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Four Triangles Puzzle
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?
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Robot Monsters
Use these head, body and leg pieces to make Robot Monsters which are different heights.
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Inside Triangles
How many different triangles can you draw on the dotty grid which each have one dot in the middle?
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Rolling that cube
My dice has inky marks on each face. Can you find the route it has taken? What does each face look like?
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Mixed-up Socks
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?
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Find the Difference
Place the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it.
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Which Scripts?
There are six numbers written in five different scripts. Can you sort out which is which?
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How many Times?
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.?
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Nine-Pin Triangles
How many different triangles can you make on a circular pegboard that has nine pegs?
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Reach 100
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.
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Factor Lines
Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.
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Got It
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.
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Make 37
Four bags contain a large number of 1s, 3s, 5s and 7s. Can you pick any ten numbers from the bags so that their total is 37?
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Number Lines in Disguise
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?
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Maze 100
Can you go through this maze so that the numbers you pass add to exactly 100?
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Two and Two
How many solutions can you find to this sum? Each of the different letters stands for a different number.