LibrarySubtraction FluencyOne card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaDifference

27 − 4

Think it. Then flip it.
ahamoraTap to reveal
Back to the cue
Math & LogicOne small aha
Your new aha23

27 − 4 = 23. The difference tells you the gap between 4 and 27. 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. 40327 − 3RECALL
    24

    Mental subtraction

    Open this card ↗
  2. 40427 − 2RECALL
    25

    Mental subtraction

    Open this card ↗
  3. 40527 − 1RECALL
    26

    Mental subtraction

    Open this card ↗