Lumos Video Store
This page provides a list of educational videos related to Subtract Decimal Numbers. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Subtract Decimal Numbers.
Adding and Subtracting Decimals
By TeacherTube Math
This video is from the TeacherTube website and the instructor shows how to add and subtract decimals. She shows how to line up the decimal points in the numbers. Instructor appears to be using computer software for demonstration.
Mapping Diagrams | MathHelp.com
By MathHelp.com
This lesson covers subtracting decimals. Students learn to subtract decimals by first lining up the decimal points, then subtracting the numbers by column. For example, to subtract 9.514 -- 1.6, first line up the decimal points, then subtract the digits the thousandths column, to get 4 - 0, or 4, then subtract the digits in the hundredths column, to get 1 -- 0, or 1, then subtract the digits in units column, by borrowing a 1 from the 9 in the units column (which leaves an 8 in the units column), to get 15 -- 6, or 9, then subtract the digits in the units column, to get 8 -- 1, or 7. So 9.514 -- 1.6 = 7.914.
Subtracting Decimals | MathHelp.com
By MathHelp.com
This lesson covers customary unit conversions. Students learn the following customary units of measurement: inch, foot, ounce, ton, fluid ounce, pint, gallon, yard, pound, cup, quart, and so on. Students also learn to convert from one customary unit of measurement to another using the following conversion factors: 60 seconds = 1 minute, 7 days = 1 week, 3 feet = 1 yard, 16 ounces = 1 pound, 4 quarts = 1 gallon, and so on. Students are then asked to solve problems using conversion factors, such as 18 feet = ____ inches.
Three digit-two digit subtraction with regrouping tens:grade 2
By university of Houston mathematics education
The video describes student strategies for three digit subtraction regrouping tens using concrete, pictorial and abstract models.
Three digit-two digit subtraction with regrouping:grade 2
By university of Houston mathematics education
The video describes a student strategy for subtraction with regrouping using concrete, pictorial and abstract models.
Addition and subtraction with number lines
By Khan Academy
Sal figures out which number line matches up with a 2-digit addition or subtraction problem.
Addition and subtraction with significant figures | Decimals | Pre-Algebra | Khan Academy
By Khan Academy
This video shows us the rules for adding and subtracting measurements to show our level of accuracy. Note that the rules for addition/subtraction with significant figures are VERY different than the rules for mulitplication/division. Think about which number is the most precise!
Multi-step word problem with decimals and subtraction
By Khan Academy
First visualize this word problem then use subtraction and multiplication of decimals and fractions to get at the answer.
Grade 2 Math 2.2, Counting back for Subtraction
By Joann's School
How to count back to subtract by using a number line. Find the difference between two numbers.
Addition & Subtraction of Mixed Numbers: With Same Denominators
By Red River College -Tutoring
Addition & Subtraction of Mixed Numbers: With Same Denominators
Subtracting 1 vs. subtracting 10 | Addition and subtraction within 100
By Khan Academy
Sal talks about the difference between subtracting 1 and subtracting 10.
Subtraction within 100
By Khan Academy
Learn how to subtract 23 from 65 by thinking about tens and ones.
Subtraction within 20
By Khan Academy
Learn how to subtract 14 - 6 by first thinking about subtracting 2 and 4.
Three-Digit Subtraction with Counting Strategies: Grade 2
By university of Houston mathematics education
The video describes counting strategies using place value to subtract.
Subtraction word problems within 10
By Khan Academy
Learn how to solve word problems by subtracting small numbers (numbers 10 or less).
Subtraction within five
By Khan Academy
Learn what it means to subtract. The examples used in this video are 4-3 and 5-2.
Missing numbers in addition and subtraction | 2nd grade | Khan Academy
By Khan Academy
Sal solves missing number in problems like 73 = ___ + 57.
Relate addition and subtraction
By Khan Academy
See the relationship between 2+3=5, 5-2=3, and 5-3=2.