More Lessons for Grade 3
Examples, solutions, videos, stories and songs to teach Grade 3 students how to estimate product.
1. Traci drinks 7 glasses of water each day. She says she will drink 2,555 glasses of water in a a year that has 365 days. Is this exact answer reasonable? Explain.
2. Trevor's cat sleeps 112 hours a week. Trevor solved the equation below to find how much his cat sleeps in 4 weeks.
4 x 112 = 448.
Trever says his cat sleeps 448 hours in 4 weeks. Is his answer reasonable?
Underestimating: The result of using smaller numbers to estimate a sum or product. The estimate is less than the actual answer.
Overestimating: The result of using larger numbers to estimate a sum or product. The estimate is greater than the actual answer.
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