Objects lying side by side in a horizontal line is known as a row.

A column is an arrangement of objects one above the other in a vertical line.

An array is when items are arranged in rows and/or columns.

Factors are whole numbers which exactly divide another whole number.

The product is the result of two numbers (factors) multiplied together.

Explain what a factor is and use arrays and multiplication and division facts to find them

Maths

Explain how to find all the factors of a number systematically

Use a complete list of factors to explain when a number is a square number

Explain how to identify a prime number or a composite number

Explain how to identify a prime factor of a number

In this unit pupils will understand and use the concept of factorisation, explaining what a factor is and how to use arrays and multiplication/division facts to find them. They will identify prime numbers, square numbers and composite numbers. In the future unit pupils will explain how to identify a multiple or common multiple to solve problems in a range of contexts.

In the prior unit pupils explained the use of the commutative and associative laws when multiplying three or more numbers. In this unit pupils will understand and use the concept of factorisation, explaining what a factor is and how to use arrays and multiplication/division facts to find them. They will identify prime numbers, square numbers and composite numbers.

In this unit pupils will understand and use the concept of factorisation, explaining what a factor is and how to use arrays and multiplication/division facts to find them. They will identify prime numbers, square numbers and composite numbers.

Understand and use the concept of factorisation (square and prime numbers)

Being systematic, means working in a set way, often according to a fixed plan.

A square number is the result of multiplying an integer (not a fraction) by itself.

A factor is a whole number which exactly divides another whole number.

A prime number is a whole number greater than one which has exactly two factors.

A composite number is a whole number which has more than two factors.

A prime factor is a factor of a number that is a prime number.

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Understand and use the concept of factorisation (square and prime numbers)

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