Topic One (1.1): Column Multiplication

Introduction Icon.png Introduction

We will start Year 7 by looking at some written methods of multiplying. You may have already used the grid method to multiply, but we are now going to also look at column multiplication.

Consolidate Icon.png Warm Up

First complete the skill checker on page 83, using column addition to answer questions 1, 3b and 3d.

Please note, the method of column multiplication uses the Year 6 method of column addition.

If you have forgotten how to do this, it is really important that you revisit this topic before continuing with today’s lesson.

You might find it helpful to watch this video:

and to work through these lessons on the MyMaths website:

EXPLORE - Adding in columns (MyMaths)  Links to an external site. Links to an external site.[Not available on sample course]

Interact Icon.png Working through the coursebook

  • Start by watching this video, which explains column multiplication of 2 digit by 2 digit:

  • This video shows column multiplication of 3 digit by 2 digit:

  • Read and make notes on pages 83 and 84, copying out the worked examples on page 83 (finding the product of 40 and 30) and on page 84 (working out 123 x 26),  if you think it will help you. (Don’t worry about the division work, we shall study that next lesson).
  • Now see if you can answer the Band 2, questions 7-9 and 11 on page 87.
  • If you would like more practice, then work through these lessons on the MyMaths website:

EXPLORE - Long multiplication (MyMaths) Links to an external site. [Not available on sample course]

  • You may also want to watch the following Corbettmaths video:

Optional Activities Icon.png Plenary

You have a choice: you can end this lesson by playing a maths game, or watching a video (or even both, if you have time!)

Game-time!

This game will help speed up your multiplication facts recall:

PLAY - Times it out: untimed (MyMaths) Links to an external site. [Not available on sample course]

Video

Have you ever wondered why we count in tens? This interesting video looks at the biological, rather than mathematical, reason for this.

WATCH - Why Do We Count in Tens? (Twig) [Not available on sample course] 

Bridge Icon.png Support activities for this topic

The Band 1, questions 1-4 on page 86 will help build your skills on this topic.

Stretch Icon.png Extension activities for this topic

If you would like more of a challenge on this topic, go to page 88 and attempt Band 3, questions 13-15.