Khan Academy
Khan Academy: Add Using Groups of 10 and 100
Practice making groups of 10 and 100 while adding 3-digit numbers.
Khan Academy
Khan Academy: Add on a Number Line
Practice adding numbers like 554 and 237 using a number line. All numbers are less than 1000.
Khan Academy
Khan Academy: Add 2 and 3 Digit Numbers (No Regrouping)
Practice solving problems like 243 + 452.
Khan Academy
Khan Academy: Add 10s and 100s (No Regrouping)
Practice solving problems like 344+20 and 344+200.
Khan Academy
Khan Academy: Add 2 Digit Numbers by Making Tens 2
Practice adding two-digit numbers by making groups of ten.
Khan Academy
Khan Academy: Add 2 Digit Numbers by Making Tens
Practice adding 2-digit numbers like 43+27 that have sums that are multiples of 10.
Better Lesson
Better Lesson: Let It Roll! Reviewing Numbers 1 6
The students have been working with the numbers 1-6. Now it's time for them to show what they know with this interactive and fun review.
Better Lesson
Better Lesson: Oh Baloney! Incorporating Large Numbers Into Tall Tales
Fourth graders write and read aloud an exaggerated story using multi-digit numbers up to 1,000,000.
ABCya
Ab Cya: Monster Mansion Number Match
Monster Mansion Number Match is a fun matching game for kids to practice numbers and counting. Click on the windows of the Monster Mansion to reveal the friendly monsters inside and match the numbers and objects. Players can compare...
ABCya
Ab Cya: Adventure Man Dungeon Dash Numbers
Adventure Man is back once again, but this time with the help of fearless friend Danger Dame! Help them dash their way through the Numbers Dungeon while collecting gold, gems, and answering questions about odd, even, prime, and composite...
Shodor Education Foundation
Shodor Interactivate: Arithmetic Quiz
This activity gives the user randomized questions to answer on arithmetic with whole numbers and integers.
Better Lesson
Better Lesson: The Neighbors of Doubles
The big idea of this lesson is that students can solve for near doubles by thinking of the related doubles fact.
Math Open Reference
Math Open Reference: Prime Number
Learn about prime numbers with this handy reference guide. Provides a detailed definition and examples that enhance further explanation. Includes links to related topics.
Better Lesson
Better Lesson: Represent Me!
Fourth graders love to represent! In this instructional activity they will compare and explore multi-digit whole numbers to understand various ways of reading and writing numbers
Better Lesson
Better Lesson: Recording the Rekenreks
Students will have fun beating the clock to build a number on Rekenrek and will record their Rekenrek creations on sheets with numbers.
Cuemath
Cuemath: Natural Numbers
We see numbers everywhere around us - measuring the temperature, counting money, telling the time, etc. The numbers that are used for counting objects are called "natural numbers". This article explains the properties of natural numbers...
Quia
Ixl Learning: Reciprocals
Brush up on your math skills relating to reciprocals then try some practice problems to test your understanding.
Cool Math
Coolmath: Number Systems
This CoolMath resource will teach students about natural numbers, positive numbers, and whole numbers.
Homeschool Math
Homeschool Math: The Concept of Mixed Numbers
Lesson shows the concept of a mixed number with the help of visual models and number lines.
Other
Chili Math: How to Classify Real Numbers
Explains how to classify real numbers and provides numerous examples.
E-learning for Kids
E Learning for Kids: Math: Ice Cream Shop: Numbers to 999
On this interactive site students learn to read two and three digit numbers, use words to write numbers, put numbers in ascending and descending order and locate place value of digits.
E-learning for Kids
E Learning for Kids: Math: Sheep Farm: 3 Digit Numbers
Help Jack on his sheep farm and learn more about 3-digit numbers.