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Glossary of 4th Grade Math Vocabulary

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Difference
The answer to a subtraction problem.
"Equal Groups Take Apart"
A division problem.
"Equal Groups Put Together"
A multiplication problem.
If John has 10 marbles and Jenny has 18, how many more marbles than John does Jenny have?
more than - uses subtraction to solve the problem
If Mary has 15 puzzle pieces and Max has 40, how much less does Mary have than Max?
less than - uses subtraction to solve the problem.
about
In a problem, tells us to round numbers to solve.
between
The difference between one number and another. Use subtraction to solve.
Estimate
To solve a problem by rounding numbers to a certain place value.
Array
Shows a multiplication fact or area, with equal columns and equal rows.
Function
The operation or steps used to create a data table with related data - what makes the "out" in a function machine.
Number Sentence
An equation including an equals sign such as

3 x 5 = 15
Perimeter
The distance around something.

P = s+s+s+s....
horizontal
across
vertical
up and down

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