Library›Multiplication Fluency›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaProduct

4 × 16

Think it. Then flip it. ahamoraTap to reveal Back to the cue
Math & LogicOne small aha
Your new aha64

4 groups of 16 make 64. Reversing the factors, 16 × 4, gives the same product. Source: Multiplication table ↗

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 Multiplication Fluency

A few more worth knowing.

  1. 544 × 17RECALL
    68

    Mental multiplication

    Open this card ↗
  2. 554 × 18RECALL
    72

    Mental multiplication

    Open this card ↗
  3. 564 × 19RECALL
    76

    Mental multiplication

    Open this card ↗