3rd Grade OA Review

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What is a fact family?

Back

A fact family is a group of related math facts that use the same numbers. For example, the numbers 3, 4, and 12 can create the facts: 3 x 4 = 12, 4 x 3 = 12, 12 ÷ 3 = 4, and 12 ÷ 4 = 3.

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What does multiplication mean?

Back

Multiplication is a way to add a number to itself a certain number of times. For example, 3 x 4 means adding 3 four times: 3 + 3 + 3 + 3 = 12.

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What does division mean?

Back

Division is splitting a number into equal parts. For example, 12 ÷ 4 means splitting 12 into 4 equal groups, which gives 3.

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What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. If you know that 4 x 3 = 12, you also know that 12 ÷ 4 = 3.

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What is an equation?

Back

An equation is a mathematical statement that shows that two expressions are equal, using the equal sign (=). For example, 5 + 3 = 8.

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What is a number sentence?

Back

A number sentence is a mathematical statement that includes numbers and operations, such as addition, subtraction, multiplication, or division.

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What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac. It allows you to multiply a number by a sum by distributing the multiplication.

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What is a variable in math?

Back

A variable is a symbol, often a letter, that represents a number we don't know yet. For example, in the equation x + 3 = 5, x is the variable.

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How do you find the total when you multiply?

Back

To find the total when you multiply, you take one number (the multiplier) and add it to itself as many times as the other number (the multiplicand) indicates.

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What is a word problem in math?

Back

A word problem is a math problem written in words instead of numbers. It requires reading and understanding the situation to find the solution.