Library›Subtraction Fluency›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaDifference

16 − 15

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

16 − 15 = 1. The difference tells you the gap between 15 and 16. 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. 13916 − 14RECALL
    2

    Mental subtraction

    Open this card ↗
  2. 14016 − 13RECALL
    3

    Mental subtraction

    Open this card ↗
  3. 14116 − 12RECALL
    4

    Mental subtraction

    Open this card ↗