Multiplication Strategies--Use Tens

Explanation of how to use the strategy of Use Tens for x5 and x10 multiplication facts

Multiplication Facts
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Multiplication Strategies--Use Tens

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Explanation of how to use the strategy of Use Tens for x5 and x10 multiplication facts
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  1. Multiplication Strategies—Use Tens

    Slide 1 - Multiplication Strategies—Use Tens

    • for x5 and x10
    • When multiplying by 10, shift the other factor one place value to the left and put a 0 in the ones place
    • For x5 facts, start with the x10 fact and then take half
    • for 4 x 10 think
    • H T O
    • 4
    • 4 0 so 4 x 10 = 40
    • for 16 x 10 think
    • 1 6
    • 1 6 0 so 16 x 10 = 160
    • for 5 x 7 think
    • 7 x 10 = 70
    • half of 70 is 35
    • So 5 x 7 = 35
    • for 5 x 9 think
    • 9 x 10 = 90
    • half of 90 is 45
    • So 5 x 9 = 45