Worksheet
Curated OER

Adding Negative Numbers

For Students 7th - 8th
In this middle school activity, students add signed numbers. The two page activity contains thirty questions. Answers are not provided. 
Interactive
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Correct number sentence

For Students 2nd - 3rd
In this addition instructional activity, students find the correct number sentence for an addition word problem containing one digit numbers. Students have 3 number sentences to choose from for 1 problem.
Worksheet
Curated OER

Math Word Problems-Simple Addition

For Students 1st - 2nd
In this math word problem worksheet, students use space provided to show their work and complete a set of 3 simple addition problems.
Lesson Plan
Curated OER

Radicals: Addition & Subtraction of Complex Numbers

For Teachers 10th - 12th Standards
In this radical worksheet, students simplify complex numbers.  They find the sum and difference of complex numbers.  This two-page worksheet contains 11 multiple-choice problems.  Answers are given on the last page.
Worksheet
Curated OER

Ways to Add

For Students 4th - 5th
In this addition worksheet, learners learn several different options to add the numerals twenty-four and thirty. The options are models, mental math, a hundreds chart, or pencil and paper.
Worksheet
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Add Integers on a Number Line

For Students 4th - 6th
In this adding integers on a number line practice activity, students sharpen their problem solving skills as they solve 6 story problems.
Worksheet
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Mental Arithmetic--Adding to Thousands

For Students 3rd - 4th
In this adding to thousands worksheet, students mentally add 12 problems as fast as they can without using paper and only writing down their answers. Students solve 3 additional addition problems and then explain what method they used to...
Interactive
Curated OER

Find the right number sentence

For Students 2nd - 3rd
In this addition instructional activity, students find the correct number sentence to go with the word problem. Students have 3 number sentences with 1 digit numbers to choose from.
Lesson Plan
Illustrative Mathematics

Kendall's Vase - Tax

For Teachers 6th - 7th Standards
Practice sales tax when using the activity with three solution choices. Learners can use a percent table, benchmark percent, or solve by calculating. Solutions don't show how to multiply by the decimal, but method can be added in....
Worksheet
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The Ocean Floor

For Students 7th - 8th
Practice reading comprehension by approaching oceanography through 2 pages of informational text. The text compares the ocean floor to the Grand Canyon to gives learners perspective, and gives a brief coverage of the earth's crust and...
Worksheet
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Horizontal Four Digit Place Value Addition

For Students 2nd - 3rd
In this horizontal addition worksheet, students add the 4 numbers to equal a four digit number. Students add to solve 16 problems.
Organizer
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Santa's List Sums

For Students 3rd
In this two-digit addition worksheet, 3rd graders add 17 sets of two-digit numbers and write each sum. A 3-part bonus question requires students to add all 17 numbers together.
Worksheet
Curated OER

Follow the Decade Rules

For Students 5th - 6th
In this number sense worksheet, students find the missing numbers. Students are to find the missing number or numbers using the rule supplied, or find the rule for the numbers supplied to complete each of the eight charts.
Worksheet
Curated OER

Vectors

For Students 11th
For this Algebra II worksheet, 11th graders find the sum of a pair of vectors.  The two page worksheet contains a combination of nine multiple choice and free response questions.  Answers are included. 
Organizer
Curated OER

More Santa's List Sums

For Students 3rd
In this two-digit addition worksheet, 3rd graders add 17 sets of two-digit numbers and write each sum. A 3-part bonus question requires the students to add up all 17 two-digit numbers.
Worksheet
Curated OER

Adding or Subtraction Algebraic Fractions

For Students 9th - 11th
In this Algebra I/Algebra II activity, students add and subtract algebraic fractions and reduce the answer to lowest terms.  The two page activity contains a combination of eleven multiple choice and free response questions. ...
Worksheet
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6: Adding with Negative Numbers

For Students 6th - 8th
In this adding negative numbers worksheet, students solve three multi-part short answer problems. Students add negative integers. Students evaluate addition and subtraction expressions for given values.
Worksheet
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Four + One = Five

For Students 9th - 10th
For this algebra worksheet, students decipher a cryptarithm to make an addition problem. They have to figure out what digit each letter represent to be able to solve this problem. There is an answer key with this problem.
Worksheet
Curated OER

Naming Numbers

For Students 1st
In this addition and subtraction fact families learning exercise, 1st graders write five fact family answers for each of six numbers. In a sample problem, students are instructed to find names for 8. The sample answers are 4+4 and 11-3.
Worksheet
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Fact Finding

For Students 3rd
In this number search puzzle activity, 3rd graders locate and circle 20 addition, subtraction, multiplication and division facts hidden in the puzzle involving the number 6.
Worksheet
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Bases

For Students 4th - 6th
In this problem solving activity, students calculate the base to 8 specific numbers. Students solve 3 base addition problems and draw a picture to illustrate each one.
Worksheet
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Ratios, Rates and Percentages

For Students 6th
In this ratios, rates and percentages worksheet, 6th graders solve 16 different types of problems that include writing each ratio as a decimal and a fraction in lowest terms as a percent. They also arrange numbers in ascending order and...
Worksheet
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Addition Word Problems

For Students 1st - 2nd
In this addition word problem worksheet, students add one-digit plus one-digit numbers to find the sum. Students solve 9 problems.
Worksheet
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What's a Thousand?

For Students 1st - 2nd
Three tables are given for students to fill in with given information. After completing each table, students answer 2 questions about each table. These questions challenge students' number sense of 1000. Try instructing your students to...