Curated OER
Choose the Operation: Plus or minus (up to 100)
Investigate the relationship between addition and subtraction as scholars fill in these number sentences, each of which is missing a symbol. Is it a subtraction or addition equation? There are 20 of these to start, all written...
Curated OER
Complete the Number Sentences
In this addition instructional activity, students use three digit addition and solve for missing addends. Students master 15 problems filling in the missing numerals for each.
Curriculum Corner
Second Grade Summer Math Practice Book
Stop the summer lag with a set of second grade Common Core based math practice sheets. Learners fill in hundreds charts with missing numbers up to 1,000. They practice writing numbers in standard, expanded, and word form. Children also...
Curated OER
Addition: Missing Sums and Addends
In this addition learning exercise, students fill in missing sums and addends in a set of 20 problems. Some problems involve regrouping, answers are included on page 2.
Curated OER
Two Digit Addition Worksheet #3: Find the Missing Number
In this addition activity, students solve 20 problems in which a missing number in the problem is filled in. Students analyze the two numbers that are provided and fill in the third to make the problem correct.
Curated OER
Missing Number Addition
In this missing number worksheet, students fill in missing addends to complete 5 simple problems. An answer key is included on page 2.
Curated OER
Mixed Review
In this math worksheet, 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.
EdHelper
Addition: Missing Numbers
For this addition worksheet, students look at pictures of blocks and their numerical values, then find the missing addend. Worksheet is labeled "sample" and is part of a subscription site with links.
Curated OER
Missing Sums and Addends
In this recognizing two-digit addition facts worksheet, learners use a number line and addition facts to find the missing sums or addends in problems with and without regrouping. Students solve 20 problems.
Curated OER
The Missing Monkey Mystery
Second graders explore number values by completing number sentences. In this math functions lesson, 2nd graders identify whole numbers by using a visual aide and practice filling in the blank in number sentences. Students utilize their...
Curated OER
Complete Number Sentences
In this addition activity, students solve 14 problems in which the missing addend in an addition problem is filled in. All problems will have a sum of 100.
Curated OER
Place Value - Hundreds, Tens, and Ones 4
In this place value worksheet, students add numbers that are all in different place values and fill in missing addends for different place values. Students complete 40 problems where the numbers are in expanded notation form.
Curated OER
Adding Three Small Numbers
In this number sentence activity, 2nd graders complete 5 problems where they fill in the missing 3rd addend after being given 2 addends and a sum.
Maths Blog
Make 20
There are quite a few ways to make the number 20 through addition. Learners fill in missing addends to reach the sum of 20 then answer additional related questions. This is a good resource because it has the class both add to 20 and...
Curated OER
Addition: Equation to 10
In this addition skills worksheet, students use their problems solving skills to fill in the missing addends in 32 problems.
Curated OER
Missing Numbers in Two Digit Addition Worksheet #9
In this addition worksheet, students solve 20 problems in which missing numbers in two digit addition problems are filled in. There is no regrouping on the page.
DK Publishing
Fishing for 10
Young counters will enjoy this beginning addition activity; they get to color as they go! For each set of 10 fish they color some green and leave some white. Then, they fill in the blanks to create an addition sentence with the sum of...
Curated OER
Add or Subtract (up to 50)
Do you add or subtract? It's up to your mathematicians as they fill in the symbol for 16 equations to make them true. The numbers in this section don't exceed 18. Next, learners answer six word problems by determining the missing addend...
Concord Consortium
The Trouble with Tables
Tackle these tables. A performance task has learners complete two puzzles using addition and subtraction. They must fill in tables with missing addends, sums, minuends, subtrahends, or differences.
Curated OER
Choose a Path
In this addition worksheet, students utilize data from a map to answer 6 fill in the blank questions where they provide the missing addends to addition problems.
Curated OER
Find Missing Sums and Addends-No Regrouping
In this addition activity, students find missing sums and addends in a set of 20 problems without regrouping. Answers are included on page 2.
Curated OER
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...
Curated OER
Adding with Different Numbers of Digits
Expand addition concepts by challenging your pupils with these multi-digit addends. They add up numbers with up to seven digits, regrouping where needed. The first six are written vertically and the next two are horizontal. Make...
Curated OER
Addition Square #2
In this addition activity, students fill in the missing numbers to complete 5 addition squares. Students add across and down, filling in the addends.