Benchmark 12B: Habits of Mind : Computation and Estimation

• Add, subtract, multiply, and divide whole numbers mentally, on paper, and with a calculator. (1 of 5)
• Standard 8-1 page 44, Grades K-4
Model, explain, and develop reasonable proficiency with basic facts and algorithms

Standard 8-2 page 44, Grades K-4
Use a variety of mental computation and estimation techniques

Standard 7-1, page 94, Grades 5-8
Compute with whole numbers, fractions, decimals, integers, and rational numbers

Standard 7-4, page 94, Grades 5-8
Select and use an appropriate method for computing from among mental arithmetic, paper-and-pencil, calculator, and computer methods

• Use fractions and decimals, translating when necessary between decimals and commonly encountered fractions halves, thirds, fourths, fifths, tenths, and hundredths (but not sixths, sevenths, etc.). (2 of 5)
• Standard 12-5 page 57, Grades K-4
Apply fractions and decimals to problem situations
• 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. (3 of 5)
• Standard 5-4 page 36, Grades K-4
Apply estimation in working with quantities, measurement, computation, and problem solving

Standard 8-4 page 44, Grades K-4
Select and use computation techniques appropriate to specific problems and determine whether the results are reasonable

Standard 3-2 page 29, Grades K-4
Use models, known facts, properties, and relationships to explain their thinking

Standard 7-6, page 94, Grades 5-8
Use estimation to check the reasonableness of results

Standard 13-4, page 116, Grades 5-8
Understand the structure and use of systems of measurement

Standard 13-5, page 116, Grades 5-8
Extend their understanding of the concepts of perimeter, area, volume, angle measure, capacity, and weight and mass

• State the purpose of each step in a calculation. (4 of 5)
• Standard 4-1 page 32, Grades K-4