Number bonds

Choose a level:
1
Sums up to 1
2
Sums up to 2
3
Sums up to 3
4
Sums up to 4
5
Sums up to 5
6
Sums up to 6
7
Sums up to 7
8
Sums up to 8
9
Sums up to 9
10
Sums up to 10
11
Sums up to 11
12
Sums up to 12
13
Sums up to 13
14
Sums up to 14
15
Sums up to 15
16
Sums up to 16
17
Sums up to 17
18
Sums up to 18
19
Sums up to 19
20
Sums up to 20
21
Sums up to 25
22
Sums up to 30
23
Sums up to 35
24
Sums up to 100
25
Sums up to 1000
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Latest events in this game

32 minutes ago: Someone had a problem at level 10. Sums up to 10 which took 21 minutes.
54 minutes ago: Someone got all questions correct at level 10. Sums up to 10 which took 2 minutes.
3 hours ago: Someone had a problem at level 2. Sums up to 2 which took 52 seconds.
3 hours ago: Someone got all questions correct at level 1. Sums up to 1 which took 26 seconds.
3 hours ago: Someone got all questions correct at level 1. Sums up to 1 which took 12 seconds.
3 hours ago: Someone had a problem at level 1. Sums up to 1 which took 5 seconds.
3 hours ago: Someone got all questions correct at level 1. Sums up to 1 which took 47 seconds.
3 hours ago: Someone got all questions correct at level 1. Sums up to 1 which took 26 seconds.
6 hours ago: Someone had a problem at level 21. Sums up to 25 which took 4 seconds.
6 hours ago: Someone had a problem at level 11. Sums up to 11 which took 3 seconds.

Are you aware of all number bonds?

Practice number bonds with a math game

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 level results in 1 knowledge point. The maximum number of points (25 knowledge points) is achieved when you complete 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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Game info

This game is suitable for student between 6 years and 10 years.
By playing the game the student practices Numbers, Addition, Mental calculation.
The game with id 4 was created by Helpfulgames on .
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Comment Number bonds and addition facts


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There is 1 comment on this knowledge games.
Helpfulgames wrote:
25/9 21:58
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