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13 Cards in this Set
- Front
- Back
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equal to (=)
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same value when comparing two numbers
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greater than (>)
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a number with greater value when comparing two numbers
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less than (<)
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A number with lesser value when comparing two numbers
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number
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Represented by these symbols
0,1,2,3,4,5,6,7,8,9 |
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estimate
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An answer close to or approximating an exact answer
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rounding
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A type of estimation with specific rules
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compatible numbers
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Numbers that are easy to compute mentally
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sum
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The total in addition.
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addend
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Any number being added.
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difference
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The amount that remains after one number is subtracted fromanother number.
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subtraction( -)
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An operation that gives the difference between two numbers.
15-9 is 6. |
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addition ( + )
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An operation that combines numbers.
9 + 6 is 15 |
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exchange, trade,
regroup |
In place value, to use part of the value from one place in another place to make addition and subtraction easier.
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