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)

What is the value of the row in this array?

What multiplication does this array represent?

Look at the array. Match the values to the correct word.

Which of these are correct arrays for 16?

Look at this array. Which division equation is correctly represented?

What multiplication fact does this array represent?

What are the factors shown by this array?

How many groups of 7 counters can be made from 56 counters?

Match the expressions to the correct product.

What is the area of this rectangle? {{ }} cm$$^2$$

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

Lesson outcome