These grids are filled according to some rules - can you complete
them?

Multiplication Tables - Matching Cards

Age 5 to 11 Challenge Level:

How to play.

Pelmathism is like Pelmanism. The computer starts with $16$
cards, face down. Alternatively you can choose the number of cards
you want to play with.

The cards come in pairs and you start with $100$ points. You
click on two cards to flip them over, if they match you win $50$
points, if not you lose $5$ points for each card. Try again.
Remember where the different numbers are so when you turn each
card, if you remember where its partner is you can make the match.
The game finishes when you have matched all the pairs.

Be a winner.

You are playing this game on the computer but not against the
computer. Chance comes into it, but it is a game of skill and
concentration and knowing your numbers. What is the maximum score
for $16$ cards? How close can you get to it? We think you are doing
extremely well to get a score of $400$ but it is possible, with
luck on your side, to do even better than that.

The maths is in the matching.

Where does the maths come in? Here is a fun way to practise
multiplication tables. The object is to find the matching pairs as
quickly as possible to get the highest score. The numbers on these
cards are also represented by the products of two numbers. For
example you have to match $14$ with $2 \times 7$ or with $7\times
2$ and you have to match $20$ with $2 \times 10$ or $10 \times 2$
or $4 \times 5$ or $5 \times 4$.

Printable Resources

To download printable versions of this game use the links
below. If you print double-sided, the cards will each
have an NRICH logo on the back. If you would prefer
them to be blank on the back, please just print the first page.