Home > Whiteboard Worksheets > Mental methods & rapid recall of number facts
 Choose the topic: Please select ..... A: Applying mathematics and solving problems B: Place value, ordering and rounding C: Integers, powers and roots D: Fractions, decimals, percentages, ratio and proportion E: Number operations and the relationships between them F: Mental methods and rapid recall of number facts G: Calculations: written methods H: Calculations: calculator methods I: Calculations: checking results J: Equations, formulae and identities K: Sequences, functions and graphs L: Geometrical reasoning: lines, angles and shapes M: Transformations N: Coordinates O: Construction & loci P: Measures and mensuration Q: Statistics R: Probability F: 1 2 3 4 5 6 7 8
 Consolidate the rapid recall of number facts 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 F8: Play Darts 'Throw' three darts by clicking on the screen or interactive whiteboard. The scores will be recorded on the blackboard. Click on the question marks to reveal the scores.

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