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Addition and subtraction of two-place numbers

Exercises on the blackboard

Numerical crossword

Weighting

Comparison of numbers

Exercises on the blackboard

Multiplication and division of numbers

Multiplication table

Exercises on the blackboard

Numerical crossword

Expressions with brackets

Exercises on the blackboard

Addition and subtraction of three-value numbers

Exercises on the blackboard

Logical coloring

Geometrical figures

Coloring as an example

Combinatorics

Overlapping figures

Put the patch

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