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Assessment
Concord Consortium

The Trouble with Tables

For Students 2nd - 5th Standards
Tackle these tables. A performance task has learners complete two puzzles using addition and subtraction. They must fill in tables with missing addends, sums, minuends, subtrahends, or differences.
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Lesson Plan
Illustrative Mathematics

$20 Dot Map

For Teachers K - 2nd Standards
Challenge the addition skills of young learners with this open-ended math problem. The task is simple, get from start to finish by connecting a series of three numbers. The trick is that the sum of the numbers must be less than or equal...
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Worksheet
Math Worksheets Land

Unknown Numbers in Sums and Differences

For Students 1st - 3rd Standards
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...
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Worksheet
DK Publishing

Adding with 3-digit Numbers #2

For Students 2nd - 3rd Standards
These 25 addition problems each have two 3-digit addends, and many require regrouping. There are three examples to guide learners in all the types of problems they encounter, including the last set of five which have four-digit sums....
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Worksheet
Houghton Mifflin Harcourt

Sums to 100

For Students 1st - 2nd Standards
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...
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Worksheet
abcteach

Simple Integer Addition

For Students 2nd - 4th Standards
Add to your collection of math resources with this skills practice worksheet. Offering dozens of addition problems with sums less than 100, this resource is a simple way to hone the basic skills of young mathematicians.
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Worksheet
Curated OER

Missing Sums and Addends

For Students 3rd - 4th
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.
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Worksheet
Curated OER

Sum of Interior Angles

For Students 10th
In this sum of interior angles activity, 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,...
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Worksheet
Curated OER

Add Mixed Numbers With Like Denominators (G)

For Students 3rd - 4th
In this adding mixed numbers learning exercise, students find the sums of whole numbers and fractions with common denominators and reduce and rename the answers. Students solve 7 problems.
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Worksheet
Curated OER

Adding With Regrouping (A)

For Students 1st - 2nd
For this addition review worksheet, students use problem solving skills to solve 35 problems that require them to add 1 digit numbers with regrouping.
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Worksheet
Curated OER

One-Digit Addition; With Regrouping (B)

For Students 1st - 3rd
In this addition review worksheet, learners use problem solving skills to solve 100 problems that require them to add 1 digit numbers with regrouping.
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Worksheet
Curated OER

One-Digit Addition; With Regrouping (B)

For Students 1st - 3rd
In this addition review worksheet, students use problem solving skills to solve 64 problems that require them to add 1 digit numbers with regrouping.
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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
West Contra Costa Unified School District

Divisibility Rules Justified

For Teachers 6th - 8th
How do you know if a number is divisible? Instructors first prove the divisibility rules for three and four and then class members use this modeling to prove given divisibility rules for eight and nine either individually or in groups.
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Worksheet
Curated OER

Visual Sum and Difference Word Problems - Independent Practice

For Students 1st - 3rd
The ten prompts on this worksheet are intended for independent practice with addition and subtraction of numbers up to 3000. Space is provided for pupils to illustrate their work. The confusing wording of some the problems would be a...
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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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Writing
Curated OER

Adding with Different Numbers of Digits

For Students 3rd - 5th
Expand addition concepts by challenging your pupils with these multi-digit addends. They add up numbers with up to seven digits, regrouping where needed. The first six are written vertically and the next two are horizontal. Make...
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Unit Plan
Mathematics Vision Project

Geometric Figures

For Teachers 10th - 12th Standards
Logical thinking is at the forefront of this jam-packed lesson, with young mathematicians not only investigating geometric concepts but also how they "know what they know". Through each activity and worksheet, learners wrestle with...
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Worksheet
Curated OER

Addition with 9

For Students 1st
In this addition with 9 worksheet, 1st graders add the number nine to numbers from 1 to 10. They find the sums to 320 questions on 20 pages.
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Worksheet
Curated OER

Adding Two Numbers

For Students 3rd - 4th
Keep addition drills interesting by varying the exercises. There are four separate sections here for youngsters to solidify their understanding of adding three-digit addends. First, they calculate eight vertically aligned equations,...
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Activity
Curated OER

Dice Games

For Teachers 6th - 8th
Games and activities are wonderful for igniting interest in nearly any topic. With a pair of dice, your class will practice their basic math and social skills at the same time. Learners battle it out to see who can roll only odds or only...
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Lesson Plan
Curated OER

Math Lesson Plan: Super Easy 9 Times Tables Trick

For Teachers 2nd - 4th
Students practice their times tables. For this multiplication practice lesson, students learn and practice a method that helps them remember the 9 times table.
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Worksheet
Curated OER

Add Mixed Numbers with Like Denominators (J)

For Students 4th - 5th
In this mixed number addition instructional activity, students add the whole numbers and then the fractions in the mixed number equations. Students then reduce the fraction to solve the 14 problems.
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Worksheet
Curated OER

Add Mixed Numbers With Like Denominators (A)

For Students 5th - 6th
In this math activity, students solve 16 problems in which mixed numbers with like denominators are added. Problems are written in horizontal format.