LibrarySubtraction FluencyOne card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaDifference

29 − 28

Think it. Then flip it.
ahamoraTap to reveal
Back to the cue
Math & LogicOne small aha
Your new aha1

29 − 28 = 1. The difference tells you the gap between 28 and 29. 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. 43829 − 27RECALL
    2

    Mental subtraction

    Open this card ↗
  2. 43929 − 26RECALL
    3

    Mental subtraction

    Open this card ↗
  3. 44029 − 25RECALL
    4

    Mental subtraction

    Open this card ↗