undefined  Learn   Estimate the sum of two decimals How to Estimate a sum by rounding. Round each decimal term that will be added. Add the rounded terms Example: Estimate the sum of 0.988 + 0.53 Round 0.988 + 0.53 to 1 + 0.5 Add the rounded numbers to obtain the estimated sum of 1.5 The actual sum of 0.988 + 0.53 is 1.518 Some uses of rounding are: Checking to see if you have enough money to buy what you want. Getting a rough idea of the correct answer to a problem Return to Top Share Practice Estimate the Sum of the decimals.   +   You have correct and   incorrect.  This is percent correct. Return to Top Tell Others About This Site AAASpell.com Practice Your Spelling List Practice Our Spelling Lists Vocabulary Practice Alphabet Practice Play Game What is it? Best Score How many correct answers can you get in 60 seconds? Extra time is awarded for each correct answer. Play longer by getting more correct. How fast can you get 20 more correct answers than wrong answers? Sudoku Timez Attack Multiplication Video Game Return to Top Explore Math Lessons by Grade Kindergarten  First Second Third Fourth Fifth Sixth Seventh Eighth Math Topics Addition Algebra Comparing Counting Decimals Division Equations Estimation Exponents Fractions Geometry Graphs Measurement Mental Math Money Multiplication Naming Numbers Patterns Percent Place Value Practical Math Properties Ratios Statistics Subtraction Math Resources Schools Teachers Parents Home Schooling Web Resources Spelling Lessons by Grade First Second Third Fourth Fifth Sixth Seventh Eighth or - Practice Your Word List Vocabulary Lessons by Grade First Second Third Fourth Fifth Sixth Seventh Eighth Geography States of the United States Nations of the World Geographical Photos WorldPlenty.com What will the future be like? Other Interests Music DVD Computer and Video Games Books Sports Toys and Games Return to Top About This Site Frequently Asked Questions Send Us Feedback About this Site Privacy Policy Purchase The Math Class CD Share| Return to Top