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Worksheet
Curated OER

One and Tens Place Value

For Students 1st - 3rd
Counting is much easier when the objects are arranged in groups of 10! This place-value practice sheet helps young mathematicians grasp ones and tens place value through three exercises. First, they complete three missing addend...
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Worksheet
Curated OER

Make Ten Guided Lesson

For Students K - 1st
Use these missing-addend problems to help your beginning mathematicians practice addition facts. They read sentences and solve, making 10 from different single-digit numbers. Each of these four problems is formatted differently, so the...
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Worksheet
Curated OER

Add and Subtract within 20

For Students 1st - 2nd
Here is a more interesting way to practice addition and subtraction number sentences. Learners complete two sum boxes, adding across and down then totaling for a final sum. They do the same with subtraction in two more boxes. Finally,...
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Worksheet
Curated OER

Missing Tens

For Students 1st - 2nd
Foster mental math skills with this activity; combine with 10-rods to modify. Twenty problems provide plenty of practice to master subracting by tens. Missing addends promote algebraic thinking. 
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Worksheet
Curated OER

Missing Addend Addition Using Math Counters

For Students K - 1st
In this missing addend addition worksheet, students fill in the missing addend in 6 problems. Math counting blocks are provided to solve the 1-digit problems.
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Worksheet
Curated OER

Missing Addends-2 Through 10

For Students 1st - 2nd
For this missing addend worksheet, students fill in the missing addend needed to arrive at a given sum, using numbers 2 through 10.
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Worksheet
Curated OER

Missing Addend (2 through 5)

For Students 3rd - 4th
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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Worksheet
Curated OER

Addition: Missing Addends

For Students 1st - 3rd
In this addition practice learning exercise, students solve 32 problems that require them to identify the missing addends in the addition trees.
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Worksheet
Curated OER

Missing Addend (10-18)

For Students 3rd - 4th
For this addition worksheet, learners practice their addition skills. Students complete the worksheet by finding the missing addend.
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Worksheet
Curated OER

Addition: Fill in the Missing Addend

For Students 1st - 2nd
In this addition activity, students fill in a missing addend to arrive at a given sum, 7 problems total. A reference web site is given for additional activities.
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Worksheet
Curated OER

Subtraction and Unknown Addends

For Students 1st - 3rd
The missing addend strategy is helpful to young mathematicians approaching subtraction. This worksheet walks learners through the required steps, solving the problems with them. They examine situations with one addend and a sum provided,...
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Worksheet
Curated OER

Addition: Missing Addends Tens and Ones

For Students 2nd - 3rd
In this missing addend worksheet, students fill in missing addends to arrive at given sums. All numbers are 2-digits. A reference web site is given for additional activities.
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Worksheet
Curated OER

Adding Up

For Students 1st - 2nd
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...
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PPT
Curated OER

Inverse

For Teachers 2nd - 4th
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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Worksheet
Curated OER

What's Missing?

For Students K - 2nd
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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Worksheet
Curated OER

Missing Sums and Addends

For Students 2nd - 3rd
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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Worksheet
Curated OER

Missing Sums and Addends

For Students 5th - 6th
In this missing addends worksheet, learners fill in the missing sums and addends for the addition questions. Students solve 20 problems.
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Lesson Plan
Curated OER

Missing Sums and Addends

For Teachers 2nd - 3rd
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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Worksheet
Curated OER

Finding 10s

For Students 1st
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...
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Lesson Plan
Curated OER

Out of Sight Missing Addends

For Teachers 7th - 11th
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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PPT
Curated OER

Solving Equations

For Teachers 3rd - 5th
How do you solve a problem when a symbol or letter is used in place of a missing number? Build algebraic reasoning and problem solving skills with this presentation that explains three methods for finding a missing variable. The guess...
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PPT
Curated OER

Number Bonds to 10: Game

For Teachers 1st - 2nd
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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Lesson Plan
Curated OER

Bears in a Box

For Teachers 1st
First graders count bears to predict missing addends. They analyze the missing addend sentence: 7 + ? = 10 and count up from 7 to 10 and check to see if there are 3 bears in the box.
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Worksheet
Curated OER

Review of Addition Facts

For Students 1st
In this addition learning exercise, 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...

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