Curated OER
Secret Code Riddles: Addition & Subtraction
In this riddle worksheet, students use mathematics to break a secret code. They solve addition and subtraction problems to discover the answer to given riddles. There are 9 riddles, with an average of seven to nine problems to solve...
Curated OER
Negative Numbers Practice Sheet
Fourth and Fifth graders should benefit from this negative and positive number addition worksheet. There are 90 problems to solve; each has a negative number plus a positive number. There are also a few subtraction problems sprinkled in...
Curated OER
Introduction to Vector Spaces
In this vector spaces worksheet, students identify the vector in a given set. They explore addition and scalar multiplication in their vectors. This two-page worksheet contains 13 problems.
Curated OER
Money Riddle
In this addition worksheet, students solve 11 problems in which a mystery number is added to another two digit number with the sum always being 100. After completing the problems a mystery message will be revealed.
Curated OER
Linear Systems: Graphical Interpretation of Vectors and Linear Systems
In this interpretation of vectors and linear systems worksheet, students describe the geometric appearance of two vectors. They add the two vectors and sketch the sum as well as the vectors to determine the commutativity of vector...
Illustrative Mathematics
Rectangle Perimeter 3
This activity looks at writing expressions to represent perimeter of a rectangle and then considers the concept of equivalent expressions and the distributive property in more detail.
Curated OER
You Know the Answer: Math Riddle
Although the riddle is an outdated political reference, this math challenge is a good practice in operations and domain-specific vocabulary. Learners complete 18 problems, using multiplication, division, subtraction, and addition. Some...
Curated OER
Variables and Expressions
In this variables and expressions activity, 9th graders solve and complete 19 different problems that include translating various expressions. First, they write a verbal expression for each algebraic expression. Then, students write an...
Curated OER
Decimals Vocabulary Matching
In this decimal vocabulary worksheet, students match a set of 27 words to their correct definitions. Answers are included on page 2; a reference web site is given for additional activities.