Addition

Number Bond Machines

You can choose to practise number bonds to 5, 10 or 100. The machine gives you one number and you have to type in the number you would need to add to it to make 5, 10 or 100. Click the button to check your answer and see how high your score can go. Ambleside Primary.

Ghostblasters Game

A two-player game from Oswego. First choose the total you want to practise, from 5 to 99. When you see a pair of ghosts that add together to make your target number, player one hits the Z key and player two the M key. Whichever player hits the key first gets the point. If you press your key when the ghosts don't make your target number, you lose a point. Great spooky sound effects.

Safe Cracker Game

Use the X and Z to turn one dial and the left/right arrows to turn the other dial. Can you crack the safe by finding two numbers that add up to make the target number? If you answer enough questions correctly you will get a bonus asteroid-style game. ICT Games.

Speed Grid Challenge

On the first screen you can choose how many questions you want to set the challenge to and how much time you want to do it in. Then you have to choose from the grid two numbers which add up to the required total. The image on the left links to Level 1, but if that's too easy, you can always try Level 2 or Level 3. Oswego.

Test the Toad

In this game from BBC Schools Numbertime you have to click on the answer to the addition or subtraction sum shown at the top of the screen. You can use the people numberline to count along and help you find the answer. The toad will then hop along to right number.

Addition Surprise

This game uses an addition grid with the numbers 0 to 9 along two sides. Drag the number tile to a place where it fits on the grid, e.g. you could put the 10 where the 6 column and 4 row intersect. When you have uncovered enough squares the picture will be revealed. Harcourt School Publishers.

Flight for Fuel

Fly your spaceship into the fuel pods, making sure you don't pick up too much fuel. This game introduces the idea of adding more than two numbers to make a total as you collect the fuel bit by bit. ICT Games.

Sum Sense

First you can set the number of sums to do and a time limit. When the game starts you have to drag the tile digits into place so that you end up with a sum which makes sense. In this game you will be adding single digits. Sometimes the answer is one digit and sometimes two. Oswego.

Mystery Addition Choose a UFO with a sum on it and click, then click the answer in the grid. A picture is slowly revealed as you clear the correct answers. A fun way to practise single digit addition from Dositey.

Powerlines This is a great problem-solving game from Oswego that challenges your brain. You have to drag the numbers onto the grid, making sure that the total of each line matches the target number. If you do well you will get a password to the next level. Add 10 Submarines This is a two-player game, although it could be played by one person or with two teams using an interactive whiteboard. You have to add 10 to the number shown. Get it right and your submarine will fire at the other player's. ICT Games. Adding Machine You can choose from three levels which will take you from single to double-digit addition. Flick one of the level switches to see a sum, then type in the answer and click the red button to check your answer. Ambleside Primary School. Callum's Addition Pyramid In this game you have to add the two numbers below to build up the pyramid. You can choose from easy, medium or hard levels. If you score 1000 pyramid points you can open the mummy's tomb. This game was designed by a Year 4 pupil at Ambleside Primary School!