Flashcards: Mastering Mathematical Operations and Measurement — 20 cartões

Operations on Rational Numbers

Mental and written methods simplify calculations.

Rounding to decimal places

Approximate to a specific number of decimal digits.

Standard Form — representation?

Expressing numbers as a × 10^m.

Upper and Lower Bounds — purpose?

Define the range of possible true values.

Units of Measurement — importance?

Standardize quantities for clear communication.

Distance and Speed — formula?

Distance = Speed × Time.

Density — formula?

Density = Mass / Volume.

Constructions — tools?

Straightedge and compass.

Angles — types?

Acute, right, obtuse, straight.

3D Shapes — properties?

Faces, edges, vertices, symmetry.

Operations on Rational Numbers — mental methods?

Decompose numbers, use known facts.

Rounding — intermediate steps?

Avoid to prevent error accumulation.

Standard Form — convert?

Rewrite numbers as a × 10^m.

Bounds for measurements — discrete data?

±0.5 units from measured value.

Units of measurement — examples?

Meter, kilogram, liter.

Distance and Speed — graph?

Slope indicates speed; flat line = stop.

Density — units?

kg/m³ or g/cm³.

Constructions — bisect?

Divide segments or angles into two equal parts.

Angles — sum in triangle?

180°.

3D drawings — purpose?

Visualize and interpret spatial structures.