Find factors and multiples of a number including listing factors in pairs to find all the factors of large numbers. Find common multiples and lowest/least common multiples without the use of the Product of Prime Factors, simple cases only. Find common factors and highest common factor (HCF), including using the term divisor and use given results as an aid.
Recognize and calculate the square number sequence up to 144 and also include simple higher values, e.g. 400, 10000. Understand the square roots as the reverse process of squaring. Only consider positive square roots.