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Curated OER
Adding and Subtracting Integers
In this algebra worksheet, students solve problems containing integers using addition and subtraction. They add positive and negative numbers correctly. There are 30 problems with an answer key.
Curated OER
Do I Add? or Subtract?
Fourth graders read a book. In this word problems lesson, 4th graders review the operations addition and subtraction, read the book Sea Sums, learn strategies for determining if they should add or subtract, and solve story problems,
Curated OER
Addition and Subtraction Up to Two-Digits
In this finding the sums and differences learning exercise, students write the equations in the ones and tens columns and solve and also solve vertical problems with and without regrouping. Students solve 18 problems.
Curated OER
Multiplying Decimals and Mixed Numbers
Students practice multiplying decimals and/or mixed numbers, explore the effects of multiplying decimals and mixed numbers, and practice predicting the effects of multiplying a number by a decimal or mixed number.
Curated OER
Math B Regents Questions by Performance Indicator: Rational Numbers
In this rational number instructional activity, learners add and subtract quantities containing radical expressions. They identify equivalent expressions. This three-page instructional activity contains 15 multiple-choice...
Curated OER
Two-Digit Addition and Subtraction No Regrouping (A)
In this addition and subtraction worksheet, students find the sums and differences by adding and subtracting two-digit numbers with no regrouping. Students solve 36 problems.
Curated OER
Two-Digit Addition and Subtraction (A)
In this two-digit addition and subtraction worksheet, students solve with mixed regrouping and no regrouping. Students solve 49 problems.
Curated OER
Two-Digit Addition and Subtraction No Regrouping (B)
In this adding and subtracting two-digit numbers worksheet, students find the sums and differences with no regrouping. Students solve 36 problems.
Curated OER
One-Digit Addition and Subtraction No Regrouping (B)
For this addition and subtraction worksheet, students find the sums and differences of one-digit numbers with no regrouping. Students solve 47 problems.
Curated OER
Two-Digit Addition and Subtraction (B)
In this adding and subtracting two-digit numbers worksheet, students find the sums using mixed regrouping and no regrouping. Students solve 49 problems.
Curated OER
One-Digit Addition and Subtraction (B)
In this addition and subtraction worksheet, students find the sums and differences of one-digit numbers. Students solve 49 problems.
Curated OER
Three-Digit Addition and Subtraction (H)
In this mixed addition and subtraction worksheet, students find the sums and differences for three-digit numbers. Students solve 49 problems.
Curated OER
Adding and Subtracting Fractions
In this fractions worksheet, students complete a total of 10 problems, adding and subtracting mixed numbers and fractions. A reference web site is given for additional activities.
Alabama Learning Exchange
As If Numbers Weren't Complex Enough Already!
The class explores the concept of complex numbers on a website to generate their own Mandelbrot sets. They will practice performing operations with complex numbers and then to get a visual understanding, graph the absolute value of a...
Curated OER
What's That Number? 1-Digit Addition and Subtraction
In this subtraction and addition worksheet, students fill in missing numbers in problems necessary to arrive at given answers. All problems use 1-digit numbers only.
Curated OER
Number: Negative Numbers
Pupils solve numerical equations with negative numbers. They use the number line to compare the relationship of numbers greater than zero to those less than zero. They practice starting at various points on the number line and then...
Del Mar College
Exponential and Radical Rules
So many rules and so little time. Make it easy and provide all the exponent and radical rules in one place as an easy reference guide. All of the properties come with several examples to show how the rules apply to different problems.
Curated OER
Adding and Subtraction of Integers (more than 2)
In this addition and subtraction activity, students add and subtract numbers in each problem where there are more than 2 numbers. Students complete 90 problems total.
Curated OER
Addition and Subtraction Practice
In this addition and subtraction learning exercise, students add and subtract numbers 0 through 19. Students complete 22 problems on each of the 11 pages.
Maths Blog
Adding/Subtracting Whole Numbers in Your Head
Exercise those mental math muscles! This activity contains 10 addition and 10 subtraction problems which require learners to compute sums or differences in their heads. A quick review at the top of the page provides a strategy based on...
California Education Partners
Least and Greatest
Squares can be magic. Pupils use their knowledge of addition of positive and negative rational numbers to create a 3 X 3 magic square where the sums are 1. Scholars create addition and multiplication expressions with a set of rational...
EngageNY
Networks and Matrix Arithmetic
Doubling a network or combining two networks is quick and easy when utilizing matrices. Learners continue the network example in the second lesson of this series. They practice adding, subtracting, and multiplying matrices by a scalar...
Curated OER
Primary Understanding and Use of Place Value
Explore place value and regrouping with your class. They develop awareness of several ancient number systems and how they differ from the base ten system commonly used today. They play "Chip Trading" with partners to practice addition...
Illustrative Mathematics
It's Warmer in Miami
Brrrr it's cold in Alaska! When given the temperatures of Anchorage and Miami in the winter, your mathematicians will calculate how much warmer it is in Miami. Answer key provides two different solution choices. Great as a warm-up for...