In this game for two players, you throw two dice and find the product. How many shapes can you draw on the grid which have that area or perimeter?
Place the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it.
How many different triangles can you draw on the dotty grid which each have one dot in the middle?
A game in which players take it in turns to choose a number. Can you block your opponent?
How many different triangles can you make on a circular pegboard that has nine pegs?
Use these head, body and leg pieces to make Robot Monsters which are different heights.
Four bags contain a large number of 1s, 3s, 5s and 7s. Pick any ten numbers from the bags above so that their total is 37.
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.
Choose four different digits from 1-9 and put one in each box so that the resulting four two-digit numbers add to a total of 100.
On a digital 24 hour clock, at certain times, all the digits are consecutive. How many times like this are there between midnight and 7 a.m.?
There are six numbers written in five different scripts. Can you sort out which is which?
Start with three pairs of socks. Now mix them up so that no mismatched pair is the same as another mismatched pair. Is there more than one way to do it?
Can you go through this maze so that the numbers you pass add to exactly 100?
Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?