Search Results For “missing numbers”

Adding and subtracting numbers that cross the thousands boundary: often ?counting on? is the best method.

Use the numbers in the octagon to create and answer subtraction questions using multiples of 10 and decimals.

More work on doubling and halving, including larger numbers and fractions.

When multiplying 2-digit numbers by 1-digit in your head usually it is easier to start with the tens.

A whole number which only has factors of 1 and itself is known as a prime number.

Understanding and using factors of numbers can make mental multiplication easier.

Practise the written method of short division with some easier 2-digit numbers.

Tips and hints on using a calculator, including negative numbers and recurring decimals.

Binary trees are often used in science, but here we use them to sort numbers.

Find examples to back up general statements about numbers, shape etc.

Mini investigations involving amounts of time, large numbers and, not forgetting, blades of grass!

Estimating and then measuring to the nearest millimetre requires a great deal of accuracy.