Abacus - Addition

1
Addition without switching
Ones
2
Addition without switching
Tens
3
Addition without switching
Hundreds
4
Switch five
Ones
5
Switch five
Tens
6
Switch five
Hundreds
7
Switch ten
Ones
8
Switch ten
Tens
9
Switch ten
Hundreds
10
Switch both five and ten
Ones
11
Switch both five and ten
Tens
12
Switch both five and ten
Hundreds
Save
Comment
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Recent activities in this game

Someone had a problem at level 6. Switch five Hundreds .
22 minutes ago after 11 seconds of playing.
Someone got all questions correct at level 5. Switch five Tens .
22 minutes ago after 1 minute of playing.
Someone had a problem at level 5. Switch five Tens .
23 minutes ago after 1 second of playing.
Someone got all questions correct at level 4. Switch five Ones .
23 minutes ago after 2 minutes of playing.
Someone got all questions correct at level 1. Addition without switching Ones .
25 minutes ago after 57 seconds of playing.
Someone got all questions correct at level 3. Addition without switching Hundreds .
26 minutes ago after 53 seconds of playing.
Someone had a problem at level 3. Addition without switching Hundreds .
27 minutes ago after 0 seconds of playing.
Someone got all questions correct at level 2. Addition without switching Tens .
27 minutes ago after 2 minutes of playing.
Someone had a problem at level 9. Switch ten Hundreds .
29 minutes ago after 3 minutes of playing.
Someone had a problem at level 12. Switch both five and ten Hundreds .
3 hours ago after 25 seconds of playing.

Learn addition on abacus!

practice addition on an abacus

Description and game instructions

If you do not already know how to use an abacus you are recommended to play the game Abacus - basics. A descriptions of how the abacus is built up and the values of the beads, can also be found there. If you want to practice subtraction on an abacus there's a well suited game for that!

Difficulties in addition

When you calculate addition on an abacus there are three difficulties you may encounter as described below. There are corresponding levels in the game above, to be able to practice all the difficulties individually or many at the same time.
Switch five
Carrying five means that there are not enough beads in the lower deck of the rod and you need to switch into a bead with the value of five from the upper deck. The additions you need to remember in these calculations are:
4 = 5 - 1
3 = 5 - 2
2 = 5 - 3
1 = 5 - 4
Switch ten
Carrying ten means that there are not enough beads on that rod. Therefore, a bead from the rod to the left need to be switched. Try to make the switch directly - without switching between the two beads above the beam (which each have the value five). You have to master the following additions to perform a carry with the value of ten:
9 = 10 - 14 = 10 - 6
8 = 10 - 23 = 10 - 7
7 = 10 - 32 = 10 - 8
6 = 10 - 41 = 10 - 9
5 = 10 - 5
Switch both 5 and 10
This means you have to perform both the switched mentioned above. At first it might be difficult to manage the switches and it's really easy to get lost in an exchange. One tip is to remember the initial value the abacus had so that you can start over just from there, without having to restart the entire round.

Is it possible to cheat with calculating on an abacus?

No, there are no cheating if you want to learn how to use an abacus efficiently. If you are prone to mental arithmetic, you can of course perform the addition in your head and then move the beads to the right positions. But then there is also no point in using the abacus!

Calculation of knowledge points

Each completed level results in 2 knowledge point. The maximum number of points (24 knowledge points) is achieved when you complete all 12 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 Abacus - Addition, the maximum number of collectable gold medals is 12. 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

4.5
Total 8
5
6
4
0
3
2
2
0
1
0

Additional game information

Game creator
Helpfulgames
Target group
6 years - 15 years
Practices
Logical thinking, Addition, Abacus
Updated
2012-04-20
Published online
Unique id
14

Report

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Comment Abacus - Addition


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There are a total of 6 comments on this knowledge games.

A
Anonymous
29 January 2018 23:49
very good for practice
j
john rey delos santos
19 September 2017 15:01
nice game!its so very funtastic
d
dilisha
5 July 2016 17:48
this game is spectacular it is a fantastic way of learning i have learned more in one day than in 4 days i will continue to play and practice it better.
A
Aisha
23 December 2015 17:32
IT WAS SO INTERESTING TO DO ADDITION ON ABACUS AND A VERY EASY WAY TO LEARN ABACUS.
E
Emil
18 December 2014 01:56
I thought this game was great. It is an easy way to learn how to use an abacus.
a
ankitha
20 September 2014 17:46
i know the abacus but i did not learn but i know about it
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