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20 Cards in this Set
- Front
- Back
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Quotient
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the answer to a division problem.
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Product
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the answer to a multiplication problem.
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Decimal Point
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the dot used to seperate the ones place from the tenths place.
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Formula
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an equation that states a fact or a rule expressed by symbols.
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Hundredths
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the second number to the right of a decimal point.
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Round
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to estimate a number to the nearest ten, hundred, thousand, etc.
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Estimate
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an answer that is close to the exact answer or to make a guess.
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Standard Form
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a number written with one digit for each place value.
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Expanded Form
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a way to write numbers that shows the value of each digit.
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Perimeter
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the distance around a closed figure.
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Area
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the number of square units needed to cover a surface.
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Equation
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a number sentence that uses the equals sign to show that two amounts are equal.
ex: 2x3=6 or 4x4=16 |
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Expression
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a mathematical combination of numbers, operations, and variables.
ex: 2+3= x or 2+x=5 |
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Whole Numbers
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the set of numbers and zero.
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Compatible Numbers
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pairs of numbers that can be computed mentally.
ex: 23+27 is close to 25+25, so the estimate is 50 |
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Array
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an arrangement of objects in equal rows and columns.
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Commutative Property
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a property of addition or multiplication where the sum or product stays the same when the order of addends or factors is changed.
ex: 4+3=7 or 3+4=7 8x2=16 or 2x8=16 |
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Associative Property
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a property of addition or multiplication where the grouping of the addends or factors does not change the outcome of the operation
ex: 4+(3+8)=15 (4+3)+8=15 or (8+4)+3=15 (2x4)x3=24 2x(4x3)=24 or (4x3)x2=24 |
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Identity Propert of Multiplication
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the property which states that the product of 1 and any factor is the factor.
ex: 8x1=8 |
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Identity Propert of Addition
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the property which states that the sum of any number and zero is that number.
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