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Down: 1) an expression with variables2) In a number expression, Parentheses tell which operation to do first3) in a number expression, multiplication and division must be done before addition and subtraction Across: 4) a symbol or a letter that stands for a number 5) 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 the products.6) A process of replacing a number with the nearest multiple of 10, 100, 1,000, and so on.
 

 

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