LibrarySubtraction FluencyOne card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaDifference

9 − 3

Think it. Then flip it.
ahamoraTap to reveal
Back to the cue
Math & LogicOne small aha
Your new aha6

9 − 3 = 6. The difference tells you the gap between 3 and 9. Source: Subtraction

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 Subtraction Fluency

A few more worth knowing.

  1. 539 − 2RECALL
    7

    Mental subtraction

    Open this card ↗
  2. 549 − 1RECALL
    8

    Mental subtraction

    Open this card ↗
  3. 559 − 0RECALL
    9

    Mental subtraction

    Open this card ↗