Curated OER
Missing addend - sums with 8 and 9
For this missing addend worksheet, 2nd graders are given the sums of 8 or 9 and they have to write the missing addends to the addition problem given to them represented by cubes. Students complete 16 problems.
Curated OER
Estimating Fractions and Sums
What is a quick comparison, and how can it help you estimate sums and differences? For this estimation learning exercise, learners estimate fractions in addition problems. They complete four problems where they estimate the sums after...
Curated OER
Find the Sums (Under 100)
All of these sums are under 100: learners practice with three types of addition problems, each with two equations. First, they add a double-digit and single-digit number. Then, scholars add two double-digit numbers, one being a multiple...
Curated OER
Estimating Sums and Differences
Work on rounding, estimating, adding, and subtracting with a helpful math worksheet! Fifth graders study different sets of addition and subtraction problems, and after rounding each number to the leading digit, they estimate what the sum...
Curated OER
Using Addends and Sum/Using Subtrahend, Minuend, and Difference
What is an addend? What is a sum? Review this math terminology on the top half of the worksheet before practicing basic addition.
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
Sums of 8 and 9
In this addition worksheet, students solve a total of 25 problems using 1-digit numbers with sums of 8 or 9. regrouping. A website reference for additional resources is given.
Curated OER
Sums of 8 and 9
In this addition worksheet, students solve a total of 100 problems using 1-digit numbers whose sums equal 8 or 9. A website reference for additional resources is given.
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
Odd Or Even Sums
Build strong number sense through pattern recognition. Learners investigate whether the sum of each problem will be odd or even if they add certain combinations of numbers together. They complete 12 problems, adding odd+odd, odd+even, or...
Curated OER
Finding Missing Sums and Addends
In this sums/addends worksheet, students find missing sums and addends in a set of 20 problems. Problems add 1 and 2-digit numbers. Answers included on page 2.
Curated OER
Sums of 8 and 9
In this addition worksheet, students solve a total of 50 problems that have sums of either 8 or 9. A reference website for additional resources is given.
Education Development Center
Sum of Rational and Irrational is Irrational
Sometimes the indirect path is best. Scholars determine whether the sum of a rational number and an irrational number is irrational. Reading a transcript of a conversation between classmates leads to an indirect proof of this concept.
Curated OER
Estimating Sums of Money
By rounding, scholars find that adding money amounts becomes a breeze! They round two and three-digit numbers (with decimals) in these addition problems to get approximate sums. For each, mathematicians write the new addition equation...
Education Development Center
Consecutive Sums
Evaluate patterns of numbers through an engaging task. Scholars work collaboratively to determine a general rule reflecting the sum of consecutive positive integers. Multiple patterns emerge as learners explore different arrangements.
Math Worksheets Land
Unknown Numbers in Sums and Differences
You've hit the word problem jackpot with this set of 10 addition and subtraction scenarios! For each, learners have to find a missing number. Sometimes it is the sum or difference, and for others, an addend or minuend. For each, there is...
Houghton Mifflin Harcourt
Sums to 100
Whether it's counting marbles, flowers, or playing cards, small objects can add up to great sums. Learners work six story problems to practice addition to 100. Some regrouping is required, along with distinguishing useful from irrelevant...
Curated OER
Hidden Sums
For this finding the sums 7 and 8 worksheet, 1st graders look over two boxes of numbers, find the sums of 7 and 8 in each one and circle pairs of numbers that make each sum.
Curated OER
Sum of Interior Angles
In this sum of interior angles worksheet, 10th graders solve 10 different problems that are related to determining the sum of various interior angles in figures. First, they determine the sum of the interior angles of a dodecagon. Then,...
Curated OER
Missing Sums and Addends
In this recognizing two-digit addition facts worksheet, learners use a number line and addition facts to find the missing sums or addends in problems with and without regrouping. Students solve 20 problems.
Curated OER
Hands-On: Sums of Angle Measures
In this angle measures worksheet, students solve six word problems where they are given 6 different polygons, some of which are complex, and must determine angle measures in order to arrive at a solution.
Curated OER
Errors in Riemann Sums
In this Riemann Sums worksheet, students use the Riemann Sums method to approximate the area under the curves. This two-page worksheet contains three problems.
Curated OER
Riemann Sums and Error Stacks
In this Riemann sums instructional activity, students use accumulation to find the estimate for the area of a given shape. Students use Riemann sums to estimate the area under the curves and error stacks to bound the error of their...
Curated OER
Estimate Sums
In this estimating sums worksheet, students round numbers to the greatest place and then add them to solve 23 problems. Students also solve 2 test prep questions.