
Two primes make one square
Can you make square numbers by adding two prime numbers together?
Can you make square numbers by adding two prime numbers together?
Here are four cubes joined together. How many other arrangements of four cubes can you find? Can you draw them on dotty paper?
What is the greatest number of counters you can place on the grid below without four of them lying at the corners of a square?
Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.
The items in the shopping basket add and multiply to give the same amount. What could their prices be?
Can you work out the arrangement of the digits in the square so that the given products are correct? The numbers 1 - 9 may be used once and once only.
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.
This multiplication uses each of the digits 0 - 9 once and once only. Using the information given, can you replace the stars in the calculation with figures?
Mrs Morgan, the class's teacher, pinned numbers onto the backs of three children. Use the information to find out what the three numbers were.