Library›Subtraction Fluency›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaDifference

27 − 16

Think it. Then flip it. ahamoraTap to reveal Back to the cue
Math & LogicOne small aha
Your new aha11

27 − 16 = 11. The difference tells you the gap between 16 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. 39127 − 15RECALL
    12

    Mental subtraction

    Open this card ↗
  2. 39227 − 14RECALL
    13

    Mental subtraction

    Open this card ↗
  3. 39327 − 13RECALL
    14

    Mental subtraction

    Open this card ↗