destroyed.

How many hectares of land have been destroyed in the Victorian bush fires? (No spaces or commas.)

Victorian Bush fires: