Compare, order, and estimate whole numbers and decimals using place value and magnitude sense.
Defend the most reasonable estimate
Problem
\(\text{Three}\) school supplies cost \(\$4.79\), \(\$8.26\), and \(\$2.95\). Round every price to the nearest whole dollar and use the rounded sum to determine the most reasonable proposed total from \(\$10\), \(\$14\), \(\$16\), and \(\$30\). State the proposed total and the rounded sum.
Big Picture
What this problem is really about
The task is to build a defensible whole-dollar estimate. We’ll round every price to the nearest dollar, add those rounded amounts, and use that sum as the benchmark for the stated total. A proposed total is reasonable only when it agrees with the calculation that supports it.
Inside Gozunta
Turn the preview into practice.
More than a preview
Gozunta lets you study this problem—and more than 10,000 others.
Create targeted learning sessions, use hints, check your answer, read the walkthrough, watch the video, print the work, and track your progress.
