: Solving expressions with parentheses and multiple actions (multiplication/division before addition/subtraction).
: Working with units of length, mass, and time; calculating perimeter and area; and using a number ray. Sample Test Questions (based on 3rd Quarter materials) Typical tasks you might find in a variant include: Expressions : kontrolnye po matematike 3 klass po arginskoi s otvetami
: The primary source is the "Collection of Tasks for Mathematics for Independent, Verification, and Control Works" by I.I. Arginskaya, which contains a comprehensive set of materials used by teachers. : Solving expressions with parentheses and multiple actions