Curated Video
Using the Commutative and Associative Properties to Add 2-Digit Numbers
In this video, students will learn how to use the properties of addition, such as the commutative and associative properties, to solve addition problems with two-digit numbers. They will also review the value of each digit within a...
Curated Video
Solve problems involving the addition of two-digit numbers
Pupil outcome: I can solve problems involving addition of two-digit numbers. Key learning points: - Partitioning the addends can help us to solve problems involving two-digit numbers. - Once we have written the equation, we must think...
Curated Video
Solve problems by adding and subtracting tens and ones
Pupil outcome: I can solve problems that require the addition and subtraction of tens and ones. Key learning points: - When tens and ones are combined to make a two-digit number, it can be represented as an addition equation. - When a...
Curated Video
Find the missing part when subtracting two-digit numbers
Pupil outcome: I can solve missing number equations involving subtracting two-digit numbers. Key learning points: - The parts and the whole can be rearranged to help us solve equations. - A bar model or a part-part-whole model can be...
Curated Video
Two-Step Word Problems
The video “Two-Step Word Problems” identifies keywords for addition and works through several addition word problems that require two steps to solve.
Curated Video
Rounding Numbers and Solve Them
Welcome to our fun and interactive math video on addition, perfect for primary school children! In this video, we’ll explore the basics of addition in an easy and engaging way. Whether your child is just starting to learn about adding...
Curated Video
Rounding Numbers to the Nearest 100 with Estimation
Welcome to our fun and interactive math video on addition, perfect for primary school children! In this video, we’ll explore the basics of addition in an easy and engaging way. Whether your child is just starting to learn about adding...
Curated Video
Solve problems involving addition and subtraction
Pupil outcome: I can solve problems involving the addition and subtraction of two-digit numbers. Key learning points: - When solving problems, it must be decided whether to add or subtract in order to solve it. - If the ones digits...
Curated Video
Regrouping and Carrying
The video “Regrouping and Carrying” explains how to use regrouping and carrying as part of the standard algorithm for adding two- and three-digit numbers.
Practical Ninjas
How do Digital systems add and subtract in binary? | Binary mathematical operations - I | DE.04
Digital Electronics 04. ----------------------------------- This video covers Binary addition and subtraction with explanatory examples. Binary addition lays the foundation of the arithmetic operations performed by digital systems. This...
Curated Video
What is 28 plus 7?
Welcome to our fun and interactive math video on addition, perfect for primary school children! In this video, we’ll explore the basics of addition in an easy and engaging way. Whether your child is just starting to learn about adding...
Curated Video
Add Three Digits Number Line
The video “Add Three Digits Number Line” demonstrates how to use a number line and knowledge of place value to solve addition equations with 2 addends that are each 3 digits.
Curated Video
Estimating
Mr. Addit demonstrates how to estimate by rounding up or rounding down. He then gives examples in which estimating helps solve a division problem.
Curated Video
What is 12 plus 3?
Welcome to our fun and interactive math video on addition, perfect for primary school children! In this video, we’ll explore the basics of addition in an easy and engaging way. Whether your child is just starting to learn about adding...
Curated Video
MAGICAL Indian Math Discovery - Numbers 495 and 6174 (Kaprekar Constants)
The Indian mathematician Dattaraya Ramchandra Kaprekar discovered the number 6174 is reached after repeatedly subtracting the smallest number from the largest number that can be formed from any four digits not all the same. The number...
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.
Curated Video
Greater than, Less than, Equal To
Mr. Addit begins a discussion of greater than, less than, and equals and provides examples of their usage. He also explains how to place the proper symbol between sets of numbers.
Kids Academy
Numbers Counting to 100 & 1000 | Math for 1st Grade | Kids Academy
We want to help prevent learning disruptions while school is out by offering families, educators, schools, and districts a 50% discount on all our membership plans: https://bit.ly/2xiePZg When teaching math, number sense is critical for...
Khan Academy
Singapore Math: Grade 3a Unit 2 (part 5)
What a great way to present multiple-digit addition! Sal adds the numbers 2803 and 1443. He draws a chart representing each of the four place values from the problem and then draws "place value buckets” to represent what each number...
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...
CK-12 Foundation
Ck 12: Elem Math: Overview of Mixed Operations Numbers to 100
[Free Registration/Login may be required to access all resource tools.] The video uses an example with addition and subtraction to show how to solve a multi-step problem including a description of the actual two-digit addition and...
Khan Academy
Khan Academy: Subtracting a 1 Digit Number With Regrouping
Demonstrates how to solve 35 - 8 using drawings of base ten cubes to show the regrouping of ones and tens. [3:11]