Scholastic
Study Jams! Estimate Sums & Differences of Whole Numbers
Estimating is an essential skill used in everyday life. This presentation explains how to apply prior knowledge about rounding numbers to estimating sums and differences. Example problems and assessment include large numbers, making this...
PBS
Estimating Profit from a Job
Profit always seems to get everyone's attention. The same is true during a instructional activity on estimation. Learners use given information to estimate the cost of supplies for a painting job. They then develop a strategy for...
Curated OER
Rounding
The two rules of rounding are expertly-covered in this math PowerPoint. Young mathematicians are instructed to look at the number to the right of the place value they must round to. If the number is 0-4, the number stays the same. If the...
Illustrative Mathematics
Rounding to 50 or 500
In a six-problem learning activity, children are guided to solve word problems that involve rounding to the nearest ten and nearest hundred. A commentary and answer key provide different approaches that learners may take in solving the...
Curated OER
Estimate Sums and Differences
In this estimating sums and differences practice learning exercise, students sharpen their problem solving skills as they solve 6 story problems.
Curated OER
Estimating Differences (Online Interactive)
In this estimating worksheet, students solve 20 problems in which two or three digit numbers are subtracted after rounding. Students round each number and then give an estimated answer. This is an online interactive worksheet.
Shodor Education Foundation
Estimating With Fire
Watch the damage from a forest fire in this interactive simulation activity that challenges learners to estimate the burn area using different approaches. Learners are given a worksheet to track the different burn patterns and practice...
EngageNY
Sums and Differences of Decimals
Sometimes dealing with decimals is so much easier than dealing with fractions. The ninth lesson in a 21-part module has the class consider situations when it might be easier to add or subtract fractions by first converting to decimals....
Curated OER
Practice Estimating!
Bring math home with this interative estimating worksheet! Scholars make educated guesses about the number of six household items: crayons in a crayon box, keys on a key ring, coins in a piggy bank, trees in the yard, pictures on the...
Curated OER
Estimating Differences of Money
When it comes to money math, show scholars that estimation is their best friend. They round money values to the closest dollar, 10 dollar, and 100 dollar increments, solving 19 addition and subtraction problems with approximate answers....
Curated OER
Estimating Solutions to Word Problems
Learners use estimation to determine the answers to word problems by rounding whole numbers. In this estimation lesson plan, pupils compare and contrast solutions using the best answer.
Curated OER
Rounding Whole Numbers; Estimating Sums And Differences
In this rounding whole numbers and estimating sums and differences worksheet, students problem solve and calculate the answers to forty two mathematical equations.
Curated OER
Estimating Sums and Differences
Work on rounding, estimating, adding, and subtracting with a helpful math activity! Fifth graders study different sets of addition and subtraction problems, and after rounding each number to the leading digit, they estimate what the sum...
CK-12 Foundation
Decimal Rounding Given Place Value
Tests mathematicians' knowledge of decimals, place value, and rounding with a five-question interactive. A tool with movable parts assists scholars in answering questions—multiple-choice and true or false. A discussion question...
Math Learning Center
Grade 5 Supplement Set A3 – Number and Operations: Estimating to Multiply and Divide
Teach young mathematicians that sometimes just getting close to the exact answer is perfectly fine, by using this collection of estimation worksheets.
CK-12 Foundation
Fraction Rounding to the Nearest Half: Beaker Math
Rounding fractions is the focus of a six-question interactive designed to boost concept proficiency. A measured beaker's water level increases and decreases as mathematicians move the tool to represent specific fractions. Questions...
Curated OER
Rounding and Subtracting
Common Core is all about getting your learners to open their minds and think about the why and how. This problem has them thinking about unknown numbers and their relationship with one another when we round and subtract. They will have...
Curated OER
Homework: Simple Rounding to 10
In this simple rounding worksheet, students solve 12 different problems that include rounding to the nearest ten in each. First, they write the ten nearest to the number on a number line. Then, students identify the number in each box...
Curated OER
Rounding Different Lengths
In this rounding off numbers instructional activity, students practice rounding off thirty-four numbers to different forms of centimeters and millimeters online. Students check their answers online as they go.
Curated OER
Estimate the Difference
In this estimation learning exercise, students estimate the difference by rounding each two-digit number to the nearest ten. Students complete ten estimation problems.
Curated OER
Estimating
A good estimator usually has a good number sense. Make good estimators out of your class with this fun estimation activity. They review words that express estimation, estimate the number of three different sets, and then estimate the...
Curated OER
Estimating with Rational Numbers
Students explore the concept of rounding. In this rounding lesson plan, students round fractions and mixed numbers. Students estimate the sums, differences, products, and quotients of rounded fractions and mixed numbers.
Curated OER
Rounding Decimals
Fourth graders explore rounding a price given in dollar and cents to the nearest dollar. In this math lesson, 4th graders discover how to round to the nearest dollar. Additionally, students practice rounding money for objects that they...
EngageNY
Grade 5 Math Module 1, Topic C, Lesson 7
Step up or step down to rounding. Using a vertical number line, the instructional activity shows pupils the significance of rounding up or rounding down. Teachers encourage scholars to write the number in unit form and decide which form...