Curated OER
Complete the Number Sentences
In this addition worksheet, students use three digit addition and solve for missing addends. Students master 15 problems filling in the missing numerals for each.
Curated OER
How Many More Do You Need
In this missing addends worksheet, students draw additional train cars to the existing picture to complete each addition sentence with a missing addend. Students also fill in the missing number.
Curated OER
Missing Numbers
In this basic subtraction learning exercise, students write in the missing numbers that make the subtraction equation correct. They then match the facts that go together by drawing a line between them. There are 12 problems to solve on...
Curated OER
What's the Best Name?
In this missing numbers activity, 1st graders look over 4 boxes, write in the missing numbers, find the best name for each box and color in the best circled answer.
Curated OER
Family of Four
In this fact family worksheet, students write in the missing numbers in the addition problems. They then complete each fact family. There are 6 problems on this worksheet.
Curated OER
Math Review: Estimation, Missing Numbers, Precise Calculations
In this math review worksheet, students solve 30 problems that pertain to estimation, Roman numerals, elapsed time, precise calculations of multiplication and division.
Curated OER
St. Patrick's Day Missing Digits (G)
In this St. Patrick's Day missing digits worksheet, students figure out the missing digits in twenty-two addition, subtraction and multiplication equations.
Curated OER
Missing Addend Worksheet in Column Form
In this math instructional activity, students solve 24 problems in which there is a missing addend. Students fill in the blank. The problems are 3 digit addition with carrying.
Curated OER
Fill in the Missing Numbers
In this math worksheet, students learn number sequencing by filling in the missing numbers in 8 problems. All numbers are below 10.
Curated OER
Patterns Based On Addition
In this on-line math learning exercise, 3rd graders complete 10 multiple choice questions where they find the missing number to a pattern by using addition. Students can check their answers at the end of the learning exercise.
Curated OER
Missing Numbers: 1 to 20
In this missing numbers activity, learners fill in the numbers that are missing in a series from 1 to 20. There are some numbers already there as hints.
Curated OER
Number Sequencing : Which Number Is Missing?
In this number order instructional activity, students solve 11 multiple choice on-line interactive questions. Students analyze the series of numbers that are in order without skip counting. From four choices, students mark the number...
Curated OER
Number sequence
In this number sequence worksheet, 1st graders find which numbers are missing from the houses in numbers 1 through 9. Students then cut out the houses and put them in number order.
Curated OER
Before, Between or After to 99 (3)
For this ordering numbers worksheet, students study the given number or sets of numbers and then fill in the missing number that shows the order of the numbers.
Curated OER
Missing Numbers: Perceptual Level #1
In this number order activity, students add the missing numbers by starting at the face each time. Students' objective is to recall numbers counting forwards and backwards.
Curated OER
Subtraction-- Fill in the Gaps
For this math worksheet, students practice finding the missing numbers in a subtraction problem. There are 90 subtraction problems which are written horizontally, most with 2 digits. The answers are shown, but there is a missing number...
Primary Resources
Primary Resources: Basic Addition and Subtraction
An extensive collection of teacher resources to help in teaching and reviewing the concepts of basic addition and subtraction. There are many worksheets, activities, PowerPoint presentations, smartboard activities, Word, Excel, and pdf...
CK-12 Foundation
Ck 12: Elem Math: Adding and Subtracting With Parentheses
[Free Registration/Login may be required to access all resource tools.] The resource includes a video tutorial on how to find a missing number in a multi-operational problem by working backwards. The video is followed by practice...
Math Slice
Math Slice: Math Crossword Slice Special Test
Use this interactive math crossword puzzle to build number sense skills. Simply fill in the missing numbers based on the operation. Immediate feedback given to responses.
Beacon Learning Center
Beacon Learning Center: Missing Numbers
The learning exercise has student identify the missing numbers in a number sequence.
CK-12 Foundation
Ck 12: Elem Math: Completing the Addition Sentence Sums to 20
[Free Registration/Login may be required to access all resource tools.] The video shows how to count backwards to determine the missing number in an addition problem. The video is followed by practice problems to assess student...
CK-12 Foundation
Ck 12: Elem Math: Adding and Subtracting Missing Number
[Free Registration/Login may be required to access all resource tools.] The resource is a video showing students how to find a missing number in a multi-step addition and subtraction problem using inverse operations. Adaptive practice...
University of Texas at Austin
University of Texas: Elementary Math Club: "Guess the Number" Magic Trick
Students investigate the concept of a number as a quantity. The activity has learners convert back and forth between decimal and binary expansions of numbers. The lesson plan includes an overview and a lesson toolkit.
Math Is Fun
Math Is Fun: Fill in the Missing Numbers
Click the empty spaces to be given four choices for the missing number. Choose the correct one for each of the empty spaces, then play again!