Exploring and noticing

Buzzy Bee was building a honeycomb. She decorated the honeycomb with a pattern using numbers. Can you discover Buzzy's pattern and fill in the empty cells for her?

Make one big triangle so the numbers that touch on the small triangles add to 10.

Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.

How many starfish could there be on the beach, and how many children, if I can see 28 arms?

Use these four dominoes to make a square that has the same number of dots on each side.

Which comes next in each pattern of dominoes?

In this section from a calendar, put a square box around the 1st, 2nd, 8th and 9th. Add all the pairs of numbers. What do you notice about the answers?

Lee was writing all the counting numbers from 1 to 20. She stopped for a rest after writing seventeen digits. What was the last number she wrote?

Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?

Use the 'double-3 down' dominoes to make a square so that each side has eight dots.