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Associative property
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The sum or product stays the same when the grouping of the addends or factors is changed.
EX: (6+4) +2 = 6 + (4+2) or (6x4) x 2 = 6 x (4x2) |
Common denominators
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When two fractions have the same denominator, they are said to be this.
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Commutative property
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The sum or the product stays the same when the addend or factors order is changed.
EX: 6+4 = 4+6 OR 6x4 = 4x6 |
Compatible numbers
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A pair of numbers that are easy to work with mentally.
25 and 70 are compatible numbers for the problem 22 + 73. |
Compensatory numbers
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These numbers are used to adjust numbers in a
computation after use of compatible numbers. |
Compute
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To find a numerical result - usually by adding, subtracting, multiplying or dividing.
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Distributive property
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When one of the factors of a product is written as a sum, multiplying each addend before adding does not change the product. 3 x (4+5) = (3 x 4) + (3 x 5)
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Equivalent
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Having the same value.
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