Library›Subtraction Fluency›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaDifference

13 − 6

Think it. Then flip it. ahamoraTap to reveal Back to the cue
Math & LogicOne small aha
Your new aha7

13 − 6 = 7. The difference tells you the gap between 6 and 13. 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. 10013 − 5RECALL
    8

    Mental subtraction

    Open this card ↗
  2. 10113 − 4RECALL
    9

    Mental subtraction

    Open this card ↗
  3. 10213 − 3RECALL
    10

    Mental subtraction

    Open this card ↗