Cut the Knot
Cut the Knot: Lattice Multiplication
Have you heard of the 13th century mathematician, Leondardo Fibonacci? See examples of his concept of a lattice multiplication algorithm. Several example problems, including an interactive one where students can change the factors, are...
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Multiplication Strategy: Partial Products 1 [Pdf]
Break a multiplication down into simpler parts to complete a multiplication problem with multi-digits.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Multiplication Strategy: Partial Products 2 [Pdf]
Break down numbers as a strategy to multiply one-digit by three-digit numbers and two-digit by two-digit numbers.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Make the Smallest Product [Pdf]
Play a card game with a partner to create two-digit by two-digit multiplication problems with the smallest product.
Math Planet
Math Planet: Pre Algebra: Absolute Value
Gain an understanding of absolute value by viewing examples and a video lesson. [0:58]
McGraw Hill
Glencoe Mathematics: Online Study Tools: Self Check Quiz on Right Triangles
The online assessment demonstrates knowledge of concepts utilized in Geometry. The multiple choice questions test students on right triangles and trigonometry.
Quia
Ixl Learning: Multiply Three or More Numbers Up to Three Digits
Multiplication word problems where three numbers are multiplied together to solve the problems.
Quia
Ixl Learning: Divide by 1 Digit Numbers: Interpret Remainders
Practice dividing 1-digit numbers with remainders in word problems.
Illustrative Mathematics
Illustrative Mathematics: Using Operations and Parentheses
The purpose of this task is to give students a chance to work creatively with three of the four fundamental arithmetic operations (addition, subtraction, and multiplication). It is well suited for helping students develop fluency with...
Illustrative Mathematics
Illustrative Mathematics: 6.g Base and Height
The purpose of this task is to help students understand what is meant by a base and its corresponding height in a triangle and to be able to correctly identify all three base-height pairs. Aligns with 6.G.A.1.
Illustrative Mathematics
Illustrative Mathematics: 6.g Polygons in the Coordinate Plane
The purpose of this task is for students to practice plotting points in the coordinate plane and finding the areas of polygons. This task assumes that students already understand how to find areas of polygons by decomposing them into...
National Council of Teachers of Mathematics
Nctm: Figure This: Beating Heart
Do you know how long it takes your heart to beat 100 times? Test your estimation and number sense skills with this problem-solving challenge. A one-page activity taken from the NCTM Math Challenges for Families Collection. Hints and...
Mangahigh
Mangahigh: Number: Order of Operations
Students learn about the concept of order of operations by exploring a tutorial. They can then test their knowledge by taking a ten question assessment that increases in difficulty as they correctly answer questions.
Mangahigh
Mangahigh: Number: Add and Subtract Decimals
This site provides students practice with the concept of adding and subtracting decimals. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.
Mangahigh
Mangahigh: Number: Multiply by a Decimal
This site provides students practice with the concept of decimal multiplication. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.
Mangahigh
Mangahigh: Number: Multiply Decimals
This site provides students practice with the concept of decimal multiplication. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.
Mangahigh
Mangahigh: Number: Use a Decimal Calculation
Choose and operation to solve calculations involving decimals.
Mangahigh
Mangahigh: Number: Quick Methods for Multiplication
Multiply whole numbers quickly using different strategies.
Mangahigh
Mangahigh: Number: Quick Methods for Division
Explore quick methods for division though halving and doubling numbers.
Mangahigh
Mangahigh: Number: Check Answers Using Approximations
Test your skills of division and estimating answers.
Mangahigh
Mangahigh: Number: Use Parentheses
Solve problems using parentheses to follow the order of operations.
Mangahigh
Mangahigh: Number: Addition and Subtraction Column Method
Test your knowledge of addition and subtraction using the column method.