CK-12 Foundation
Ck 12: Arithmetic: Estimation to Check Decimal Division
[Free Registration/Login may be required to access all resource tools.] Estimate and confirm decimal quotients by dividing leading digits
CK-12 Foundation
Ck 12: Arithmetic: Estimation of Whole Number
[Free Registration/Login may be required to access all resource tools.] Round and find compatible whole numbers in order to estimate products and quotients.
CK-12 Foundation
Ck 12: Arithmetic: Quotient Estimation With Mixed Numbers/fractions
[Free Registration/Login may be required to access all resource tools.] In this lesson students estimate quotients of fractions and mixed numbers using benchmarks and rounding. Students examine guided notes, review guided practice, watch...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Estimating Quotients
This is a question about the best way to estimate the answer to a division problem. The answer offers a basic definition of estimation, along with several methods and the positive and negative aspects of each.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Estimate the Quotient [Pdf]
This activitiy asks students to randomly select a one-digit divisor and a three-digit dividend and estimate the quotient mentally. Students must then explain why they believe their estimate is accurate.