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A fractional part of a group - explanation

In the applet below invastigate how to calculate a part of some number if that part is given as a fraction.
Read the instructions below the applet.

Made by Antonija Horvatek with the GeoGebra program

Move the 'steps' slider from the left to the right, step by step.
When finish, return it to the start position and change the values of the total number, numerator and denominator (by using sliders). Then move the 'steps' slider again from the left to the right...
Can you say the solution before moving the 'steps' slider?

Exercise

You can use the down applet to exercise the calculus explained in the upper applet.
Simply, think about the solution and click the 'answer' check box.
Then click the "Refresh" sign in the right-upper angle of the applet to repeat exercise.
If you do not understand something, go back to the previous applet.

Made by Antonija Horvatek with the GeoGebra program

Express a part of a whole group - exercise

What part of the box of chocolates is left over, and what is eaten? What fractions are answers of these quations?
Click the check boxes to check your answers.
Then click the "Refresh" sign in the right-upper angle of the applet to repeat exercise.

Made by Antonija Horvatek with the GeoGebra program

Note:

If applets don't work correctly, try to use another web browser (Chrome, Mozilla Firefox, Internet Explorer...) or change some properties in the web browser you use. Also, you can try upgrade your web browser.