Mathematics 5
N5.4
Develop and apply personal strategies for estimation and computation including:
- front-end rounding
- compensation
- compatible numbers.
[C, CN, ME, PS, R, V]
Indicators for this outcome
| (a) |
Describe a situation relevant to self, family, or community for when estimation is used to:
|
| (b) |
Develop and use strategies to estimate the results of whole-number computations and to judge the reasonableness of such results. |
| (c) |
Critique the statement "an estimate is never good enough". |
| (d) |
Identify and describe situations relevant to self, family, or community when it is best to overestimate or when it is best to underestimate and explain the reasoning. |
| (e) |
Determine an approximate solution to a problem not requiring an exact answer and explain the strategies and reasoning used (e.g., number of fish, deer, or elk required to feed a family over a winter; amount of money a family spends on groceries). |
| (f) |
Explain estimation and computation strategies, including compatible numbers, compensation, and front-end rounding, and how each strategy relates to different operations. |
| (g) |
Identify if a strategy used in solving a problem involved estimation or computation. |
| (h) |
Apply and explain the choice of estimation or computation strategy such as compatible numbers, compensation, and front-end rounding. |
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