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.
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.