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Smoker face
This app uses a selfie to show what your face would look like if you smoked. The negative consequences of smoking are shown on your own face. Useful for smoking prevention and to encourage people to quit smoking.
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Problems with percentages: Exercise
Problems with percentages about profit, discount, increase and decrease.
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Cube: Unfolding
Development or unfolding of a cube based on various images.
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Polygon: Angles and sides
Find the adjacent and included angles or sides in a polygon.
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Angles in a triangle
Sum of the three angles in a triangle = 180 degrees.
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Types of triangles
Types of triangles:
- acute-angled,
- obtuse-angled,
- rectangular,
- isosceles,
- equilateral.
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Fraction of a number
Calculate the fractions of numbers (example: how much is 1/4 of 120?)
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Derive fraction from figure
The figures are divided into boxes and partly colored. The number of colored boxes must be expressed as a fraction.
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Division of fractions
Here you will find some basic exercises on dividing fractions.
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Transform improper fractions
This exercise requires you to convert improper fractions to whole numbers and basic fractions.
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Rounding a whole number
This exercise is about rounding a number to the nearest unit, ten, hundred and thousand.
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Compiling numbers
This exercise is about composing numbers with units, tens, hundreds and thousands.
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