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20 Cards in this Set
- Front
- Back
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the value given to a digit by its place in a number
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place value
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to change the value of a number to one that is easier to work with
e.g. 42 = 40 |
round
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4<7
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4 is less than 7
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7>2
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7 is greater than 2
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any number or quantities being added together
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addend
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the answer to an addition problem
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sum
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the answer to a subtraction problem
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difference
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addition and subtraction sentences that use the same numbers
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fact family
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the symbol used to write numbers
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digit
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to find a number close to an exact amount
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estimate
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how long or how far away something is
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length
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how tall something is
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height
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the length between two points
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distance
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a word that tells about movement, such as right, left, up, down
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direction
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an object used to measure
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unit
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to find the length, height, or weight using standard or nonstandard units
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measure
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a figure such as a triangle or square, that is flat
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two-dimensional figure
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a plane figure that has four sides; each pair of opposite sides is equal and parallel
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parallelogram
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one of the line segments that make up a shape
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side
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a point where two or more sides meet
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vertex
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