17) Fluency Doubles

Doubling and Halving to 10: Filling a Wall


Develop fluency with double bonds for the wholes 2, 4, 6, 8, 10.


  • double bond: a two-part bond, where both parts are the same
  • double
  • equals as “is”


A little easier

Represent doubles with fingers

Support recall by using fingers to develop double bond fluency.

Click this link to read Teacher Notes for more information about using counters and fingers to support learning number bonds. 

A little harder

Activity 58

Students who have completed up to Ten Plus Bonds: Addition and Subtraction Ten and One can complete a similar activity for wholes in the teens. Complete Activity 58 Doubling and Halving to 20: Fluency Doubles Filling a Wall.


In the next activity students apply double bonds, to finding half of the whole, when wholes are presented in random order. Go to

Activity 18

Doubling and Halving to 10: Fluency Halves, Filling A Wall