Doubles and Halves Memory


The purpose of this activity is to help your child to learn doubles of numbers and their corresponding halves. For example 10 + 10 = 20, and 1/2 of 20 is 10, 8 + 8 = 16 and 1/2 of 16 is 8.

Link to Number Framework:

Number Facts, Stage 4

What you need:

  • Game cards (PDF, 27KB). You can print these or make your own.

What to do:

Use the doubles and halves cards to play memory. The aim of the game is to find as many matching pairs as possible by remembering where the cards are.

  • Spread out all the cards face down.
  • Turn over 2 cards. If the cards match, for example "1/2 of 4" and "2" players get to keep the pair. If the cards don’t match, players replace them face down.
  • Take turns to try and find a matching pair.
  • The winner is the player with the most pairs at the end of the game.


Have many pairs can you get?

What to expect your child to do:

Be able to instantly recall doubles and their corresponding halves.

Related Māori vocab:

half haurua
double rearua
matching pairs takirua taurite

Download a file of this activity:

PDF (77KB) or Word (50KB)

Download a file of this activity including questions to ask in Māori:

PDF (116KB) or Word (70KB)