These activities are part of our Primary collections, which are problems grouped by topic.
Strike it out
Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.
Dicey operations
In these addition and subtraction games, you'll need to think strategically to get closest to the target.
Fifteen cards
Can you use the information to find out which cards I have used?
Consecutive numbers
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
Play to 37
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.
Build it up
Buying a balloon
Subtraction surprise
Space distances
Super shapes
The value of the circle changes in each of the following problems. Can you discover its value in each problem?
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.
Sealed solution
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?
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.
Finding fifteen
Three neighbours
Take three consecutive numbers and add them together. What do you notice?
Roll these dice
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?
Maze 100
Can you go through this maze so that the numbers you pass add to exactly 100?
Domino square
Six ten total
Six numbered cubes
What distance?
Can you use addition and subtraction to answer these questions about real-life distances?
Amy's dominoes
Amy has a box containing domino pieces but she does not think it is a complete set. Which of her domino pieces are missing?
Ordering journeys
How would you put these journey lengths in order?
Twenty divided into six
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?
Dice in a corner
How could you arrange at least two dice in a stack so that the total of the visible spots is 18?
4 dom
Two and two
How many solutions can you find to this sum? Each of the different letters stands for a different number.