### Two Dice

Find all the numbers that can be made by adding the dots on two dice.

### Biscuit Decorations

Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?

### Writing Digits

Lee was writing all the counting numbers from 1 to 20. She stopped for a rest after writing seventeen digits. What was the last number she wrote?

# Grouping Goodies

##### Stage: 1 Challenge Level:

Pat has 17 sweets in her bag. Rebecca found the next solution by taking groups of five sweets away at a time - number 12 doesn't work. Why doesn't 12 work?

Alistair from Histon and Impington Infants School said:

We know that the number of sweets is odd, because she has one left over when she counts in twos but 7 does. She could have 7 sweets or she could have 17 sweets, but she can't have 12 because it is an even number. There are no other numbers under 20 that fit these rules.