Math Games

Grade 5 - Number

Standard 5.N.4 - Round numbers up to 100,000.

Included Skills:

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.