Purple Math
Purplemath: Number Bases: Introduction & Binary Numbers
The process of converting between different number bases is actually fairly simple, but the thinking behind it can seem a bit confusing at first. And while the topic of different bases may seem somewhat pointless to you, the rise of...
Khan Academy
Khan Academy: Compare 3 Digit Numbers
Practice more challenging problems comparing numbers within 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.
Cool Math
Coolmath: Coolmath4kids: Adding Numbers Within 100
A step-by-step tutorial showing how to add 2-digit numbers in place value columns without regrouping. Includes exercises to try. CCSS.Math.Content.3.NBT.A.2 Fluently add and subtract within 1000
Alabama Learning Exchange
Alex: Multiplication My Way
In this lesson, students will explore the US Algorithm Method of multiplication using a unique way of describing it known as the Turtlehead Method. Students will collaboratively work together to complete story problems using the US...
Khan Academy
Khan Academy: Multiply 2 Digits Numbers With Area Models
Use an area model to decompose factors and multiply. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Elem Math: Representing Numbers in Expanded Form Ii
[Free Registration/Login may be required to access all resource tools.] The video shows up to the thousands place and describes how to recognize the place value of a digit in a number. The video is followed by a series of practice...
CK-12 Foundation
Ck 12: Elem Math: Creating Largest and Smallest Numbers Given Variables, Digits
[Free Registration/Login may be required to access all resource tools.] Practice forming the largest and smallest numbers given a set of 3 digits, two of which are unknown variables, in this learning module. Includes video demonstration...
CK-12 Foundation
Ck 12: Elem Math: Comparing Digit Values in Numbers Numbers to 10000
[Free Registration/Login may be required to access all resource tools.] The video describes how to determine which number has a 5 in the tens place. The video is followed by practice problems to assess student understanding of the concept.
Math Cats
Math Cats: Can You Say Really Big Numbers?
Practice reading and writing out the number words for large numbers.
![K 5 Math Teaching Resources: Base Ten Concentration [Pdf] Interactive](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "K 5 Math Teaching Resources: Base Ten Concentration [Pdf] Interactive")
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Base Ten Concentration [Pdf]
Students determine if the base ten picture is the same as the two-digit number in this game of memory.
Cool Math
Coolmath: Coolmath4kids: Adding Numbers Within 1000
Step-by-step tutorial showing how to add 3-digit numbers in place value columns with and without regrouping. CCSS.Math.Content.3.NBT.A.2 Fluently add and subtract within 1000
CK-12 Foundation
Ck 12: Elem Math: One Step Conversions Between Multiples of 10
[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to give the equivalent value of a digit in two different place value positions for numbers up to 10 million. Includes...
Khan Academy
Khan Academy: Add Within 100
Practice adding two-digit numbers. All numbers in these problems are 100 or less.
Illustrative Mathematics
Illustrative Mathematics: 4.nbt What's My Number?
The purpose of this task is for students to reason about base-ten numbers on the number line in a way that will require them to use what they know about place value. Students first represent addition and subtraction on the number line in...
Illustrative Mathematics
Illustrative Mathematics: Multiplying Decimals by 10
The purpose of this task is to help learners understand and explain why multiplying a decimal number by 10 shifts all the digits one place to the left. This understanding builds on work around place-value that students have done with...
CK-12 Foundation
Ck 12: Elem Math: Identifying Digit Values in Numbers Numbers to 10000
[Free Registration/Login may be required to access all resource tools.] The video describes the value of a digit in the thousands place. The video is followed by a series of practice questions to assess student comprehension of the concept.
Khan Academy
Khan Academy: Comparing Three Digit Numbers
In this exercise, students practice comparing three-digit numbers. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Multiplying 4 Digits by 1 Digit With Visual Models
In this exercise, students practice multiplying 4 digits by 1 digit with visual models. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Illustrative Mathematics
Illustrative Mathematics: Toll Bridge Puzzle
You are on a trip and need to cross a bridge, but you have to pay tolls in coins. Solve this puzzle by making your way to the island only using 100 coins.
E-learning for Kids
E Learning for Kids: Math: Movie Theater: Number Patterns
Caleb works in a movie theater. Can you help him serve foods and beverages to the customers?
Khan Academy
Khan Academy: Add 1s or 10s (No Regrouping)
Practice solving problems like 34+5 and 34+50.
Math Is Fun
Math Is Fun: Compare Decimal Numbers 0 to 1
Score points as you compare the value of two given decimals by choosing the correct symbol: less than, greater than, or equal.
ClassFlow
Class Flow: Rounding to the Nearest 10
[Free Registration/Login Required] This flipchart is an introduction/review for rounding to the nearest 10 in 2 and 3 digit numbers.