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17 Cards in this Set
- Front
- Back
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Addend |
The numbers that are added together to find a sum.
Example: 2 + 7 = 9 (2 and 7 are addends of 9) |
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Compatible Numbers |
Numbers that are easy to compute mentally. |
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Difference |
The answer when subtracting two numbers. |
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Digit |
The symbols used to write a number:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9 |
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Division |
An operation to find the number in each group or the number of equal groups. |
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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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Expanded Notation |
A number written as the sum of the values of its digits.
Example: 2,476 = 2,000 + 400 + 70 + 6 |
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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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Inverse Relationship |
Operations that undo each other.
Examples: Adding 6 and subtracting 6; Multiplying by 4 and dividing by 4 |
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Place Value:
ones, tens, hundreds, thousands, millions, billions |
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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Round |
Replacing a number with a number that tells about how many or how much. |
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Solution |
The value of the variable that makes an equation true. |
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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. |
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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. |
