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Free
Unit 1: Decimal fractions
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Free
Unit 2: Mixed numbers
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Free
Unit 3: Mixed numbers (cont)
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Free
Unit 4: Square dekameter. Square hectometer
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Free
Unit 5: Square milimeter. Table of metric area measures
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Free
Unit 6: Hectare
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Free
Unit 7: Concept of decimals
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Free
Unit 8: Concept of decimals (cont)
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Free
Unit 9: Place values of decimals. Reading, writing decimals
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Free
Unit 10: Decimal fractions
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Free
Unit 11: Equivalent decimals
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Free
Unit 12: Comparing two decimals
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Free
Unit 13: Writing length measurements as decimals
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Free
Unit 14: Writing weight measurements as decimals
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Free
Unit 15: Writing area measurements as decimals
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Free
Unit 16: Adding two decimals
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Free
Unit 17: Addition of more than two decimals
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Free
Unit 18: Commutative and associative property of adding decimals
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Free
Unit 19: Subtracting two decimals
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Free
Unit 20: Multiplying a decimal by a natural number
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Free
Unit 21: Multiplying a decimal by 10, 100, 1000...
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Free
Unit 22: Multiplying a decimal by a decimal
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Free
Unit 23: Multiplying a decimal by 0.1; 0.01; 0.001...
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Free
Unit 24: Commutative and associative property of multiplication with decimals
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Free
Unit 25: Dividing a decimal by a natural number
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Free
Unit 26: Dividing a decimal by 10, 100, 1000...
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Free
Unit 27: Dividing a natural number by a natural number while the quotient is a decimal
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Free
Unit 28: Dividing a natural number by a decimal
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Free
Unit 29: Dividing a decimal by a decimal
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Free
Unit 30: Percentage
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Free
Unit 31: Solving problems on percentages
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Free
Unit 32: Solving problems on percentages (cont.)
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Free
Unit 33: Solving problems on percentages (cont.)
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Free
Unit 34: Introduction to calculators
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Free
Unit 35: Using calculators to solve problems on percentages
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Free
Unit 36: Triangles
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Free
Unit 37: Area of a triangle
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Free
Unit 38: Trapezoids
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Free
Unit 39: Area of a trapezoid
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Free
Unit 40: Circle
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Free
Unit 41: Circumference of a circle
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Free
Unit 42: Area of a circle
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Free
Unit 43: Introduction to pie charts
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Free
Unit 44: Practice on areas
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Free
Unit 45: Practice on areas (cont)
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Free
Unit 46: Rectangular prisms. Cubes
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Free
Unit 47: Lateral surface area and total surface area of a rectangular prism
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Free
Unit 48: Lateral surface area and total surface area of a cube
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Free
Unit 49: Volume
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Free
Unit 50: Cubic centimeter and cubic decimeter
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Free
Unit 51: Cubic meter
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Free
Unit 52: Volume of a rectangular prism
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Free
Unit 53: Volume of a cube
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Free
Unit 54: Introduction to cylinders and spheres
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Free
Unit 55: Time measurements
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Free
Unit 56: Adding time measurements
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Free
Unit 57: Subtracting time measurements
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Free
Unit 58: Multiplying a time measurement by a number
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Free
Unit 59: Dividing a time measurement by a number
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Free
Unit 60: Speed
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Free
Unit 61: Distance
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Free
Unit 62: Time
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Unit 63: Finding the crossing time of 2 objects moving in opposite directions
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Free
Unit 64: Finding the crossing time of 2 objects moving in the same direction