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Interactive
CK-12 Foundation

Addition and Subtraction of Polynomials: Sliders

For Students 8th - 10th Standards
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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Interactive
Arcademics

Hungry Puppies

For Students 5th - 6th Standards
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...
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Worksheet
Curated OER

Basic Addition Practice: Missing Items

For Students 1st - 2nd
In this addition worksheet, students complete "picture" math sentences, then complete the number problem. Students view a card with a number of dots on it and a problem with a missing addend. Students draw the number of dots necessary to...
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Worksheet
Curated OER

Addition: How Many Ways?

For Students 2nd
In this addition worksheet, 2nd graders study the various ways to add with different addends. Students are provided with 4 digits in which to write as many possible addition problems as can be made.
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Worksheet
Curated OER

Missing Numbers in Two Digit Addition Worksheet #9

For Students 1st - 3rd
In this addition instructional activity, students solve 20 problems in which missing numbers in two digit addition problems are filled in. There is no regrouping on the page.
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Worksheet
Curated OER

Add Groups of Ten

For Students 2nd - 3rd
In this addition instructional activity, students add groups of tens and their remainders to determine the missing addends in the pairs of 2-digit problems and then find the sums. Students solve nine problems.
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Worksheet
Curated OER

Missing Subtraction Facts to 20

For Students 1st - 2nd
In this subtraction worksheet, students use the given numbers to complete and solve the horizontal subtraction equations. Students solve 20 problems.
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Worksheet
Curated OER

Equations

For Students 3rd - 4th
For this finding the missing number worksheet, students use the total number plus one addend to find the number that is missing. Students solve 10 problems.
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Worksheet
Curated OER

Equations 2

For Students 3rd - 4th
In this finding the missing number worksheet, students use the total number and one addend to find the missing number. Students solve 10 problems.
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Worksheet
Curated OER

Addition: Number Bonds to Fifty

For Students 2nd - 4th Standards
In this identifying numbers that total fifty worksheet, students use an addend and the sum fifty to write the missing number. Students solve 41 problems.
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Worksheet
Curated OER

Smart Archer

For Students 3rd - 5th
In this addition activity, students solve 8 problems where they are given a target where the sections are labeled with a certain number of points. Students are given the number of arrows and the total number of points for each target. ...
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Worksheet
Curated OER

Mixed Review

For Students 1st - 2nd
In this math instructional activity, students solve the problems using the operation of addition to fill in the missing addends. They also apply some basic knowledge of geometry to solve the second set of questions.
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Worksheet
Curated OER

It All Adds Up- Puzzle #28

For Students 3rd - 4th
In this addition puzzle worksheet, students solve a 12 space addition square in which rows and columns add up to equal the numbers given. Students supply the missing addends.
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Worksheet
Curated OER

Word Problems and Patterns 4

For Teachers 3rd
In this mathematics learning exercise, 3rd graders solve the problems and write a missing addend sentence for each as needed. Then they subtract mentally and figure out the patterns for each and continue them on.
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Worksheet
2
2
DK Publishing

Addition, Multiplication, and Division

For Students 3rd - 4th Standards
These equations are missing numbers, and scholars must process multiple operations to complete them. There are addition, multiplication, and division problems here, each missing an addend, divisor, or factor. After completing 24 of these...
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Worksheet
Curated OER

Adding Three Small Numbers

For Students 2nd
In this number sentence worksheet, 2nd graders complete 5 problems where they fill in the missing 3rd addend after being given 2 addends and a sum. 
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Worksheet
Curated OER

Year 6 Booster pg. 6

For Students 3rd
In this mixed practice worksheet, 3rd graders give 3 addends to complete two equations and write the missing numbers in 7 equations.
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Worksheet
Curated OER

Addition - Up to 12

For Students 1st - 2nd
In this addition learning exercise, students solve the horizontal addition problems. Students count on from the addend given to get the find the missing addend.
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Worksheet
Curated OER

Addition: Equation to 10

For Students 1st - 2nd
In this addition skills worksheet, students use their problems solving skills to fill in the missing addends in 32 problems.
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Worksheet
Curated OER

Multiplication - 2 times table sheet 1

For Students 2nd - 3rd
In this multiplication activity, students multiply the number 2 by the numbers 0 through 10, and fill in missing addend multiplication problems by 2 as well. Students complete 30 problems.
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Worksheet
Curated OER

Place Value - tenths sheet 5

For Students 5th - 8th
In this place value learning exercise, students add whole numbers to numbers that have decimals to the tenths place. Students complete 40 problems. Half of these problems they fill in missing addends.
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Worksheet
Curated OER

One digit addition problems

For Students 1st - 2nd
In this addition worksheet, students solve the one digit addition problems for the sums and missing addends. Students complete 10 multiple choice questions.
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Worksheet
Curated OER

Sums of 10

For Students 2nd - 3rd
In this addition worksheet, students supply the missing addends necessary to arrive at the sum of 10. A website reference for additional resources is given.
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Worksheet
Curated OER

Addition-Mixed Numbers

For Students 4th - 5th
In this addition of fractions worksheet, students complete 20 problems, supplying the missing addend in a mixed number problem.

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