Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 3-5, page 290
Add, subtract, multiply, and divide whole numbers mentally, on paper,
and with a calculator.
Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 6-8, page 291
Use ratios and proportions, including constant rates, in appropriate
problems.
Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 3-5, page 290
State the purpose of each step in a calculation.
Benchmarks 12D (Habits of Mind: Communication Skills)
Grades 3-5, page 296
Write instructions that others can follow in carrying out a procedure.
Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 6-8, page 291
Determine what unit (such as seconds, square inches, or dollars per
tankful) an answer should be expressed in from the units of the inputs
to the calculations, and be able to convert compound units (e.g., yen per
dollar into dollar per yen, or miles/hour into feet/sec.
Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 3-5, page 290
Read and follow step-by-step instructions in a calculator or computer
manual when learning new procedures.
Benchmarks 12C (Habits of Mind: Manipulation and Observation)
Grades 3-5, page 290
Use calculators to determine area and volume from linear dimensions,
aggregate amounts of area, volume, weight, time, and cost, and find the
difference between two quantities of anything.
Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 6-8, page 291
Insert instructions into computer spreadsheet cells to program arithmetic
calculations.
Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 6-8, page 291
Decide what degree of precision is adequate and round off the result
of calculator operations to enough significant figures to reasonably reflect
those of the inputs.
Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 6-8, page 291
Estimate distances and travel times from maps and the actual size of
objects from scale drawings.
Benchmarks 12C (Habits of Mind: Manipulation and Observation)
Grades 6-8, page 294
Use calculators to compare amounts proportionally.
Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 3-5, page 290
Judge whether measurements and computations of quantities such as length,
area, volume, weight, or time are reasonable in a familiar context by comparing
them to typical values.