Search Results For “doubling and halving to 20”

If it?s been a cold winter everyone will be used to using negative numbers!

It is important to be able to say decimal numbers correctly and recognise the value of digits.

Converting fractions to decimals might need the aid of a calculator.

Working with simple percentages and converting fractions to percentages.

More on percentages, decimals and fractions.

Knowing pairs of numbers that make 10 and being able to count in tens make these questions much quicker to answer.

In these questions, you are told one fact about a sum. Write down three others without doing any more calculating.

Given one fact helps with working out similar facts.

Pencil and paper method for subtracting crossing the tens boundary.

Some people (especially those who still use feet and inches!!) think it is important to know how to multiply by 12. It?s easy ? just add 10 times the number to 2 times the number.

Knowing multiplication tables really helps with fractions.

An introduction to square numbers and the number patterns associated with them.