Explain the reasons for changing two-factor multiplication calculations to three-factor calculations
I can explain the reasons for changing two-factor multiplication calculations to three-factor calculations.
Explain the reasons for changing two-factor multiplication calculations to three-factor calculations
I can explain the reasons for changing two-factor multiplication calculations to three-factor calculations.
Lesson details
Key learning points
- Times table facts can simplify multiplication calculations using the factors of a number to make the calculation easier.
Keywords
Array - An array is when items are arranged in rows and/or columns.
Factor - Factors are whole numbers which exactly divide another whole number.
Associative - The associative law states that it doesn't matter how you group or pair values (i.e. which we calculate first), the result is still the same. It applies for addition and multiplication.
Efficient - Working efficiently means finding a way to solve a problem quickly whilst also maintaining accuracy.
Common misconception
Pupils think that the factor that must become the product of two factors is always the largest factor.
Ensure pupils are provided with a range of opportunities to break down factors, identifying where it does make a calculation easier, and also where it doesn't make the calculation easier.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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