Groupings to 20

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For more information visit https://tahurangi.education.govt.nz/updates-to-nzmaths

Purpose:

You can help your child to practice the addition facts to 20.

What you need:

  • Game cards (PDF,60KB) . You can print these or make your own.
  • Cardboard. (Old cereal boxes are good)

What to do:

Glue the game cards on to card. Cut, shuffle and deal the cards between the players. Players look at their cards and place any pairs that add to 20 on the table in front of them.
For example 18 and 2 make a pair.
Players then take turns to ask each other for a card to make a pair.

What to expect your child to do:

Over time expect your child to instantly recall the pairs to 20.

Variation:

Use the cards as flash cards. Hold up one card and ask your child to name its pair to make 20.

He Kupu Māori:

tāpiri (~a)
add
tāpiritanga
addition
tapeke
total
takirua tau
number pair
riwhiriwhi (~a)
shuffle
toha (~ina)
deal, distribute

He Whakawhitinga Kōrero:

  • Riwhiriwhia ngā kāri, kātahi ka tohaina katoatia ki ngā kaitākaro. (Shuffle the cards and then deal them out to us all.)
  • Mēnā kei a koe ētahi tau e rua ko te 20 te tapeke, me whakatakoto ki mua i a koe. (If you two numbers which total 20, put them in front of you.)
  • Koirā tētahi takirua tau, ko te rua tekau te tapeke. Tāpirihia te tekau mā waru me te rua, ka rua tekau. (That’s a number pair which total 20. Add 18 and 2, you get 20.)
  • Kei a koe te tono mō tētahi tau e hiahia ana koe. Tono mai. (It’s your turn to ask for a number that you want. Ask away.)
  • Kua oti katoa ō kāri te whakatakoto ki te tēpu. Ko koe te toa. (All of your cards have been put down on the table, you’re the winner.)

Download a file of this activity:

PDF (259KB)