4.OA.4 Review

Front

What is a composite number?

Back

A composite number is a whole number greater than 1 that has more than two distinct positive divisors, meaning it can be divided evenly by numbers other than 1 and itself.

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What does it mean for a number to be a multiple of another number?

Back

A number is a multiple of another number if it can be divided by that number without leaving a remainder.

Front

If a number is divided into equal groups with no remainder, what can we say about that number?

Back

The number is a multiple of the size of the groups.

Front

What is a rectangular pattern in terms of area?

Back

A rectangular pattern is a shape that can be formed by arranging a certain number of square units in rows and columns, where the total area is the product of the length and width.

Front

How can you determine the number of rectangular patterns that can be formed with a given area?

Back

To determine the number of rectangular patterns, find all the factor pairs of the area. Each pair represents a different length and width combination.

Front

What is the significance of the number 1 in determining prime and composite numbers?

Back

The number 1 is neither prime nor composite; prime numbers have exactly two distinct positive divisors (1 and itself), while composite numbers have more than two.

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What is a factor of a number?

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A factor is a whole number that can be divided evenly into another number.

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What does it mean for a number to be even?

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An even number is any integer that is exactly divisible by 2.

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What does it mean for a number to be odd?

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An odd number is an integer that is not divisible by 2, meaning it has a remainder of 1 when divided by 2.

Front

How do you find the total number of arrangements for a given area using square units?

Back

To find the total arrangements, list all the factor pairs of the area, as each pair represents a different arrangement.