The best, free Interactive Whiteboard Resources

Regularly updated to save you time!

Addition and Subtraction


A versatile way of generating random numbers which is excellent for use right through the primary school. Spin the numbers and choose the required calculation. Great for starter and plenary sessions. It also provides the answers to the calculations.

Triangular Cards

A clever resource which is great for demonstrating inverse operations. Click on the words to see the sums. Useful for mental maths starters or plenaries.

Addition of 2 and 3 Digit Numbers

A useful teacher demonstration tool for demonstrating how units or tens are regrouped in addition sums with carrying.

Expanded Addition

A teaching tool which demonstrates expanded addition of large numbers including decimals.

Bingo - Addition

Excellent for whole class addition mental maths. Levels are progressive from single digit addition to decimal addition and HTU and TU addition. It usefully presents sums in different ways.

Dartboard Addition

Use the image of a dartboard to reinforce addition. You can choose to reveal or input the answers.

Magic Squares

Make each row and column add up to the magic number provided.

Calculation Balance

An excellent site for addition, subtraction, multiplication and division practice. Good for learning your times tables. Also it is a useful tool for teachers to demonstrate balancing simple equations.

Horizontal Addition Using Place Value Cards

A good demonstration tool for showing how TU and HTU mental addition can be made easier through the use of place value cards.

Understanding 1000

Excellent for demonstrating addition with carrying. Enter your own numbers but it handles up to 4 digit numbers.

Subtraction on a Number Line

A great tool for teaching finding the difference between two numbers. Useful for showing counting on for bridging tens and up to near multiples of decimals.

Function Machine

The single step function machine adds or subtracts numbers to 10 or you can set your own function. There is also a more difficult 2 step function machine for more challenging examples.

Function Machine

Good for demonstrating how function machines work. It has addition, subtraction, multiplication and division examples.


This website is designed to demonstrate subtraction by the decomposition method. It expands the numbers to aid understanding. Different levels of difficulty including decimals.

Number Facts Grid

A great teaching tool for demonstrating how addition and multiplication squares work.

Temperature Comparison

An interactive whiteboard resource which is useful for teaching the comparison of positive and negative numbers on a number line.

Dartboard Centre Total

Using the image of a dartboard this site is a great teaching tool for teaching and learning number bonds to 100 and 1000 and also multiples of 5 and 10. It also includes decimal number bonds.

Calendar Investigation

An addition investigation where you need to find diagonal totals on a calendar to match a target number.