Grade 5 - Number
Standard 5.N.4 - Practice estimating multiplication equations by first rounding the numbers then multiplying them together.
Included Skills: Estimation
Develop and apply personal strategies for estimation and computation including: • front-end rounding • compensation • compatible numbers • Describe a situation relevant to self, family, or community for when estimation is used to: - make predictions - check reasonableness of an answer - determine approximate answers. • Develop and use strategies to estimate the results of whole-number computations and to judge the reasonableness of such results. • Critique the statement "an estimate is never good enough". • 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. • 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). • Explain estimation and computation strategies, including compatible numbers, compensation, and front-end rounding, and how each strategy relates to different operations. • Identify if a strategy used in solving a problem involved estimation or computation. • Apply and explain the choice of estimation or computation strategy such as compatible numbers, compensation, and front-end rounding.