### The Number Jumbler

### 5 by 5 Mathdokus

### The Remainders Game

Play this game and see if you can figure out the computer's chosen number.

### Consecutive Numbers

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

### Missing Multipliers

### Two and Two

How many solutions can you find to this sum? Each of the different letters stands for a different number.

### Shape Products

### Parallelogram It

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a parallelogram.

### Summing Consecutive Numbers

15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?

### Number Daisy

### Reflecting Squarely

In how many ways can you fit all three pieces together to make shapes with line symmetry?

### Shady Symmetry

### Number Pyramids

Try entering different sets of numbers in the number pyramids. How does the total at the top change?

### Square It

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

### Consecutive Seven

### Factors and Multiples Puzzle

### M, M and M

If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?

### Multiples Sudoku

### Sticky Numbers

### Going round in circles

### Shifting Times Tables

Can you find a way to identify times tables after they have been shifted up or down?

### Magic Letters

### An Equilateral Triangular Problem

Take an equilateral triangle and cut it into smaller pieces. What can you do with them?