Curated Video
Assessing the Reasonableness of Subtraction with Rounding
In this lesson, students will learn how to assess the reasonableness of subtraction problems by using rounding. By rounding the numbers to the leftmost digit and subtracting, students can determine if the given answer is reasonable or not.
Brian McLogan
Learn how to subtract a three digit whole number from another three digit whole number
👉 You will learn how to add and subtract integers. We will work through adding and subtracting two integers up to multiple integers. We can look at adding and subtracting integers by looking at there values on a number line where there...
Curated Video
Assessing the Reasonableness of Subtraction Using Rounding
In this video lesson, students will learn how to assess the reasonableness of subtraction problems by using rounding. The teacher explains the process of rounding both the minuend and subtrahend to the leftmost place of the smallest...
Curated Video
Subtraction of Multi-Digit Whole Numbers (Part 2)
Subtraction of multi-digit whole numbers.
Curated Video
Integer Subtraction: From Basics to Advanced Challenges
Do you need a quick refresher on how to subtract integers? I will show you how to use the additive inverse rule for subtracting integers. In addition, I will walk you through three examples, giving you step-by-step directions as well as...
Crash Course
Fluids at Rest: Crash Course Physics
In this episode of Crash Course Physics, Shini is very excited to start talking about Fluids. You see, she's a Fluid Dynamicist and Mechanical Engineer, so fluids are really important to her. Actually they're really important to anyone...
Curated Video
Review for You: Regrouping
Mr. Addit reviews the method of using regrouping and carrying to add 2, 2-digit numbers and 2, 3-digit numbers. He reviews the method of regrouping and borrowing to subtract 2, 2-digit numbers and 2, 3-digit numbers.
Brainwaves Video Anthology
Matine Khalighi - Teachers Make a Difference - Amy Bainbridge
Matine Khalighi, a 19-year-old student from Colorado now studying at Harvard, Cambridge, Massachusetts.Matine Khalighi’s interest in helping others began in middle school when he enrolled in a community service class to research a social...
National Geographic
How 3-D Imaging Helps Archaeologists Preserve the Past | National Geographic
Archaeologist and National Geographic explorer Luis Jaime Castillo and archaeologist Carlos Wester are determined to protect the cultural heritage at the pyramid complex of Chotuna-Chornancap, which was built by the Sicán, or Lambayeque,...
National Geographic
How 3-D Imaging Helps Archaeologists Preserve the Past | National Geographic
Archaeologist and National Geographic explorer Luis Jaime Castillo and archaeologist Carlos Wester are determined to protect the cultural heritage at the pyramid complex of Chotuna-Chornancap, which was built by the Sicán, or Lambayeque,...
Curated Video
Remainders
Mr. Addit demonstrates how to divide two-digit numbers by one-digit numbers, and he explains what happens when there is a remainder.
Brian McLogan
How to subtract a larger number from a smaller number
👉 You will learn how to add and subtract integers. We will work through adding and subtracting two integers up to multiple integers. We can look at adding and subtracting integers by looking at there values on a number line where there...
Curated Video
Review for You: Division With Remainders
Mr. Addit reviews place value division with and without remainders.
Curated Video
From Counting Cans to Feeding Families: The Math of a Food Pantry
Join us on an exciting trip to People In Need food pantry in Delaware County, Ohio! We'll go behind the scenes to see how they use math every day to help families in their community. From counting items to ensure families receive the...
Curated Video
Mastering Long Division
Sometimes the numbers in math problems aren't always nice and easy numbers to work with. Long division can be frustrating sometimes, especially when the numbers are hard to work with. In this lesson, we'll show you some common types of...
Curated Video
Assessing the Reasonableness of Products Using Front End Estimation
In this lesson, students will learn how to assess the reasonableness of multiplication problem answers using front end estimation. They will practice keeping the first digit of both factors the same and then multiplying to check if the...
Curated OER
Singapore Math: Grade 3a, Unit 2 (Part 3)
Using three-digit numbers, this video discusses the process used to add and subtract with regrouping. The instructor also focuses on determining when and when not to regroup. It describes precisely what is happening when a problem...
Curated OER
How Do You Solve a Decimal Inequality Using Subtraction?
Isolate the variable to solve any equation. This equation happens to be an inequality but is solved no different than if it were just an equation. Use the subtraction property of inequality to solve this given problem. The numbers are...
Curated Video
Reporting - Safety and Abuse Tool
Keep your charges safe online with instruction on how to report problems on YouTube. After providing learners with information on the Safety and Abuse Tool, demonstrate how to use the tool and discuss the feature. In groups, learners...
Khan Academy
Singapore Math: Grade 3a, Unit 2 (Part 11)
Solving two-step word problems is a great way to build strong critical thinking and creative problem-solving skills. This video showcases three-word problems involving multi-digit addition or subtraction. Sal highlights essential...
Curated OER
Singapore Math: Grade 3a, Unit 2 (part 11)
Solving 2-step word problems is a great way to build strong critical thinking and creative problem-solving skills. This video showcases three word problems involving multi-digit addition or subtraction. Sal highlights important...
Khan Academy
Khan Academy: Missing Number for 3 Digit Subtraction Within 1000
Use number lines to find the missing value in multi-digit subtraction problems.
Khan Academy
Khan Academy: Three Digit Subtraction Word Problems
Work through a word problems that involve 3-digit subtraction.
Khan Academy
Khan Academy: Subtraction by Breaking Apart
Solve 2 and 3-digit subtraction problems by breaking apart the numbers by place value.