Number bonds

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Sums up to 1
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Sums up to 2
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Sums up to 3
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Sums up to 4
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Sums up to 5
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Sums up to 6
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Sums up to 7
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Sums up to 8
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Sums up to 9
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Sums up to 10
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Sums up to 11
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Sums up to 12
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Sums up to 13
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Sums up to 14
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Sums up to 15
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Sums up to 19
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Sums up to 20
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Sums up to 25
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Sums up to 30
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Sums up to 35
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Sums up to 100
25
Sums up to 1000
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Recent activities in this game

Someone got all questions correct at level 1. Sums up to 1 .
39 minutes ago after 16 seconds of playing.
Someone had a problem at level 1. Sums up to 1 .
39 minutes ago after 25 seconds of playing.
Someone had a problem at level 7. Sums up to 7 .
1 hour ago after 6 seconds of playing.
Someone had a problem at level 1. Sums up to 1 .
20 hours ago after 11 seconds of playing.
Someone got all questions correct at level 1. Sums up to 1 .
20 hours ago after 25 seconds of playing.
Someone had a problem at level 5. Sums up to 5 .
20 hours ago after 4 seconds of playing.
Someone had a problem at level 1. Sums up to 1 .
21 hours ago after 13 seconds of playing.
Someone had a problem at level 2. Sums up to 2 .
2019-03-19 13:51 after 35 seconds of playing.
Someone had a problem at level 2. Sums up to 2 .
2019-03-19 13:51 after 4 seconds of playing.
Someone got all questions correct at level 1. Sums up to 1 .
2019-03-19 13:51 after 26 seconds of playing.

Are you aware of all number bonds?

The game Number bonds

Game instructions for number bonds

What other numbers, together with the given number, adds up to the sum? Each level generates up to 10 number bonds for the chosen sum. Number bonds are also called complementary numbers.

The number bonds are different each time you attempt a certain level. You must enter the correct number in order to proceed in the game. If you enter the wrong number, then it will be marked with a red border around the number. If it's too difficult, you can always change level by clicking the button Give up. When you practice the number bonds in this game knowledge, your mental arithmetic is also excercised and it will be easier to count.

Calculation of knowledge points

Each completed game level gives 1 knowledge point in Number bonds. The maximum number of points (25 knowledge points) is achieved when you pass all 25 levels. You'll get a bronze medal when you complete a level 2 times and a silver medal after 5 completed rounds. A gold medal will be received after 10 completed rounds. In Number bonds, the maximum number of collectable gold medals is 25. You only earn knowledge points for levels that has not been cleared before. A cleared level has a green background above. Even when you have completed a level, you can continue practicing at that level, but it gives you no more knowledge points.

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Reviews

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Additional game information

Game creator
Helpful Games
Target group
First grade - Fifth grade
Practices
Numbers, Addition, Mental calculation
Updated
2011-11-11
Published online
Unique id
4
Saved by
0-5 users

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