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.
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Math Online Exercises
In this variety of online math exercises worksheet, students solve nine equations with missing digits, fifteen money problems and arranging numbers 0-9 in four original addition calculations. Students check their answers online as they go.
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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.
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Completing the Next Hundred
In this hundreds worksheet, learners fill in the missing addend and complete the hundred numbers at the end of the problems. Students complete 3 sets of problems.
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Ten Sly Piranhas: A Counting Story in Reverse
Students solve related addition and subtraction problems. In this addition and subtraction lesson, students use the book Ten Sly Piranhas by William Wise as the source of word problems for students to solve.
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Frogs in Ponds
First graders determine how numbers are made up of other smaller numbers before examining addition and subtraction. They determine the number pairs that make up a given number and determine when no other pairs can be found. They use frog...
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Number Line Addition
In this addition worksheet, 2nd graders add single digit numbers. Students complete 12 horizontal problems using the number line provided at the top of the page.
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Addition: 0 to 5 With a Number Line
In this addition facts worksheet, students solve 12 problems in which numbers from 0 to 5 are added. There is a number line at the top of the page for students to use.
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Equations in the Park
Learners explore algebraic concepts using real life situations. In this equations lesson, students develop strategies to solve missing number problems. Learners participate in a board game based on algebraic equations.
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Addition
In this addition worksheet, students count the dots on each domino and fill in the missing numbers to complete the addition facts for the 13 problems.
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Missing Values
In this missing values worksheet, students solve and complete 3 various types of problems. First, they fill in the boxes on the number lines to show how to break addition and subtraction down. Then, students complete the missing values...
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Missing Addends
In this missing addends worksheet, students fill in one missing addend in a problem to arrive at the sum of 20, 5 problems total. An answer key is included.
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How to Add Numbers
In this adding numbers together worksheet, 1st graders fill in the missing numbers/symbols to complete nine addition statements correctly.
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Addition Facts-1-9
In this addition instructional activity, students fill in missing numbers in problems that will arrive at given sums. Problems are also represented by pictures of blocks.
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Equations by 1 through 10
In this missing addend instructional activity, students fill in the missing addend to the addition and subtraction problems. Students fill in the missing addends for numbers 1 through 10 for 100 problems.
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Booster (pg.11)
In this addition and multiplication worksheet, students supply 4 missing numbers on a square card so each side of the square adds up to 110. Students put 2 missing numbers in circles so that all 4 of the numbers add up to 1200 and put...
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Addition / Subtraction Connection
In this addition and subtraction worksheet, students write addition and subtraction number sentences that relate to each other and solve word problems. Students complete 6 sets of problems.
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Booster
In this addition worksheet, students put a circle around 2 numbers out of 9 that add up to 99, put in the missing digit in 1 multiplication problem and supply 3 missing numbers in a triangle in order that each edge adds up to 125.
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Make 50
In this addition instructional activity, students figure out the missing numbers in 8 addition problems that equal the sum of 50. Students write down all the pairs of even numbers with a total of 50 and all the different pairs of even...
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Multi-Digit Counting
In this math worksheet, students get comfortable counting to 990 by filling in the blank spaces in number series. Students count the larger numbers in order, filling in missing spaces. The number series segments begin at 500 and do not...
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Adding Three Small Numbers
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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Missing Addend (2 through 5)
In this conceptual addition worksheet, students improve their adding skills. Students write a numerical addition problem based on the picture provided. There are sixteen in all.
Math Mammoth
Grade 1 Worktext
Use graphing, counting, and number lines to help first graders learn about addition and subtraction. An array of worksheets and activities are an excellent resource for your math lesson, whether you are focusing on counting skills...
Mathematics Vision Project
Module 6: Congruence, Construction, and Proof
Trace the links between a variety of math concepts in this far-reaching unit. Ideas that seem very different on the outset (like the distance formula and rigid transformations) come together in very natural and logical ways. This...