Library›Addition Fluency›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaSum

7 + 25

Think it. Then flip it. ahamoraTap to reveal Back to the cue
Math & LogicOne small aha
Your new aha32

7 + 25 = 32. Changing the order gives 25 + 7, 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. 2727 + 26RECALL
    33

    Mental addition

    Open this card ↗
  2. 2737 + 27RECALL
    34

    Mental addition

    Open this card ↗
  3. 2747 + 28RECALL
    35

    Mental addition

    Open this card ↗