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Interactive
Scholastic

Study Jams! Estimate Sums & Differences of Whole Numbers

For Students 4th - 6th Standards
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...
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Lesson Plan
Curated OER

Rounding Whole Numbers; Estimating Sums And Differences

For Teachers 6th - 9th
In this rounding whole numbers and estimating sums and differences worksheet, students problem solve and calculate the answers to forty two mathematical equations.
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Worksheet
Curated OER

Estimating Sums of Money

For Students 4th - 6th
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...
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Worksheet
Curated OER

Estimating Sums and Differences

For Students 4th - 6th Standards
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...
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Lesson Plan
PBS

Estimating Profit from a Job

For Teachers 5th - 8th Standards
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...
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Worksheet
Curated OER

Estimate Sums and Differences

For Students 1st - 3rd
In this estimating sums and differences practice learning exercise, students sharpen their problem solving skills as they solve 6 story problems.
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PPT
Curated OER

Rounding

For Teachers 2nd - 4th Standards
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...
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Lesson Plan
Curated OER

Estimating Sums and Differences

For Teachers 3rd - 4th
For this math worksheet, students learn to estimate sums and differences by completing step by step exercises. There is one word problem which is the example, and then students can choose from other estimation activities to do with a...
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Lesson Plan
EngageNY

Sums and Differences of Decimals

For Students 6th Standards
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....
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Worksheet
Curated OER

Estimate Sums: Practice

For Students 3rd - 4th
In this estimating sums worksheet, students round each addend to the nearest ten and then estimate the sums. Students finish with one test prep question by estimating for the sum.
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Worksheet
Curated OER

Estimate Sums: Reteach

For Students 3rd - 4th
In this estimating sums worksheet, learners review two steps to help them estimate to find sums. Students then round each addend to the nearest ten and use the number line for help. Learners estimate the sums and write the numbers on the...
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Worksheet
Curated OER

Estimate Sums: Homework

For Students 4th - 5th
In this estimating sums instructional activity, students round each addend to the nearest ten using the number lines. Students then estimate the sum for each addition problem.
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Worksheet
Curated OER

Estimate Sums: Problem Solving

For Students 3rd - 4th
In this estimating sums instructional activity, students use the table with point totals from a ring toss game. Students use the total points to estimate the sums for each word problem.
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Worksheet
Curated OER

Estimate Sums

For Students 3rd - 5th
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.
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Worksheet
Curated OER

Estimate Sums

For Students 2nd - 3rd
In this estimating sums worksheet, students solve the six word problems using the information within the problem to estimate the sums.
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Lesson Plan
Curated OER

A Sum of Functions

For Teachers 9th - 12th Standards
Collaborative learners will see the geometric addition of functions by graphing the sum of two graphed curves on the same coordinate plane. This task then naturally flows into giving learners the algebraic representation of the curves...
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Worksheet
Curated OER

Estimating Sums

For Students 3rd
For this estimating to ten and hundred worksheet, 3rd graders estimate 16 math problems by rounding to the nearest ten and 4 by rounding to the nearest hundred. Students answer 1 word problem and 2 multiple choice questions relating to...
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Worksheet
Curated OER

Estimating Sums and Differences

For Students 4th
In this estimation activity, 4th graders estimate the sum or difference of 15 math problems. Students write their answers underneath each math problem on the activity.
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Lesson Plan
Curated OER

Estimating Solutions to Word Problems

For Teachers 4th
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.
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Worksheet
Curated OER

Estimating Fractions and Sums

For Students 4th - 5th
What is a quick comparison, and how can it help you estimate sums and differences? For this estimation worksheet, learners estimate fractions in addition problems. They complete four problems where they estimate the sums after reviewing...
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Lesson Plan
Curated OER

Rounding and Subtracting

For Teachers 6th - 8th Standards
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...
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Worksheet
Curated OER

Show What You Know: Estimate: Enrichment

For Students 4th - 5th
In this estimating sums instructional activity, students write a greater than or less than sign to solve the addition sentences. Students first use estimation to help them compare the numbers.
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Worksheet
Curated OER

What Do You Think?

For Students 2nd - 3rd
In this estimating sums and differences worksheet, learners solve 6 problems in which the answer to a 3 digit addition or subtraction problem is estimated. Students then solve the problem for an exact answer. There will be carrying and...
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Interactive
CK-12 Foundation

Area Sums: Estimation with Rectangles

For Students 11th - Higher Ed
The more rectangles, the better the estimate. Using the interactive, pupils explore estimating the area under a curve using left-hand sums. Learners respond to challenge questions on how to get better estimates using the same technique.

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