4.OA.4 Review

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What is a composite number?

Back

A composite number is a positive integer that has at least one positive divisor other than one or itself, 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 expressed as that number multiplied by an integer.

Front

How can you determine the number of rectangular designs that can be made with a given number of tiles?

Back

To determine the number of rectangular designs, find the factors of the total number of tiles. Each pair of factors represents a possible rectangular arrangement.

Front

What is the significance of dividing a set into equal groups?

Back

Dividing a set into equal groups means that the total number of items in the set must be divisible by the number of groups, resulting in no remainder.

Front

What is the relationship between factors and rectangular arrangements?

Back

Factors of a number represent the possible dimensions (length and width) of a rectangle that can be formed using that number of units.

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How do you find the total number of students if they are divided into groups of a certain size?

Back

To find the total number of students, multiply the number of groups by the number of students in each group.

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers, meaning it has exactly two distinct positive divisors: 1 and itself.

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What is the importance of understanding multiples in problem-solving?

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Understanding multiples helps in identifying possible group sizes, arrangements, and divisibility, which are crucial for solving application-based problems.

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How can you identify if a number is composite or prime?

Back

To identify if a number is composite or prime, check its divisibility by integers other than 1 and itself. If it has more than two divisors, it is composite.

Front

What is the formula for finding the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width (Area = Length × Width).