We had fun today using our addition skills to solve a problem. Some people said it was tricky but a little challenge helps us learn.

Here is the puzzle:

Chico’s cards are all different.

There is a number from 1 to 8 on each.

Chico has chosen four cards that add up to 20. What are they?

There are 7 possibilities. Try to find them all.

Most pairs found it helpful to use playing cards. They listed their answers e.g. 7 + 3 + 6 + 4. We soon discovered that our bonds to 10 helped us. Some pairs were fast to use two cards to make 11 then two to make 9.

We had to check that we hadn’t repeated a solution e.g. 6 + 4 + 7 + 3 is the same as 7 + 4 + 3 + 6

Try our problem. Good luck.