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1. Addition in columns
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1. Addition in columns :: 1.01. Addition in columns
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1. Addition in columns :: 1.02. Addition in columns
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1. Addition in columns :: 1.03. Carrying to the tens
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1. Addition in columns :: 1.04. Notebook calculations
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1. Addition in columns :: 1.05. Application and practice
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1. Addition in columns :: 1.06. Carrying to the hundreds
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1. Addition in columns :: 1.07. Carrying in succession
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1. Addition in columns :: 1.08. Application and practice
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1. Addition in columns :: 1.09 Open questions and practice
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1. Addition in columns :: 1.10. Brain-teasers
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2. Subtraction in columns
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2. Subtraction in columns :: 2.01. Subtraction in columns
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2. Subtraction in columns :: 2.02. Exchanging a ten
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2. Subtraction in columns :: 2.03. Exchanging a hundred
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2. Subtraction in columns :: 2.04. Application
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2. Subtraction in columns :: 2.05. Exchanging in succession
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2. Subtraction in columns :: 2.06. Application
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2. Subtraction in columns :: 2.07. Two operations in a row
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2. Subtraction in columns :: 2.08. Application and practice
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2. Subtraction in columns :: 2.09. Open questions and practice
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2. Subtraction in columns :: 2.10. Brain-teasers
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3. Geometry :: 3.01. Perceiving things from different angles
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3. Geometry :: 3.02. Solids
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3. Geometry :: 3.03. Point, line segment, line and angle
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3. Geometry :: 3.04. Polygons
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3. Geometry :: 3.05. Perception
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3. Geometry :: 3.06. Perception
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3. Geometry :: 3.07. Mirror images
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3. Geometry :: 3.08. Symmetry
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3. Geometry :: 3.09. Open questions and perception
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3. Geometry :: 3.10. Brain-teasers
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4. Measuring and estimating
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4. Measuring and estimating :: 4.01. Monetary units, euros and cents
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4. Measuring and estimating :: 4.02. Application
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4. Measuring and estimating :: 4.03. Measuring length
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4. Measuring and estimating :: 4.04. Measuring in centimetres
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4. Measuring and estimating :: 4.05. Units of measurement, metres and centimetres
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4. Measuring and estimating :: 4.06. Writing lengths in two ways
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4. Measuring and estimating :: 4.07. Application
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4. Measuring and estimating :: 4.08. Units of mass, grams
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4. Measuring and estimating :: 4.09. Units of mass, kilograms
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4. Measuring and estimating :: 4.10. Units of volume, litres and decilitres
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4. Measuring and estimating :: 4.11. Application
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4. Measuring and estimating :: 4.12. Open questions and practice
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4. Measuring and estimating :: 4.13. Brain-teasers
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5. Revision :: 5.01. Revising multiplication
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5. Revision :: 5.02. Application and practice on multiplication
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5. Revision :: 5.03. Revising mental arithmetic
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5. Revision :: 5.04. Revising calculating in columns
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5. Revision :: 5.05. Revising units of measurement
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5. Revision :: 5.06. Perception
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5. Revision :: 5.07. Information search and problem solving
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5. Revision :: 5.08. Problem solving
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