Elementary Mathematics Post-Assessment

Part 1

Elizabeth is estimating the answer to 264 ÷ 63. She rounds 264 to 300 and 63 to 60. She then divides (300 ÷ 60) and arrives at an estimated quotient of 5. Elizabeth enters the estimate into the Estimation Calculator (see picture below).

Examine the picture above and then answer the following questions. Please feel free to refer back to the image on this page as you answer the questions.

Questions for Part 1

Part 2

Elizabeth decides to change her original estimate by moving the decimal point in the estimated quotient (5 becomes .5). She then inputs the estimate into the Estimation Calculator (see picture below).

Examine the picture above and then answer the following questions. Please feel free to refer back to the image on this page as you answer the questions.

Questions for Part 2