Skip to main content

Triangular numbers puzzle

Triangular numbers puzzle
Sam works in a supermarket stacking cans of beans. The beans are delivered in boxes of 49 and Sam has to arrange them in triangular stacks. One day, he finds that he can arrange 49 cans into 3 triangular stacks. Can you work out how Sam did this? Is there a second way of doing it?
Keystage:  KS2, Year 6, 11 Plus

with a 14-day FREE trial!

Start a free 14 day trial today
  • Thousands of English, maths & science printable and interactive resources
  • Weekly learning plan for your child
  • Downloadable learning packs & workbooks
FREE for 14 days then £5.99/month
*£0 TODAY*
Cancel anytime