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What is a numerical expression?

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A numerical expression is a mathematical phrase that includes numbers and operations (like addition, subtraction, multiplication, and division) but does not have an equal sign.

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CCSS.6.EE.A.1

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What does 'add' mean in a numerical expression?

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'Add' means to combine two or more numbers to get a total. For example, adding 4 and 5 gives 9.

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What does 'subtract' mean in a numerical expression?

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'Subtract' means to take one number away from another. For example, subtracting 3 from 10 gives 7.

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CCSS.5.OA.A.1

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What does 'multiply' mean in a numerical expression?

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'Multiply' means to increase a number by another number. For example, multiplying 3 by 4 gives 12.

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CCSS.5.OA.A.1

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What does 'sum' refer to in a numerical expression?

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'Sum' refers to the result of adding two or more numbers together.

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What does 'difference' refer to in a numerical expression?

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'Difference' refers to the result of subtracting one number from another.

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CCSS.5.OA.A.1

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How do you write 'add four and nine' as a numerical expression?

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4 + 9

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How do you write 'multiply two and twelve' as a numerical expression?

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2 x 12

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How do you write 'the sum of eight and seven' as a numerical expression?

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8 + 7

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How do you write 'two times the sum of eight and seven' as a numerical expression?

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2 x (8 + 7)

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