Sum, Difference and Product

F1: Two integers
F2: Two small decimals (up to 2)
Two small numbers are generated, their sum, difference and product are worked out.
Hide the two numbers, can you work out what they are from their sum, product and difference?
Click on 'change' to generate two more numbers.
Hide the product, work out the two numbers from their sum and difference.
Hide the odd or even labels: is it possible to say whether a sum, product or difference will be odd or even?

F3: Doubles and halves

F4: Multiplication facts

F5: Powers and roots

F6: Highest common factor

F7: Lowest common multiple