Use visual models to practice adding and subtracting lengths of objects within 100. Warm up with a Mystery Math Mistake to find the mistake made in counting up on a number line to subtract. Use visual ...

Hello, I’m Mr Smith, and together we’re going to practise subtracting one-digit numbers from one-, two- and three-digit numbers. Finding the difference, taking away, counting up, counting back — these ...

You can add or subtract numbers in lots of different ways. You can use number lines, number bonds, fact families, 10 squares and counters, or even just writing the numbers down. Sometimes it is faster ...