Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

I'm Eight

Find a great variety of ways of asking questions which make 8.

Calendar Capers

Choose any three by three square of dates on a calendar page...

Calculation 2000

Stage: 3 Short Challenge Level:
See all short problems arranged by curriculum topic in the short problems collection

What is the value of $2000+1999 \times 2000$?

If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.

This problem is taken from the UKMT Mathematical Challenges.