Instructional Video5:08
Curated Video

Missing Numbers in Subtraction and Multiplication: Solving for the Unknown

3rd - 5th
This video shows the process for solving the problem presented in SATs 2022 Paper 3 Q12, which involves finding missing numbers. Students will learn how to use multipication, division, and subtraction to solve for the unknown value in...
Instructional Video5:47
Curated Video

Using Subtraction to Find Missing Numbers

3rd - 5th
This video shows the process for solving the problem presented in SATs 2022 Paper 3 Q5, which involves using subtraction to find missing numbers. Students will understand how to analyze data in a table to ascertain which arithmetic is...
Instructional Video6:32
Curated Video

Strategies for Finding Missing Numbers in Addition and Subtraction

K - Higher Ed
In this lesson, students are introduced to another strategy for problem solving: number bonds. Number bonds are useful when finding the unknown number in a problem, such as 8 + ? = 11. They can be used for addition and subtraction,...
Instructional Video5:10
Curated Video

Using Skip-Counting to Solve Missing Number Puzzles

K - 5th
This video explains demonstrates the connection between skip-counting and repeated addition, as well as the relationship between addition and subtraction. The video provides strategies for identifying the pattern and determining the...
Instructional Video1:08
Curated Video

Missing Numbers in Addition: Solving for the Unknown

3rd - 5th
This video shows the process for solving the problem presented in SATs 2022 Paper 2 Q3, which involves finding a missing number. Students will learn how to use addition and subtraction to solve for the unknown value in an addition problem.
Instructional Video2:21
Lingokids

Subtraction Song (Who Stole the Missing Block?)

Pre-K - 3rd
Learn math with music! This song teaches children about subtraction with numbers 1 to 10. Make learning fun with songs that can help new information stick!
Instructional Video28:09
Curated Video

Solve equations involving the subtraction of two-digit numbers

Pre-K - Higher Ed
Pupil outcome: I can solve equations involving the subtraction of two-digit numbers. Key learning points: - The known part can be partitioned into tens and ones before subtracting to help subtract two-digit numbers. - Known facts and the...
Instructional Video6:50
Curated Video

Building Fact Families with Addition and Subtraction

K - Higher Ed
In this lesson we explore fact families: three numbers that make addition and subtraction sentences together. Learning fact families helps students relate addition and subtraction, solve for unknowns, and identify missing addends. I'd...
Instructional Video1:08
Brian McLogan

How to finding the whole length of a segment given two parts

12th - Higher Ed
👉 Learn how to find the missing measure of a segment. A segment is a line that has two endpoints. A segment can be subdivided into several portions. The length of the segment is the sum of all the sub-divisions of the segment. Thus, when...
Instructional Video4:30
Brian McLogan

Learn how to subtract two polynomials by including missing place values

12th - Higher Ed
👉 Learn how to subtract polynomials. To subtract polynomials, we first simplify the polynomials by removing all brackets. Then, we combine like terms. Like terms are terms that share the same base and power for each variable. When you...
Instructional Video5:25
KnowMo

Using Number Lines for Counting, Addition, Subtraction, and Ordering Fractions and Decimals

3rd - 12th
In this lecture presentation on number lines, the presenter explains the usefulness of number lines in counting up or down numbers, representing addition and subtraction, and measuring in real-life applications such as flying a plane or...
Instructional Video3:35
Curated Video

Finding Missing Parts in Part-Whole Models

K - 12th
This video teaches learners how to find a missing part in a number sentence, using a part-whole model.
Instructional Video9:23
Curated Video

Division, Multiplication and Subtraction

K - 12th
Understand division and its relation to multiplication and repeated subtraction.
Instructional Video3:56
Curated Video

Comparing Small Numbers Using Scientific Notation

K - 5th
This video, demonstrates how to write small numbers in scientific notation and emphasizes the importance of understanding the power of 10 in determining which number is larger. Through examples, viewers learn how to estimate the...
Instructional Video4:10
Curated Video

Finding the Missing Element

K - 12th
Find the missing term in a given number pattern.
Instructional Video26:25
Curated Video

Understand subtraction as decreasing an amount

Pre-K - Higher Ed
Pupil outcome: I can describe and interpret subtraction stories which involve decreasing an amount and write equations to represent this. Key learning points: - Decreasing the first amount in a story is a type of subtraction. - It can be...
Instructional Video5:24
Curated Video

Solving Equations with Number Bonds

K - 5th
This video is a math lesson aimed at teaching students how to solve the unknown number in an equation by creating a number bond. The video covers topics such as addition, subtraction, commutative property, fact families, and how to...
Instructional Video7:39
Curated Video

Nuclear Equations: Understanding Radioactive Decay and Balancing Equations

9th - Higher Ed
The video is a lecture on nuclear equations, which explains how radioactive decay can be written in the form of an equation. The lecturer describes the symbols for alpha and beta particles and demonstrates how to balance equations on...
Instructional Video27:10
Curated Video

Use efficient methods to solve subtraction equations

Pre-K - Higher Ed
Pupil outcome: I can use efficient methods to solve subtraction equations. Key learning points: - Consecutive numbers always have a difference of 1 - If the whole and the known part in a subtraction equation are consecutive numbers, the...
Instructional Video32:11
Curated Video

Find the missing part when subtracting two-digit numbers

Pre-K - Higher Ed
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...
Instructional Video24:33
Curated Video

Solve subtraction problems using knowledge of 10 and a bit

Pre-K - Higher Ed
Pupil outcome: I can solve subtraction problems using knowledge of 10 and a bit in different contexts. Key learning points: - The teens numbers can be represented as ten and a bit. - We can solve addition and subtraction problems with...
Instructional Video21:41
Curated Video

Identify knowns and unknowns in subtraction equations

Pre-K - Higher Ed
Pupil outcome: I can identify knowns and unknowns in subtraction equations. Key learning points: - Equations can be represented using part-part-whole or bar models. - If the minuend is missing, you add the subtrahend and difference. - To...
Instructional Video23:22
Curated Video

Partition a whole into two parts and write as a subtraction equation

Pre-K - Higher Ed
Pupil outcome: I can partition a whole into two parts and express this as a subtraction equation. Key learning points: - When the whole and one part of the whole is known, subtraction can be used to find the missing part. - This can be...
Instructional Video16:44
Curated Video

Explain the difference between consecutive even numbers

Pre-K - Higher Ed
Pupil outcome: I can explain the difference between consecutive even numbers. Key learning points: - Consecutive even numbers have a difference of 2 - We can use our knowledge to solve missing number problems when 2 is the known part.

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