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358 reviewed resources for missing operator

Lesson Planet

Study Jams! Determine the Missing Operation in an Equation

For Teachers 4th - 6th
Deepen the number sense of your math class with a short presentation on writing equations. Using the relationship between numbers, young mathematicians learn how to determine the missing operator in an equation. A number of opportunities...
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Choose the Operation: Plus or minus (up to 100)

For Students 2nd - 4th Standards
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...
1 In 1 Collection
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Miss Integer Finds Her Properties in Order

For Teachers 4th - 6th Standards
Access prior knowledge to practice concepts like order of operations and exponents. Your class can play this game as a daily review or as a warm-up activity when needed. They work in groups of four to complete and correct review problems.
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Order of Operations with Rational Numbers - Problem Solving 22.4

For Students 5th - 7th
Middle schoolers examine three equations with missing numbers or symbols then solve five word problems where they must use rational numbers and the correct order of operations.
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Choosing the Operation, part 2

For Students 3rd - 4th Standards
Choose the symbol; mathematicians can get confused between division and multiplication, so drill these skills with them. They examine 54 number sentences without a symbol, writing either the multiplication or division operation into the...
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Number Bonds to 10: Determine the missing addend

For Teachers K - 1st
Each slide contains a group of animals and an equation that adds up to 10. However each equation is missing a number, learners attempt to determine the missing addend to revile the number of animals hiding under the cloud. A fun,...
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Missing Addends - Inverse Operations

For Students 2nd - 3rd
In this math learning exercise, student find the missing addend in 28 single and double digit addition problems and write the corresponding subtraction problem.
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Insert the missing operation

For Students 7th - 9th
In this missing operation instructional activity, learners insert the missing operation to create fifteen correct mathematical equations.  The mathematical operation the students may choose from are: addition, subtraction,...
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Order Of Operation

For Teachers 8th - 10th
In this algebra worksheet, students identify the order of operation and the distributive property. They add, subtract, multiply and divide expressions and equations. There are 10 questions with an answer key.
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Missing Digit Operations (B)

For Students 4th - 6th
In this multiple operations math learning exercise, students use their math skills to solve 30 problems by filling in missing digits. Students should pay close attention to operation signs as there are addition, subtraction,...
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Order of Operations

For Students 9th
For this Algebra I worksheet, 9th graders use the order of operations to evaluate numerical expressions containing parenthesis and brackets.  The one page interactive worksheet contains instruction, worked examples and ten practice...
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Iced Tea, Please: Order of Operations

For Students 7th - 9th
For this order of operations worksheet, students use order of operations to complete an equation. They determine the value of a missing number within an equation. This one-page worksheet contains 12 self-checking problems. Upon correct...
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Finding the Missing Addend

For Teachers 3rd - 5th
Students find the missing addend in problems using 3 digit numbers. In this missing addend lesson plan, students write subtraction sentences that correspond to addition sentences.
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Halloween Missing Digits (A)

For Students 2nd - 3rd
In this mathematics learning exercise, students complete each with the correct missing number digits. Then they try to find the digits that the zombie lost while creating the sheet.
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Whole Number Order of Operations Practice

For Students 6th - 8th
In this middle school mathematics worksheet, students use the order of operations to simplify numeric expressions that are composed of whole numbers.  The one page worksheet contains seven problems.  Answers are provided. 
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Domain: Operations and Algebraic Thinking

For Teachers K - 2nd
Practice basic operations for young mathematicians in fun ways! Using two decks of cards (Ace through 10 plus the joker), learners play "memory" by matching numbers that can be added to make 10 and writing number sentences. In another...
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St. Patrick's Day Missing Digits (H)

For Students 4th - 6th
In this St. Patrick's Day missing digits activity, students solve for the missing digits in twenty-two addition, subtraction and multiplication equations.
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St. Patrick's Day Missing Digits (J)

For Students 3rd - 5th
In this St. Patrick's Day missing digits worksheet, pupils figure out the missing numbers in twenty-two addition, subtraction and multiplication equations.
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Inverse

For Teachers 2nd - 4th
Your class can learn all about inverse operations. They will review what inverse operations are, see examples, learn how to use inverse operation to check an answer, write addition and subtraction equations in the inverse, and use the...
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Adding Bigger Numbers: 2 and 3 Digit Numbers

For Students 3rd - 5th Standards
Challenge your young learners with an addition worksheet, which provides different opportunities to practice adding two and three-digit numbers. The first two sections provide twelve problems for pupils to solve, while the last two...
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Multiplying and Dividing by 10

For Students 2nd - 4th
Once young mathematicians understand how easy it is to multiply and divide by 10, they'll be hooked! They complete four sections of 12 problems each, all involving this skill. First, scholars find the product of various whole numbers...
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Arithmetic Identity Property of Addition 3

For Students 1st - 3rd
In this identity property worksheet, students identify the one digit number missing in the identity property in each problem. Students complete 16 problems.
1 In 1 Collection
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Grade 2 Supplement Set A2 – Number and Operations: Solving Equations

For Teachers 2nd
Second graders play two different games to build foundational algebraic reasoning skills. They generate addition and subtraction strategies to determine missing addends and subtrahends through 20. This resource includes everything needed...
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Finding Missing Numbers

For Students 3rd - 4th
In this division facts activity, students solve 11 problems in which missing numbers are inserted into blanks to make complete division facts. Students use related multiplication to figure these out.

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