Curated OER
Using a Round-O-Meter to Estimate
Explore the concept of rounding numbers to the nearest dollar or dime. Youngsters use a "round-o-meter" to determine which direction to round a number. They make round-o-meters out of a piece of paper, a piece of string, and a paper clip.
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.
Charleston School District
Comparing and Ordering Irrational Numbers on a Number Line
Estimating the value of numbers is much harder than it sounds! Scholars compare and order the value of numbers presented in different forms including fractions, decimals, roots, integers, and pi. This builds on the previous lessons in...
Curated OER
Goldentail's Rounding Railroad
In this number puzzle worksheet, students solve 24 equations in each of two sets of multiplication and division problems. They circle each answer and round them to the nearest whole number. They use the secret code that is shown in a box...
Curated OER
Square Roots and Real Numbers
In this square roots and real numbers learning exercise, 9th graders solve and complete 12 different problems that include types of numbers. First, they find each square root, rounding to the nearest hundredth. Then, students evaluate...
Kuta Software
Proportion Word Problems
In this proportion word problem worksheet, students read real-life problems and solve proportions. This four-page worksheet contains 18 problems. Answers are provided on the last page.
Curated OER
Add & Subtract Fractions w/Unlike Denominators, 2
Students use several examples to create a method for adding and subtracting fractions with unlike denominators. They present these methods to the class and then practice applying methods to sample problems.
Curated OER
Estimate Quotients
Fifth graders have to use division to solve problems in everyday situations. This worksheet on estimation and division has students practice these skills using real-life examples. The worksheet is part of the Houghton Mifflin math series...
Curated OER
Uncertainty Worksheet
In this uncertainty worksheet, high schoolers solve 8 problems of addition and subtraction using the rules for uncertainty notation. They do the same for 7 problems for multiplication and division. Students add, subtract, multiply and...
Curated OER
Find The Best Estimate
In this math worksheet, students find the best estimate by using the skill of rounding. The answers are written in the spaces at the bottom of the page.
Sophia Learning
Sophia: Subtracting W/ Significant Figures: Lesson 2
This lesson should help a learner understand how to determine the appropriate amount of significant figures when subtracting numbers. It is 2 of 4 in the series titled "Subtracting w/ Significant Figures."
Sophia Learning
Sophia: Adding With Significant Figures
A brief presentation helping the learner understand how many significant figures to use when adding numbers.