Search Results For “adding and subtracting”

Several ways to investigate the relationship between addition and subtraction.

Taking 15, 16, 17 or 18 from 2-digit numbers. The easiest way of doing this is by taking a whole ten and adjusting.

Finding the difference between two numbers as well as making subtraction number sentences from the numbers given.

Here we have some serious 2-digit addition. On the first two pages the answers all come to just more than 100.

Subtraction by decomposition is the way most adults are familiar with and is the way that children will ultimately use for larger numbers. Here is an introductory exploration of the idea.

Progressively harder doubling and halving; from teens, to 2-digit multiples of 5 to 3-digit multiples of 10.

A variety of written questions which need a good knowledge of 2x, 3x, 4x, 5x and 10x tables to answer quickly.

Our third set of tables squares. At this stage we are just looking at 2x, 3x, 4x, 5x, 6x and 10x tables, so not too bad!

A great way to show how multiplication works is by using arrays. 3 rows of 4 means 3 lots of 4. This means 4 x 3 or 3 x 4.

Multiplying whole tens by 2, 3, 4, 5 and 10. Excellent for putting knowledge of tables into practice.

Word questions which are all about dividing money. Some involve dividing odd numbers of pounds, without a remainder. (Split the remaining pounds into pence.)

To find a quarter of a number, just halve it and halve it again! Easy!!