National Security Agency
Borrowing from Our Neighbors
Young mathematicians explore two-digit subtraction. They will investigate multiple ways to subtract numbers involving regrouping. Resources are provided.
Math Salamanders Ltd.
Column Addition - Five Digits Sheet 2
In this column addition with a five-digit worksheet, students solve 15 addition problems, carrying when needed; some problems have three addends.
Curated OER
Addition Word Problems
In this addition problem solving activity, students read and solve five addition word problems. The addition word problems focus on adding thousands. There is an area on the activity for students to show all work.
Curated OER
Addends with Spiffy
Students solve single variable equations. In this missing addend lesson, students solve problems with missing addends. Students create a function box to help study numerical reasoning.
Curated OER
Tens and Ones
Learners view three problems involving adding or subtracting with ones and tens. Each problem is followed by an explanation and an answer as to how the problem should be done. Note: This resource contains incorrect grammar and could be...
Curriculum Corner
Spring Fling Math and Literacy Centers
Fling your class into spring with a set of math and literacy center worksheets. Learners will enjoy the variety with sheets that practice multiplication, missing addends, before/after and more/less than number comparisons, as well...
Curated OER
Addition Drills
Begin adding two-digit numbers with young mathematicians using this set of straightforward equations, none of which require regrouping. All have two-digit addends, and one sum is a three-digit number. Scholars can reference three...
Curated OER
Finding 10s
For beginners to addition, sets of objects are the ideal way to make this concept understandable. For each of these sets they ring 10 and count the remaining. Then, scholars fill in the addends as 10 and the remaining number. The sums...
Curated OER
Making 10 Packs Worksheet
The soup factory is missing cans in its 10-packs! Scholars take on the challenge as they figure out how many more cans are required to complete these four 10-packs. Encourage them to draw the extra cans for added comprehension. It would...
CK-12 Foundation
Values Written as Powers: Binary Numbers 1 to 8
A six-question interactive tasks scholars with adding binary numbers one through eight. A tool acts as a visual aid to showcase the patterns made when working with base—2, digits zero and one. Question types include fill in the blank,...
Arcademics
Hungry Puppies
It all comes down to the treats. Individuals compete to find decimals' addends to arrive at a given sum. Pupils click on two dog treats with values that add to the target number. Each round contains the same sum and lasts a minute, and...
Curated OER
Math in English Skills I Exercise Book: Addition and Subtraction
Whether your pupils need extra help or they simply need to practice their basic computation skills, this packet will do the trick. It includes a written rationale, answer key, and over 10 pages of double-digit addition and subtraction...
Curated OER
Circle the Wagons a Number is Missing
Second graders have an opportunity to work in pairs as they search for the missing addend to complete a mathematical sentence. They identify and demonstrate the ability to change the order of the addends and still produce the same sum....
Curated OER
Adding with Different Numbers of Digits
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...
Curated OER
Missing Addends to Equal Equations
In this missing addends worksheet, students fill in the missing addends to the problems so that there are equal equations on both sides of the equals sign.
Curated OER
Addition with Three Arguments
In this addition practice activity, students solve 40 problems that require them to add 3 addends. The addends have 1 and 2-digit numbers.
Curated OER
Complete Number Sentences
In this addition instructional activity, students solve 14 problems in which the missing addend in an addition problem is filled in. All problems will have a sum of 100.
Curated OER
Addition - Three 1-Digit Numbers
In this addition practice worksheet, students practice their computation skills as they solve 30 problems that require them to add 1-digit numbers. Each problem has 3 addends.
Curated OER
Horatio's Ratios
View a PBS video entitled Horatio's Drive and explore Horatio's Ratios. Collaborative learners form groups to use Mapquest to determine distances covered. They generate the mathematical averages, ratios, and rates in order to calculate...
Curated OER
Complete the Number Sentences
In this addition worksheet, students use three digit addition and solve for missing addends. Students master 15 problems filling in the missing numerals for each.
Curated OER
Addition - Three Digit Addends
For this addition worksheet set, students find the sums in 480 horizontal addition problems. They work with three digit addends and some of the problems require regrouping.
Curated OER
Addition Practice- Fill In the Missing Number- Three Digit Addition
In this fill in the missing number addition worksheet, 3rd graders find the value of the missing number in 18 addition problems. They are given the sum and find a missing digit in one of the three digit addends.
Curated OER
Addition: 0 to 5 With a Number Line
In this addition facts worksheet, students solve 12 problems in which numbers from 0 to 5 are added. There is a number line at the top of the page for students to use.
Curated OER
Number Line Addition
In this addition activity, 2nd graders add single digit numbers. Students complete 12 horizontal problems using the number line provided at the top of the page.