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
Rounding Money
Simplify money math with these 27 rounding practice problems, split into three sections. For the first part, scholars round nine money amounts to the nearest dollar. The next second has them round to the nearest 10 dollars, and finally...
Curated OER
Rounding to the Nearest Tens of Hundreds (In Words)
Practice rounding with these word-form problems. There are ten sentences here, each with one two or three-digit number to round. Learners round to either the nearest tenth or hundredth. The wording may be confusing, as it instructs them...
Curated OER
Estimating
In this addition worksheet, students estimate the value of the addition problems to the nearest 10. Students complete 8 estimation problems.
Curated OER
Rounding to the Nearest Ten
Third graders review rounding to the nearest ten. In this rounding lesson, 3rd graders use a hundred chart to help them in rounding to the nearest ten. Additionally, students practice rounding on the computer.
Curated OER
Round Each Number to the Nearest Ten
In this problem solving activity, 2nd graders practice rounding off 15 2 and 3 digit whole numbers to the nearest ten. Students write their answers on the lines provided.
Curated OER
Rounding To The Nearest Ten And Hundred
In this rounding to the nearest ten and hundred worksheet, students, with a partner, calculate the answers to nine word problems or mathematical equations dealing with estimation.
Primary Resources
Primary Resources: Rounding Numbers and Estimating
A large selection of teacher resources to help teach and review the concepts of rounding and estimating. There are many worksheets and a few PowerPoint presentations.
Quia
Quia: Decimal and Whole Number Jeopardy
You can use this web site to compare and round numbers and to also practice rounding whole numbers and decimals. You can just play by yourself or with another player! See how many points you can get.
NumberNut
Number Nut: Rounding Numbers to the Nearest Ten
Practice your rounding skills through this online quiz. Round each number to the nearest ten, and select the correct answer of the three choices given. There are ten random questions. Immediate feedback is given.
NumberNut
Number Nut: Rounding Numbers to the Nearest Ten Memory Challenge
Play this online memory game by flipping cards and selecting pairs that match by rounding one of the numbers to the nearest ten. Eliminate pairs and practice your rounding skills.
History is Fun
Jan Brett: Seashell Rounding Activity
Sharpen your rounding skills with this interactive game based on Jan Brett's, Comet's Nine Lives. Round correctly to the nearest ten and earn a sand dollar for each correct response. Immediate feedback provided.