Odd and even numbers

I added together some of my neighbours' house numbers. Can you explain the patterns I noticed?

How many legs do each of these creatures have? How many pairs is that?

Use cubes to continue making the numbers from 7 to 20. Are they sticks, rectangles or squares?

Ben's class were cutting up number tracks. First they cut them into twos and added up the numbers on each piece. What patterns could they see?

Can you find the chosen number from the grid using the clues?

These red, yellow and blue spinners were each spun 45 times in total. Can you work out which numbers are on each spinner?

Each child in Class 3 took four numbers out of the bag. Who had made the highest even number?

Can you sort numbers into sets? Can you give each set a name?

Find the sum, f(n), of the first n terms of the sequence: 0, 1, 1, 2, 2, 3, 3........p, p, p +1, p + 1,..... Prove that f(a + b) - f(a - b) = ab.