Using arrays to multiply a 2 digit number by a 1 digit number

In this lesson, we will learn to multiply 2 digit numbers by 1 digit numbers using arrays. We will construct suitable arrays to represent a number, and partition them to make a multiplication calculation clearer.

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Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What does the word 'derive' mean?

1/5

Q2.Which of the following are strategies for deriving facts?

2/5

Q3.Which fact can be derived from 2 x 4 = 8

3/5

Q4.What fact can be derived from 6 divided by 2 is equal to 3?

4/5

Q5.Which fact can be derived from 4 x 6 = 24?

5/5

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What does the word 'derive' mean?

1/5

Q2.Which of the following are strategies for deriving facts?

2/5

Q3.Which fact can be derived from 2 x 4 = 8

3/5

Q4.What fact can be derived from 6 divided by 2 is equal to 3?

4/5

Q5.Which fact can be derived from 4 x 6 = 24?

5/5

Video

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Worksheet

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Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Using arrays to multiply a 2 digit number by a 1 digit number

Are you a whizz at multiplying now? You might need a pencil and paper to help you choose the correct answer in this quiz.

Q1.Which is an example of partitioning?

1/6

Q2.Partitioning makes multiplying two digit numbers easier.

2/6

Q3.13 x 5 =

3/6

Q4.17 x 3 =

4/6

Q5.18 x 4 =

5/6

Q6.Use what you know about place value to work out 180 x 4 =

6/6

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Using arrays to multiply a 2 digit number by a 1 digit number

Are you a whizz at multiplying now? You might need a pencil and paper to help you choose the correct answer in this quiz.

Q1.Which is an example of partitioning?

1/6

Q2.Partitioning makes multiplying two digit numbers easier.

2/6

Q3.13 x 5 =

3/6

Q4.17 x 3 =

4/6

Q5.18 x 4 =

5/6

Q6.Use what you know about place value to work out 180 x 4 =

6/6

Lesson summary: Using arrays to multiply a 2 digit number by a 1 digit number

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