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KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Finding Missing Numbers - Explained
SchoolOnline's Primary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 9-13, they cover every key topic and sub topic covered in Maths in clear and easy to follow steps.
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Using Skip-Counting to Solve Missing Number Puzzles
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...
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Missing Numbers in Addition: Solving for the Unknown
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.
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Missing Number Math Activity for Kids
Max is looking for missing numbers with pegs. Some children just remember number sequence as a poem, but this activity challenges them to get a better understanding of numbers.
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Missing Numbers in Fraction Addition: Solving for the Unknown
This video shows the process for solving the problem presented in SATs 2022 Paper 3 Q13, which involves finding mission fractions. Students will use the concept of equivalent fractions to determine the missing fraction in an addition...
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Strategies for Finding Missing Numbers in Addition and Subtraction
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,...
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Finding Number Patterns
Mr. Addit reviews the definition of a pattern and explains that to find a pattern in a number sequence, we must first identify the rule. He also demonstrates how to first determine the rule of a number sequence in order to determine the...
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Using redistribution with addition of decimal fractions
Pupil outcome: I can use redistribution with addition of decimal fractions. Key learning points: - If one part is increased and the other is decreased by the same amount, the whole stays the same. - If one part is decreased and the other...
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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...
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Use the additive relationship to rearrange and solve equations
Pupil outcome: I can use the additive relationship to rearrange and solve equations. Key learning points: - When a whole is missing, add the parts together. - To find a missing part, subtract the other part from the whole. - Rearrange...
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Solving Equations with Number Bonds
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...
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Use column addition with regrouping in ones and tens
Pupil outcome: I can use column addition with regrouping in the ones and tens. Key learning points: - When using column addition, start by adding the numbers with the smallest place value first. - Make sure that any regrouped 10s are...
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Recall one and two more or less than numbers to ten
Pupil outcome: I can recall known addition and subtraction facts within 10 Key learning points: - When we add one, we can see this as the number after in our count. We can think of this as one more. - When we subtract one, we can see...
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Develop understanding of the relationship between addition and subtraction
Pupil outcome: I can understand the relationship between addition and subtraction. Key learning points: - Equations can be represented using part-part-whole or bar models - The sum in an addition and the minuend in a subtraction both...
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Solving Unknown Amounts Using Addition and Subtraction Fact Families
The video demonstrates how to solve for unknown amounts using addition and subtraction fact families. The teacher explains the concept of fact families and how they can be represented in a triangle. The video provides examples of how to...
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Solving Unknowns with Addition and Subtraction Fact Families
In this video, students learn how to solve for unknown amounts using addition and subtraction fact families. Through examples and step-by-step instructions, they will understand how to use fact families to find missing addends and...
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Finding Missing Parts in Part-Whole Models
This video teaches learners how to find a missing part in a number sentence, using a part-whole model.
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Explain that different lengths can be composed additively and multiplicatively
Pupil outcome: I can explain that different lengths can be represented as addition and multiplication. Key learning points: - Partitioning 100 in different ways can be used to compose lengths. - There are four 25s in 100 so there are...
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Checking understanding of addition and subtraction with fractions
Pupil outcome: I can use the mathematical structures that underpin the addition and subtraction of fractions. Key learning points: - The denominators of each fraction should split the whole into the same number of equal pieces. - The...
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Addition by bridging through 10
Pupil outcome: I can add two numbers by bridging through ten. Key learning points: - Partitioning addends supports bridging 10. - Pairs to 10 can be used to add two or more addends.
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Review adding 2-digit numbers using column addition without regrouping
Pupil outcome: I can add 2-digit numbers using column addition. Key learning points: - The addends are written in columns with the same value digits in the same column. - Start by adding the numbers with the smallest place value first. -...
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Use place value knowledge to write addition and subtraction equations
Pupil outcome: I can use place value knowledge to write addition and subtraction equations. Key learning points: - The language of unitising helps us to use number facts to add and subtract multiples of 10. - The language of unitising...
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Review using column addition to add 2- and 3-digit numbers by regrouping ones
Pupil outcome: I can use column addition including regrouping ones. Key learning points: - When using column addition, start by adding the numbers with the smallest place value first. - If the sum of the ones digits is ten or greater,...
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Review using column addition to add 2- and 3-digit numbers by regrouping tens
Pupil outcome: I can use column addition to add numbers by regrouping tens. Key learning points: - When using column addition, start by adding the numbers with the smallest place value first. - If the sum of the tens digits is ten or...