University of Cambridge
University of Cambridge: Nrich: Routes 1 and 5
Sharpen your logic and basic arithmetic skills while working on this challenge. Solution.
University of Cambridge
University of Cambridge: Nrich: Penta Primes
Using only the single digits listed make as many prime numbers as you can for this challenge. After you have your list you can check this one page website and it will show you the solution.
University of Cambridge
University of Cambridge: Nrich: Constant Counting
You can use your calculator to count by all kinds of numbers: 2s, 3s, etc. This one page website shows you how to do that and gives you a challenge besides. The solution for the challenge is waiting for you right at the website once you...
University of Cambridge
University of Cambridge: Nrich: Reverse Trick
Get your calculator and your problem solving skills out to solve this challenge. You can find the solution right at this one page website.
University of Cambridge
University of Cambridge: Nrich: Magic Squares 3x3
Use your problem solving skills to make these magic squares work correctly. The solutions are at this one page website.
University of Cambridge
University of Cambridge: Nrich: Egyptian Rope
See how many different regular polygons you can make using the 12 knot Egyptian rope at this one page website. Check your solution right at the website.
Teaching Treasures Publications
Teaching Treasures: Year Eight Timed Mental Math
This resource provides an interactive worksheet with just ten problems as an independent practice or a quick assessment.
Teaching Treasures Publications
Teaching Treasures: Year Eight Timed Mental Math
Improve your computation skills using this timed interactive worksheet.
Shmoop University
Shmoop: Converting Decimals
This animation features the mathematical concept of converting decimals how to perform the calculation. 2:17sec.
Shmoop University
Shmoop: Basic Operations: Integers
The class notes explore the mathematics topic of integers.
Shmoop University
Shmoop: Basic Operations: Multiplying and Dividing Integers
The mathematics resource explores integer multiplication and division. Students examine the topics through class notes and examples. Practice problems with solutions are available to check for comprehension of the concepts.
Shmoop University
Shmoop: Fractions & Decimals: Adding & Subtracting Decimals
The mathematics notes investigate how to add and subtract decimals. Examples and practice problems with solutions are included.
That Quiz
That Quiz: Aritmetica
Interactive practice tests to drill addition, subtraction, multiplication and division. Tests are timed and keep track of right and wrong answers.
NumberNut
Number Nut: Ordering Operations With Parentheses
A thorough lesson on order of operations that includes detailed examples and related vocabulary.
Maths Challenge
Maths challenge.net: Counting Triangles Again
A "one star" geometry problem that requires finding the visual pattern and applying logic with basic math skills to find triangles in a pattern.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Pythagorean Triples
Find a quick, concise explanation of Pythagorean triples. Examples are given and clearly explained.
Math Is Fun
Math Is Fun: Pythagorean Triples
Students investigate the sets of whole numbers that are Pythagorean triples. A definition and examples are included.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Types of Triangles
Find a quick, concise explanation of the different types of triangles. Examples are given and clearly explained.
National Council of Teachers of Mathematics
Nctm: Figure This: Nctm Math Challenge Three Squares (Pdf)
If you think you can handle the Pythagorean Theorem, then this is a math challenge you should try. Explore geometric relationships and measurement in this one page activity from the NCTM Math Challenges for Families series.
National Council of Teachers of Mathematics
Nctm: Figure This: Monday's Child
Do you know what day of the week were you born? You can find the exact day when you try this math challenge that explores problem solving with algorithms. Find out how scientist and statisticians use algorithms in their jobs. A one page...
Doina Popovici
Math Play: Types of Polygons
Identify the polygon based on clues in this online game.
Ducksters
Ducksters: Practice Math Answers: Triple Digit Multiplication
Find the answers to the triple-digit multiplication practice problems on this site.
Ducksters
Ducksters: Practice Math Questions: Triple Digit Subtraction
Find practice questions for triple-digit subtraction on this site.
Ducksters
Ducksters: Practice Math Questions: Triple Digit Multiplication
Practice your triple-digit multiplication skills with these practice problems.