| Objective A: Learners will develop and use
estimation skills. |
- Recognize when an estimate is appropriate.
- Develop and use estimation strategies, e.g., rounding, nearer to,
larger than, smaller than, etc.
- Apply estimation in working with quantities, measurement,
computation and problem solving.
- Estimate costs and income in distributing resources.
- Use estimation to determine if problem solution is reasonable.
- Establish upper and lower limits for an estimated answer, e.g.,
4.5 x 6.13, 4 x 6 = 24, 5 x 6 = 30, therefore the answer is
estimated as somewhere between 24 and 30 or 27, e.g., “ While
at Penney's, Mary is considering buying two blouses on sale for
$27.95 each, and a skirt priced at $34.50. She wants to pay cash for
her purchases but has only $110 in her purse. The sales tax in her
locality is 8.25%. Can she buy these items with the cash she has?”
27.95 = approximately 30, and 34.5 = approximately 35. If tax of
8.25% is rounded up to a convenient 10%, the total items would come
to $30 +$30 +$35 or 95. Adding approximately $10 for tax comes to
$105. Mary has enough cash.
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