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27 Cards in this Set
- Front
- Back
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Array(s) |
A way of displaying objects in rows and columns. |
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Compatible Numbers |
Numbers that are easy to compute mentally. |
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Dividend |
The number to be divided.
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Divisor |
The number by which another number is divided. |
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Equation |
A number sentence that uses the equal sign (=) to show that two expressions have the same value.
Example: 9 + 3 = 12 |
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Estimate (Estimation) |
To give an approximate value rather than an exact answer. |
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Factor |
The numbers multiplied together to find a product.
Example: 3 x 6 = 18 (3 and 6 are factors of 18) |
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Input-Output Table |
A table that uses a rule to relate one set of numbers to another set of numbers. |
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Inverse Relationship |
Operations that undo each other.
Examples: Adding 6 and subtracting 6; Multiplying by 4 and dividing by 4. |
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Numerical Expressions |
An expression that contains numbers and at least one operation.
Example: 35 + 12 |
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Partial Products |
Products found by breaking one factor in a multiplication problem into ones, tens, hundreds, and so on and then multiplying each of these by the other factor. |
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Perfect Square |
A number that is the product of a counting number multiplied by itself. |
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Place Value:
ones, tens, hundreds, thousands, hundred thousands |
The position of a digit in a number that is used to determine the value of the digit.
Example: In 3,946, the 9 is in the hundreds place. So, the 9 has a value of 900. |
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Product |
The answer to a multiplication problem. |
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Associative Property of Addition |
Addends can be regrouped and the sum remains the same. |
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Associative Property of Multiplication |
Factors can be regrouped and the product remains the same. |
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Commutative Property of Addition |
Numbers can be added in any order and the sum remains the same. |
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Commutative Property of Multiplication |
Factors can be multiplied in any order and the product remains the same. |
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Distributive Property |
Multiplying a sum (or difference) by a number is the same as multiplying each number in the sum (or difference) by that number and adding (or subtracting) the products.
Example: (3 x 21) = (3 x 20) + (3 x 1) |
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Quotient |
The answer to a division problem. |
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Remainder |
The amount that is left after dividing a number into equal parts. |
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Rounding |
Replacing a number with a number that tells about how many or how much. |
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Rule |
A mathematical phrase that tells how numbers in a table are related. |
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Sequence |
A set of numbers that follows a pattern. |
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Strip Diagram |
A tool used to help understand and solve word problems. It is also known as a bar diagram or a tape diagram. |
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Sum |
The result of adding numbers together. |
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Variable (letter) |
A symbol or letter that stands for a number. |
