You've got a handful of coins. The question: how much money is that altogether?
We'll learn a clever method — not piling everything in at once, but in an orderly way.
A three-step method
Step 1 — sort by value. Biggest first, smallest last.
Step 2 — count by group. First the dollar/pound coins, then 50¢/50p, then 25¢/20p, and so on.
Step 3 — combine. Add up the totals from each group.