Illustrative Mathematics
Find the Missing Number
First graders are asked to find the missing numbers in subtraction and addition equations. Each missing number is represented with a box and appears as an addend, subtrahend, sum, or difference.
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Missing Sums and Addends
In this missing addends worksheet, students fill in the missing sums and addends in the addition questions. Students solve 20 problems.
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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...
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Missing Addends
In this addition worksheet, 2nd graders work toward finding the missing addends. students complete 3 problems using the given problems and pictures for visual assistance.
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Ones and Tens Place Value
As scholars examine place value, these exercises help them incorporate addition and grouping. First, they answer three missing-addend questions, each with 10 as the given addend. Because all of the missing numbers are single-digit, this...
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Missing Addend (2 through 5)
In this addition worksheet, students find the missing addend in each problem. Students have thirty-two problems where they are to find the missing number that correctly completes the addition problem.
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Missing Addend (10-18)
For this addition worksheet, learners practice their addition skills. Students complete the worksheet by finding the missing addend.
CK-12 Foundation
Addition and Subtraction of Polynomials: Sliders
Slide the coefficients to determine sums of polynomials. The interactive contains sliders to change the coefficients of an addend in a polynomial addition problem. Pupils determine the coefficients of the addend to arrive at particular...
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Number Wall
Use the number wall to practice addition, evens and odds, missing addends, and doubling. Learners answer various questions based on six numbers, filling in squares with digits. They list the odd numbers and total them, then list the even...
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...
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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.
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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...
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Adding Up
Make addition visual in order to help beginners understand the concept. They add up beads on a string, examining an example before trying it on their own. Learners fill in addends and sums for these, and sometimes both. Although...
Helping with Math
Addition: Number Bonds to 20
Pupils fill in the missing addend to an addition problem that adds up to 20. This number could be a one-digit or two-digit number. They complete a total of 41 missing addend problems. Answers are available.
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Inverse
Your class can learn all about inverse operations. They will review what inverse operations are, see examples, learn how to use inverse operation to check an answer, write addition and subtraction equations in the inverse, and use the...
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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...
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Number Bonds to 10: Match the Hats
Practice and play this game to enhance your learner's ability to make the number 10 through addition. Each slide shows an equation with a missing addend and a party hat with a given number of dots, they need to determine how many dots...
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Adding and Subtracting from 10
Here is a nicely designed worksheet on adding and taking away from ten. Learners complete the simple problems with the help of a number line that appears at the top of the page. Some of the equations have a missing addend, but do have...
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What's Missing?
Add a challenge for your young mathematicians' adventures in double-digit addition. Instead of simply computing sums in the 9 problems, they work backwards to fill in blanks among the addends. Resource makes a terrific extension or...
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Addition - up to 20 sheet 5
In this addition worksheet, students complete missing addend problems where they plug in numbers 1 - 20. Students complete 40 problems.
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Addition Exercises
In this addition learning exercise, 2nd graders fill in the missing addend to the addition problems to make both sides of the equal sign equal. Students complete 7 problems.
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Missing Sums and Addends
In this missing addends worksheet, students fill in the missing sums and addends for the addition questions. Students solve 20 problems.
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Missing Sums and Addends
In this missing addends worksheet, learners fill in the missing sums and addends for the addition questions. Students solve 20 problems.
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...