Package 2-1 Dicey addition

This task offers your child the opportunity to work flexibly with numbers and use their knowledge of landmark numbers (for example; multiples of fives and tens) and number facts.

Things you need

Have these things available so your child can complete this task.

Ideal

• Dicey addition video

• a 0-9 dice or 0-9 spinner (Activity sheet 1)

• paper

• paperclip

• pen

• pencils or markers

Back up

• Read the instructions about how to play the game.

Why is this activity important?

This task is designed to offer your child the opportunity to work flexibly with numbers and use their knowledge of landmark numbers (for example; multiples of fives and tens) and number facts. It also encourages mathematical reasoning. Have fun!

Before you start

Make sure you have the required resources ready. Create the spinners as shown in the Dicey addition video by using this decagon template, some card, pen and paper clip.

What your child needs to know and do

This task is easily adaptable and your child can bring to it whatever they know about numbers, place value and additive thinking.

What to do next

Watch the Dicey addition video.

How to play:

• Find a partner and collect the resources needed.

• Draw your game boards so you each have the same one.

• For example: _ _ _ + _ _ _ + _ _ _ = ________

• You can start with something different if you would like.

• Each player takes a turn to spin the spinner and decide where to play that digit in their number sentence (equation).

• Take it in turn to spin the spinner until all the spaces have been filled in.

• The person whose sum is closest to 1000 is the winner!

Options for your child

Activity too hard?

Vary the target number.

Slowly build up the size of the numbers each time you play the game. This is also useful when playing with younger siblings.

Activity too easy?

Spend time discussing the strategies used whilst playing the game and finding the total.

Vary the target number.

Follow-up questions to ask your child

• What would happen if I had said....instead of ...? (Identify a time when playing the game that could have changed the outcome of who won.)

• How could we change the game to make it more/less challenging?

Extension/Additional activity

Play the dicey addition game using one of these scoring systems:

1. A point for a win. The first person to reach 10 points wins the game.

2. Each player keeps a running total of their "penalty points", the difference between their result and 1000 after each round. First to 5000 loses.

Have your child create their own game boards. They may like to use subtraction or multiplication instead.

You can find out more about Dicey addition at NRICH from Cambridge University.