What happens when you add three numbers together? Will your answer be odd or even? How do you know?
Look at different ways of dividing things. What do they mean? How might you show them in a picture, with things, with numbers and symbols?
This task offers opportunities to subtract fractions using A4 paper.
When I fold a 0-20 number line, I end up with 'stacks' of numbers on top of each other. These challenges involve varying the length of the number line and investigating the 'stack totals'.
Can you match these calculation methods to their visual representations?
Can you find combinations of strips of paper which equal the length of the black strip? If the length of the black is 1, how could you write the sum of the strips?
Can you find pairs of differently sized windows that cost the same?
