Number Factory: Background Information |
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| Summary | Four numbers presented in a factory. With these numbers and the operations +, -, x, and : try to make a calculation that has the given number as answer. You can also use brackets in your calculation. This applet is similar to the applet Number Card. |
| Subject | number sense | number, estimation |
| Age Group | primary education | middle school (gr. 7-8) |
| Programmer | Michiel Doorman |
| Author | Michiel Doorman |
| Version | revised version |
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