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ABCya
Ab Cya: Molly Adds & Subtracts From 20
This educational activity provides word problems with manipulatives for kids to practice adding and subtracting within 20. The word problems are read aloud and have objects that can be used for counting. Children may need assistance from...
Math Slice
Math Slice: Number Sense Math Drills
A group of topics that include counting with pictures to 20, sums to 100, finding the missing number in a sequence, multiplication, expanded and standard form, and basic computation practice with addition, subtraction, multiplication, or...
Expansion Learning
Expansion Learning: Math Activity: Add and Subtract
Activity provides students the practice they need to master the skill of adding then subtracting. Immediate feedback is given.
Shmoop University
Shmoop: Fractions & Decimals: Adding & Subtracting Decimals
The mathematics notes investigate how to add and subtract decimals. Examples and practice problems with solutions are included.
Khan Academy
Khan Academy: Graphically Add & Subtract Vectors
Analyze graphs that represent vector addition & subtraction. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Mangahigh
Mangahigh: Ice, Ice, Maybe: Fast Estimation With Basic Number Calculations
Practice your arithmetic skills as you estimate the answer to questions involving addition, subtraction, multiplication, and division. Includes whole numbers, fractions, and percents. As you answer questions, you guide penguins across an...
Khan Academy
Khan Academy: 2 Step Word Problems
Solve two-step word problems with addition, subtraction, multiplication, and division. Some questions include estimation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...
Khan Academy
Khan Academy: Represent Multi Step Word Problems Using Equations
Represent multi-step word problems using equations with a letter standing for the unknown quantity. Equations include addition, subtraction, multiplication, and division. Students receive immediate feedback and have the opportunity to...
Khan Academy
Khan Academy: Multi Step Estimation Word Problems
Use estimation to solve multi-step word problems involving addition, subtraction, multiplication, and division. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Study Pad
Splash Learn: Decimal Arithmetic
[Free Registration/Login Required] This game provides practice in decimal arithmetic including addition, subtraction, multiplication, and division of decimals.
Khan Academy
Khan Academy: Add Fractions With Unlike Denominators
Practice adding fractions that have different denominators. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Varsity Tutors
Varsity Tutors: Aplusmath: Algebra Flashcards
With this interactive, students use algebra equations flashcards to practice solving equations using addition, subtraction, and multiplication.
Khan Academy
Khan Academy: Take Apart
In this exercise, students practice subtraction by using visuals to take numbers apart. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Put Together
In this exercise, students practice adding within 10. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Adding Two Digit Numbers by Making Tens
In this exercise, students practice adding two-digit numbers by making tens. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Adding Two Digit Numbers by Making Tens 2
In this exercise, students practice adding two-digit numbers by making tens. Students receive immediate feedback and have the opportunity to watch tutorial videos, get hints, and try questions repeatedly.
Illustrative Mathematics
Illustrative Mathematics: 4.oa Comparing Growth, Variation 1
The purpose of this task is to foster a classroom discussion that will highlight the difference between multiplicative and additive reasoning. Aligns with CCSS.Math.Content.4.OA.A.1 Interpret a multiplication equation as a comparison
Annenberg Foundation
Annenberg Learner: Patterns in Mathematics: Mystery Operations
This interactive activity allows you to change an equation's numbers in an attempt to figure out what operations are being used to control the answers.
Larson Texts
Larson Precalculus: Operations of Complex Numbers in the Complex Plane [Pdf]
A 3-page handout with examples and exercises in adding, subtracting, and multiplying complex numbers in the complex plane, as well as finding complex conjugates.
Khan Academy
Khan Academy: Round Whole Numbers
Practice rounding whole numbers to the nearest hundred or thousand. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Interpreting Negative Number Statements
Practice problems interpreting negative number statements.
Project Britain
Primany Homework Help: Year 4 Iq Problems A
The assessment reviews addition, subtraction, multiplication, and division. Students answer 10 review problems and then check their answers by clicking a button.
Project Britain
Primary Homework Help: Iq Problems 4
The assessment reviews addition, subtraction, and multiplication.. Students answer 10 review problems and then check their answers by clicking a button.
Project Britain
Primany Homework Help: Year 5 Iq Problems
The assessment reviews addition, subtraction, multiplication, and division. Students answer 10 review problems and then check their answers by clicking a button.