Part whole relationships and fact families

Home learning focus

Learn how part whole models can be used to understand fact families.

This lesson includes:

  • two videos
  • two activities

Learn

What are fact families?

Watch this video from White Rose Maths all about creating a fact family.

White Rose Maths

Now, let’s have a look at this video from White Rose Maths about how a part whole model and a bar model can be used to understand a fact family.

White Rose Maths

Part whole models

A part whole model can be helpful when working out simple calculations. They are a visual representation of writing out number sentences and can help solve missing fact family numbers.

Have a look at this part whole model.

The model shows that the numbers 20, 12 and 8 are part of a fact family. The number 20 is made of two parts, 12 and 8.

The diagram can help you work out possible number sentences in the fact family.

12 + 8 = 20

8 + 12 = 20

20 - 8 = 12

20 - 12 = 8

Practise

Activity 1

Can you complete the questions in this activity sheet from Classroom Secrets?

Fact families

Click here for the answers.

Activity 2

Have a go at this worksheet from Twinkl about using fact families and number bonds to answer sums. You can print it out or write your answers on a sheet of paper.

Addition and Subtraction Facts to 20

Click here for the answers.

There's more to learn

Have a look at these other resources around the BBC and the web.

KS1 Maths
BBC Bitesize Daily
Primary games
5 - 7 Maths
Game - Karate Cats Maths
Numbertime
audio