These activities are part of our Primary collections, which are problems grouped by topic.
problem
Strike it Out
Age
5 to 11
Challenge level
Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.
problem
Fifteen cards
Age
7 to 11
Challenge level
Can you use the information to find out which cards I have used?
problem
Consecutive Numbers
Age
7 to 14
Challenge level
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
problem
Play to 37
Age
7 to 11
Challenge level
In this game for two players, the idea is to take it in turns to choose 1, 3, 5 or 7. The winner is the first to make the total 37.
problem
Build it up
Age
7 to 11
Challenge level
Can you find all the ways to get 15 at the top of this triangle of numbers? Many opportunities to work in different ways.
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
Subtraction Surprise
Age
7 to 14
Challenge level
Try out some calculations. Are you surprised by the results?
problem
Super Shapes
Age
7 to 11
Challenge level
The value of the circle changes in each of the following problems. Can you discover its value in each problem?
problem
Space distances
Age
7 to 11
Challenge level
This task focuses on distances travelled by the asteroid Florence. It's an opportunity to work with very large numbers.
problem
Make 37
Age
7 to 11
Challenge level
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?
problem
Finding Fifteen
Age
7 to 11
Challenge level
Tim had nine cards each with a different number from 1 to 9 on it. How could he have put them into three piles so that the total in each pile was 15?
problem
Roll these Dice
Age
7 to 11
Challenge level
Roll two red dice and a green dice. Add the two numbers on the red dice and take away the number on the green. What are all the different possible answers?
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?
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
Six Ten Total
Age
7 to 11
Challenge level
This challenge combines addition, multiplication, perseverance and even proof.
problem
Six Numbered Cubes
Age
7 to 11
Challenge level
This task combines spatial awareness with addition and multiplication.
problem
Amy's Dominoes
Age
7 to 11
Challenge level
Amy has a box containing domino pieces but she does not think it is a complete set. Which of her domino pieces are missing?
problem
What Distance?
Age
7 to 11
Challenge level
Can you use addition and subtraction to answer these questions about real-life distances?
problem
Twenty Divided into Six
Age
7 to 11
Challenge level
Katie had a pack of 20 cards numbered from 1 to 20. She arranged the cards into 6 unequal piles where each pile added to the same total. What was the total and how could this be done?
problem
Ordering Journeys
Age
7 to 11
Challenge level
How would you put these journey lengths in order?
problem
Reach 100
Age
7 to 11
Challenge level
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.
problem
Sealed Solution
Age
7 to 11
Challenge level
Ten cards are put into five envelopes so that there are two cards in each envelope. The sum of the numbers inside it is written on each envelope. What numbers could be inside the envelopes?
problem
Got It
Age
7 to 14
Challenge level
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.
problem
Dice in a Corner
Age
7 to 11
Challenge level
How could you arrange at least two dice in a stack so that the total of the visible spots is 18?
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.