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There are three versions of this challenge. The idea is to change the colour of all the spots on the grid. Can you do it in fewer throws of the dice?
Try grouping the dominoes in the ways described. Are there any left over each time? Can you explain why?
Can you find two butterflies to go on each flower so that the numbers on each pair of butterflies adds to the number on their flower?
Try continuing these patterns made from triangles. Can you create your own repeating pattern?
In this calculation, the box represents a missing digit. What could the digit be? What would the solution be in each case?
Can you each work out the number on your card? What do you notice? How could you sort the cards?
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?
If you have ten counters numbered 1 to 10, how many can you put into pairs that add to 10? Which ones do you have to leave out? Why?
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?
Make one big triangle so the numbers that touch on the small triangles add to 10.
Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Can they make their lines the same length? Can they make any other lines?
These pictures show squares split into halves. Can you find other ways?
In Sam and Jill's garden there are two sorts of ladybirds with 7 spots or 4 spots. What numbers of total spots can you make?
Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?
As you come down the ladders of the Tall Tower you collect useful spells. Which way should you go to collect the most spells?
Dotty Six is a simple dice game that you can adapt in many ways.