Mental calculations
problem
One Big Triangle
Age
5 to 7
Challenge level
Make one big triangle so the numbers that touch on the small triangles add to 10.
problem
Number Round Up
Age
5 to 7
Challenge level
Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.
problem
Buying a Balloon
Age
7 to 11
Challenge level
Lolla bought a balloon at the circus. She gave the clown six coins to pay for it. What could Lolla have paid for the balloon?
problem
4 Dom
Age
5 to 11
Challenge level
Use these four dominoes to make a square that has the same number of dots on each side.
problem
2, 4, 6, 8
Age
5 to 7
Challenge level
Using the cards 2, 4, 6, 8, +, - and =, what number statements can you make?
problem
Two Dice
Age
5 to 7
Challenge level
Find all the numbers that can be made by adding the dots on two dice.
problem
Domino Square
Age
7 to 11
Challenge level
Use the 'double-3 down' dominoes to make a square so that each side has eight dots.
problem
Noah
Age
5 to 7
Challenge level
Noah saw 12 legs walk by into the Ark. How many creatures did he see?
problem
Maze 100
Age
7 to 11
Challenge level
Can you go through this maze so that the numbers you pass add to exactly 100?