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Count the fingers
Solve sums by counting the fingers of two hands.
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Addition and subtraction up to 20
With these worksheets, students practice adding and subtracting up to 20 without bridge.
There are worksheets where addition and subtraction are practiced separately. On the last worksheet, students practice adding and subtracting up to 20 together.
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Corners in a quadrilateral
Sum of the four angles in a quadrilateral is 360 degrees. Calculate the size of an angle, based on three given angles.
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Sign of sine, cosine and tangent: Exercises
Exercises on the sign of sine, cosine or tangent (positive, negative, 0, 1 or -1).
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Sine function
Elements of the sine function: amplitude, equilibrium line and period. You receive a job description and get the requested information from it.
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Problems with percentages: Exercise
Problems with percentages about profit, discount, increase and decrease.
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Working out squares with remarkable products
Calculate the following squares using the rule of remarkable products.
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Proportions
An exercise on solving proportions: a/b = c/d means ad = bc.
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Distributivity in multiplication
Working out multiplications using distributivity: e.g. 31x11 = (30+1)x(10+1) = 300 + 30 + 10 + 1 = 341.
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Square roots of natural numbers
This exercise is about square roots of natural numbers, which have a natural number as a solution.
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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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