Curated OER
Making Addition Sentences True
Introduce scholars to the commutative and additive identity properties of addition with two sets of practice problems. First, they fill in the missing addend by choosing from a group of three possible answers. These six addition...
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...
Curated OER
Missing Numbers - Addition Worksheet Set
Save some trees and use virtual worksheets. Here are 6 different virtual worksheets that require learners to determine the missing addend. Each page includes 12 problems to solve.
Curated OER
Addition: Number Bonds to 10
You have the answer and a variable, but something is missing! The class fills in the missing addend in 23 practice problems that all add up to 10. This is a great way to build number sense, pattern recognition, and automaticity.
Curated OER
Solving Equations
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...
Curated OER
Unknown Addends (to 20): Count the Blank Boxes
By filling in the blank squares, learners complete five addition number sentences both visually and numerically. For each problem, a frame is filled with a certain number of images (turkeys, candles, etc.) and a certain number of blank...
Curated OER
Subtraction and Unknown Addends
A brief addition word problem has learners searching for the missing addend. They read about Mr. George, who already has five gallons of fuel in his car. Knowing the car can hold eleven gallons, they compute how many gallons he needs....
Curated OER
Subtraction and Unknown Addends
Using images helps budding mathematicians grasp difficult subtraction concepts. In this set of three word problems, they examine sets of objects which are reflected in each scenario. To approach subtraction in a more accessible way, the...
Math Salamanders Ltd.
Missing Subtraction Facts to 20 sheet 2
They can tackle this worksheet once your class has mastered basic double-digit subtraction. They'll need to find the missing subtraction facts to 20 that complete each problem.
Curated OER
Missing Addends to Equal Equations
In this missing addends instructional activity, students fill in the missing addends to the problems so that there are equal equations on both sides of the equals sign.
Curated OER
Missing addend - sums with 8 and 9
In this missing addend activity, 2nd graders are given the sums of 8 or 9 and they have to write the missing addends to the addition problem given to them represented by cubes. Students complete 16 problems.
Curated OER
Missing addend - 2 through 10
In this missing addend worksheet, students fill in the missing addends to the problems where the answers are given. Students put numbers in place of cubes to create number sentences for 16 problems.
Curated OER
Missing addend - 10 through 18
In this missing addend worksheet, students fill in the blank for the missing addend in the number sentence for answers 10 through 18. Students fill in 32 numbers.
Curated OER
Missing Addends
In this missing addends worksheet, students figure out the missing addend to an addition problem based on the pictures given to them and solve the problem. Students solve 6 problems.
Curated OER
Missing Addend - 2 Through 5
In this addition skills worksheet, students solve 16 addition problems that require them to identify missing addends using the provided math counters.
Curated OER
Missing Addend - sums with 6 and 7
In this missing addend instructional activity, 2nd graders complete the missing numbers to addition problems where sums are between 6 and 7 where the numbers are represented by cubes. Students complete 16 problems.
Curated OER
Missing Addends-Sums With 6 and 7
In this missing addend worksheet, students fill in missing numbers above pictures of blocks. Each problem has a sum of either 6 or 7. A reference web site is given for additional activities.
Curated OER
Missing Addend
In this addition activity, 2nd graders find the missing addends. Students complete 32 problems filling in the missing digit for each.
Curated OER
Missing Addend With Sums of Ten
In this addition worksheet, students find the missing addends which add up to ten. Students complete 32 problems filling in the missing digit for each.
Curated OER
Missing Addend Sums With 8 and 9
In this addition worksheet, students complete problems with sums of eight and nie. students solve 12 problems, solving for the missing addend in each.
Curated OER
Missing Addends
In this addition practice worksheet, students solve 32 problems that require them to fill in the blanks in the addition trees with the appropriate missing addends.
Curated OER
Missing Addend -2 Through 10
In this addition practice worksheet, students solve 28 problems that require them to identify the missing addends in the problems.
Curated OER
Missing addends
In this addition worksheet, students complete number sentences with their missing addends with numbers less than 15. Students complete 10 multiple choice questions.
Curated OER
Addition: missing addends
In this missing addend worksheet, students complete the missing addend for an addition problem making both sides of the equal sign equal. Students complete 6 problems.