Library›Addition Fluency›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaSum

3 + 6

Think it. Then flip it. ahamoraTap to reveal Back to the cue
Math & LogicOne small aha
Your new aha9

3 + 6 = 9. Changing the order gives 6 + 3, the same sum. Source: Addition ↗

ahamoraReference ↗

Keep the thread going

One answer is a beginning.

Share a little curiosity, or follow it into the full collection.

Flip the full deck →

More from Addition Fluency

A few more worth knowing.

  1. 294 + 4RECALL
    8

    Mental addition

    Open this card ↗
  2. 304 + 5RECALL
    9

    Mental addition

    Open this card ↗
  3. 310 + 10RECALL
    10

    Mental addition

    Open this card ↗