Curated OER
Add and Subtract Two-Digit Numbers
Learners complete two double-digit problems, one addition and the other subtraction. They also determine the missing addend in two additional problems. An explanation as to how to solve both problems is included.
Curated OER
Find the Missing Addend
In this find the missing addend worksheet, 1st graders solve the equation by filling in the missing addend for 10 equations with addends from 0-9.
Curated OER
Addition: Fill in the Missing Addend
For this addition worksheet, students fill in a missing addend to arrive at a given sum, 7 problems total. A reference web site is given for additional activities.
Curated OER
Addition: Number Bonds to 30
In this addition worksheet, students fill in the missing addend to an addition problem that adds up to 30. This number could be a one or two digit number. Students complete 41 missing addend problems.
Curated OER
Addition: Number Bonds to 100
In this addition instructional activity, students fill in the missing addend for problems that add up to 100. Students complete 41 problems.
Curated OER
Add and Subtract within 1000
There are some missing parts in these addition and subtraction problems. Scholars start by completing two number sentences, each involving all three-digit numbers. Then, they examine another number to determine the value of the tens...
Math Worksheets Land
Add and Subtract within 100- Guided Lesson
Word problems are the name of the game here, and each one comes with an image to help learners visualize the math operation. Careful, though; the visual for the first scenario is confusing. The problem gives a total number of sports...
Curated OER
Missing Addend - 2 through 5
In this missing numbers worksheet, 2nd graders fill in the missing numbers in the correct place value spot according to the blocks given. Students complete 16 problems.
Curated OER
Number Bonds to 10: Game
Knowing number bonds that make 10 is a good way to build number sense and can help in solving basic addition and subtraction problems. Kids review number bonds, then play a game where they are given a number and try to shout out the...
CK-12 Foundation
Decimal Addition: Adding Little Pieces
A five-question interactive test scholars' knowledge of adding and subtracting decimals. A tool aids in problem-solving with movable parts that reveal addends and sums. Question types include one discussion, fill and in the blank, and...
Curated OER
Add or Subtract (up to 50)
Do you add or subtract? It's up to your mathematicians as they fill in the symbol for 16 equations to make them true. The numbers in this section don't exceed 18. Next, learners answer six word problems by determining the missing addend...
NTTI
Putting Together Ten
Groups explore sets of 10 items in two varieties (i.e. 3 white buttons and 7 black ones, or 5 bears and 5 bunnies). They brainstorm about their objects, write math sentences to represent what they have, and report their discoveries to...
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
Addition: Missing Addends Tens and Ones
In this missing addend instructional activity, students fill in missing addends to arrive at given sums. All numbers are 2-digits. A reference web site is given for additional activities.
Curated OER
Choose the Operation: Plus or minus (up to 100)
Investigate the relationship between addition and subtraction as scholars fill in these number sentences, each of which is missing a symbol. Is it a subtraction or addition equation? There are 20 of these to start, all written...
Curated OER
Review of Addition Facts
In this addition worksheet, 1st graders write down the addends that make up 5 and 6. They match addition problems to the sums 5 and 6, and find the missing addends in 10 problems. They compare equations to 5 and 6 using the symbols for...
Curated OER
Out of Sight Missing Addends
Students explore solving missing addend problems. Using manipulatives, students solve addition problems. They create a picnic basket-shaped math journal and write a summary of their activities. Students write number sentence that match...
Curated OER
Missing Addends 2-5
In this missing addends worksheet, students fill in a missing addend to arrive at a given sum. Missing addends are numbers 2-5. A reference web site is given for additional activities.
Curated OER
Missing Addends-Sums with 8 and 9
For this missing addend worksheet, students fill in one missing addend in a problem in order to arrive at a given sum. All sums equal either 8 or 9. Worksheet has a reference web site for additional activities.
Curated OER
Missing Addends 2-5 Worksheet #2
In this missing addends worksheet, students fill a the missing addends to reach sums between 2 and 5. A reference web site is given for additional activities.
Curated OER
Missing Addend-2-10
In this missing addend worksheet, students fill in the missing addends to reach given sums. Worksheet utilizes numbers 2-10. A reference web site is given for additional activities.
Curated OER
Missing Addends
For this addition worksheet, 2nd graders work toward finding the missing addends. students complete 3 problems using the given problems and pictures for visual assistance.
Curated OER
Addition: Equation to 10 (Missing Addend)
In this addition skills worksheet, students fill in the missing addends in 16 problems. Math counting blocks are provided in each problem.
Curated OER
Missing Number Sum Activity
In this missing number worksheet, students fill in missing addends to reach the sum of 19, 8 problems total, then answer additional related questions.