Purple Math
Purplemath: Sequences and Series: Terminology and Notation
Explains the basic terminology and notation of sequences and series, including summation symbols, subscripts, and indices.
AAA Math
Aaa Math: Adding Nickels and Pennies
This site offers practice in adding nickels and pennies. Three timed games are provided to test students' understanding of the skill.
AAA Math
Aaa Math: Adding Dimes, Nickels, and Pennies
Students can practice adding coins using the interactive games and practice exercises provided on this site.
AAA Math
Aaa Math: Estimating a Sum
Students can practice estimating sums to the nearest thousand in a series of self-check exercises and timed learning games.
AAA Math
Aaa Math: Front End Estimation of Sums
Students can practice estimating sums using front-end estimation in a series of self-check exercises and timed learning games.
AAA Math
Aaa Math: Addition Using Estimation
This site explains how to estimate sums by rounding whole numbers. Games and exercises are provided to practice the skill.
AAA Math
Aaa Math: Front End Estimation of Sums
Students use front-end estimation to solve addition problems. Learning exercises and games are provided to practice the skill.
AAA Math
Aaa Math: Inverse Relationship of Subtraction and Addition
Students explore the inverse relationship of addition and subtraction. The resource provides self-check exercises and timed learning games to practice the concept.
AAA Math
Aaa Math: Addition of Decimal Tenths
Students can practice adding decimal numbers in the tenths place through a series of self-check exercises and timed learning games.
Wolfram Research
Wolfram Mathworld: Riemann Integral
This site explains the Riemann Integral and its relation to the Riemann Sum. This site addresses double and triple Riemann Integral scenarios. Includes formulas, definitions, and links to related sites.
Beacon Learning Center
Beacon Learning Center: Sum Fun
An interactive learning tutorial helps students practice addition facts up to 18.
Mr. Martini's Classroom
Mr. Martini's Classroom: Math Addition With Carrying 2, 3, and 4 Digits
Students solve two, three, and four-digit addition problems with carrying. The sum turns blue if correct.
CK-12 Foundation
Ck 12: Elem Math: Addition Select the Incorrect Sentence
[Free Registration/Login may be required to access all resource tools.] Students practice finding the addition sentence that is not equal to the desired sum.
Quia
Quia: Addition Level 1
Students can practice addition facts using the interactive matching games on this site.
![K 5 Math Teaching Resources: Difference Add [Pdf] Activity](https://static.lp.lexp.cloud/images/attachment_defaults/resource/large/FPO-knovation.png "K 5 Math Teaching Resources: Difference Add [Pdf] Activity")
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Difference Add [Pdf]
Students will use playing cards to determine the difference between numbers drawn.
CK-12 Foundation
Ck 12: Algebra: Guess and Check, Work Backward
[Free Registration/Login may be required to access all resource tools.] Solve word problems using the guess, check, and revise strategy.
CK-12 Foundation
Ck 12: Addition and Subtraction Phrases as Equations
[Free Registration/Login may be required to access all resource tools.] Write addition and subtraction verbal phrases as single variable equations.
CK-12 Foundation
Ck 12: Algebra: Distributive Property to Evaluate Formulas With Decimals
[Free Registration/Login may be required to access all resource tools.] Evaluate formulas with decimal quantities using the distributive property.
CK-12 Foundation
Ck 12: Algebra: Problem Solving Models
[Free Registration/Login may be required to access all resource tools.] Solve real- world problems involving a problem solving plan
CK-12 Foundation
Ck 12: Algebra: Simplify Sums or Differences
[Free Registration/Login may be required to access all resource tools.] Simplify sums or differences of single variable expressions by combining like terms.
CK-12 Foundation
Ck 12: Arithmetic: Estimation of Sums of Mixed Numbers and Fractions
[Free Registration/Login may be required to access all resource tools.] Estimate sums and differences of fractions and mixed numbers
CK-12 Foundation
Ck 12: Arithmetic: Mental Math to Add and Subtract Decimals
[Free Registration/Login may be required to access all resource tools.] Find sums and differences of decimals using mental math.
CK-12 Foundation
Ck 12: Elem Math: Sums of Whole Numbers to 1000 (Grade 3)
[Free Registration/Login may be required to access all resource tools.] This site offers the video "Addition: 3 Digits." and a practice quiz in which students solve problems using addition to find the sum or summand of numbers up to 1000.
Soft Schools
Soft Schools: Integers and Real Numbers Quiz
Students are expected to evaluate the sum, difference, product, quotient, and the absolute value of real numbers and integers. Also, they must know the concepts of positive and negative numbers.