### Consecutive Numbers

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

### Have You Got It?

Can you explain the strategy for winning this game with any target?

### Pair Sums

Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?

# Can You Make 100?

##### Age 11 to 14 Challenge Level:

How many ways can you find to put operation signs ($+$, $-$, $\times$, $\div$) between the digits make $100$?