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⭐️ https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. Calculating the percentage of a number using three different methods. * Using the percentage button on a calculator. * Converting the percentage to a decimal before multiplying. * Converting the percentage to a fraction before multiplying. 2. Understanding the equivalence between ...

This video covers how to find the 'relative formula mass', which is the sum of the relative atomic masses of all the atoms within a molecule or compound. It also covers how to find the the percentage mass of a particular element in a compound. This video is suitable for: - Higher and Foundation tiers - All exam boards - Triple and combined science

For thousands of questions and detailed answers, check out our GCSE workbooks https://www.amazon.co.uk/Dr-Shaun-Donnelly/e/B084FH9JPF?ref_=dbs_p_pbk_r00_abau_000000&_encoding=UTF8&tag=freesciencele-21&linkCode=ur2&linkId=1fbc0f5c3e7450e895637b56ee343168&camp=1634&creative=6738 Great deals on workbooks for schools https://www.freesciencelessons ...

⭐️ https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. Calculating the original value of an item after a percentage increase or decrease. * Understanding that the original value represents 100%. * Relating the new value to a percentage of the original value. 2. Method for calculating reverse percentages using the new value. 3 ...

In this video we cover: - The idea that devices aren't 100% efficient - What efficiency is - The equation for efficiency - Examples of how to calculate efficiency - Why some devices like electric heaters are sometimes considered to be 100% efficient General info: - Suitable for all GCSE and IGCSE courses Exam board specific info: AQA ...

This video covers how to find bearings. We cover the main threes rules (always measure from north, always measure clockwise, and always write with 3 digits), then do an exam style question. This video is suitable for maths courses around the world. KS3 - All on your course GCSE Foundation - All on your course GCSE Higher - All on your course A ...

This youtube video tutorial on percentages made easy explains how to calculate the percentage of a number mentally using your head without a calculator. This video contains plenty of shortcuts and tricks explaining how to find a percentage of a whole number. it goes over the basics and explains how to check your answer using your calculator. To ...

⭐️ https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. Understanding and applying the formula for percentage change. 2. Identifying the 'change' and 'original' values in different scenarios. 3. Calculating percentage decrease using the formula. 4. Calculating percentage increase using the formula. * How to find the 'change' when only ...

⭐️ https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. Understanding Ratios. 2. Simplifying Ratios. * Understanding that simplification doesn't change the proportional relationship. 3. Different Types of Ratios. * Calculating ratios involving totals (part-to-whole comparison). * Writing and simplifying ratios involving more than two ...

This video covers: - How to increase or decrease a number by a given percentage. We cover 2 methods: 1) Find the percentage change, and then add or subtract it from the original 2) The multiplier method This video is suitable for maths courses around the world. KS3 - All on your course GCSE Foundation - All on your course GCSE Higher - All on ...

Record high GCSE grades in a second year of exams disrupted by the pandemic.

⭐️ https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. Understanding how ratios represent relationships between quantities. 2. Converting ratios into fractions that show a part of the total amount. 3. Converting ratios into fractions that compare one quantity directly to another. 4. Applying these conversion methods using worked ...

For thousands of questions and detailed answers, check out our GCSE workbooks https://www.amazon.co.uk/Dr-Shaun-Donnelly/e/B084FH9JPF?ref_=dbs_p_pbk_r00_abau_000000&_encoding=UTF8&tag=freesciencele-21&linkCode=ur2&linkId=1fbc0f5c3e7450e895637b56ee343168&camp=1634&creative=6738 Great deals on workbooks for schools https://www.freesciencelessons ...

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This chemistry video tutorial explains how to find the empirical formula given the mass in grams or from the percent composition of each element in a compound. If you're given the mass percent, you can simply treat it as if you were given the mass in grams. This video explains how to find the molecular formula given the molar mass of the ...

This video covers the properties you need to know about the 4 types of triangles, namely equilateral triangles, isosceles triangles, right-angle triangles and scalene triangles. This video is suitable for maths courses around the world. KS3 - All on your course GCSE Foundation - All on your course GCSE Higher - All on your course A-level - Not ...

This video covers: - How to work with whole to part ratios - Scaling up ratios This video is suitable for maths courses around the world. KS3 - All on your course GCSE Foundation - All on your course GCSE Higher - All on your course A-level - Not on your course Maths Playlist: https://www.youtube.com/playlist?list=PLidqqIGKox7XPh1QacLRiKto ...

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⭐️ https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. Introduction to chemical reactions in industry. 2. Definition and purpose of Atom Economy. 3. The equation for calculating Atom Economy. 4. Worked example calculating Atom Economy. * Calculating the Mr of reactants and the desired product. * Calculating the final percentage atom ...

In this video, you'll learn: - How crude oil is formed - How crude oil is separated using fractional distillation - The process of fractional distillation - Some of the common products of fractional distillation, and their uses

For thousands of questions and detailed answers, check out our GCSE workbooks https://www.amazon.co.uk/Dr-Shaun-Donnelly/e/B084FH9JPF?ref_=dbs_p_pbk_r00_abau_000000&_encoding=UTF8&tag=freesciencele-21&linkCode=ur2&linkId=1fbc0f5c3e7450e895637b56ee343168&camp=1634&creative=6738 Great deals on workbooks for schools https://www.freesciencelessons ...

View more at http://www.MathAndScience.com. In this lesson, we will learn what a percentage is and understand why percent is an important concept in math. A percent is when we express something as it compares to the number 100. The word percent literally means "per one hundred". We use percent when discussing probability, fractions, statistics ...

Welcome to Finding a Percent of a Number with Mr. J! Need help with calculating percentages? You're in the right place! Whether you're just starting out, or need a quick refresher, this is the video for you if you need help with calculating the percent of a number. Mr. J will go through finding percentage examples and explain the steps of how ...

// Welcome to our mini revision session! This video covers Law enforcement in Britain from 1000-1500. Time Stamps: 0:23 Law Enforcement 1:15 Definition of Crime 1:30 Crime against the person 1:42 Crime against property 1:47 Crime against authority 2:16 Norman Law Enforcement // DETAILS This is from the Edexcel GCSE History Syllabus Crime and ...

If you want to increase a number by a certain percentage, follow these steps: Add 100% with the required% Express the percentage in rational form Multiply by the number you wish to increase If you want to decrease a number by a certain percentage, follow these steps: Subtract the required % from 100%. Express the percentage in rational form ...

Following on from your understanding of multiplying by 10, 100 and 1000, this is the next logical step! You can do this, and there are practice exercises on my website. Here's the link: https://www.letsdomath.ca/multiply-and-divide-decimals

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Practice this and other Maths GCSE questions over at my website: https://mathskitchen.com/questions/tip/5ccc33e0db5bff096b9d24ab/?utm_source=YouTube&utm_medium=descriptionlink&utm_campaign=precentagesmental In this video we look at finding percentages of an amount without using a calculator. By the end you'll be able to answer questions like ...

A video revising the techniques and strategies for working out reverse percentages using the bar method (non-calculator) - Higher Only This video is part of the Percentage module in GCSE maths, see my other videos below to continue with the series. These are the calculators that I recommend: Casio fx-83GTX Scientific Calculator, Black - https ...

Biology Professor (Twitter: @DrWhitneyHolden) teaches you how to calculate a percentage by dividing the number of parts by the total. Examples in biology include the percentage of a population with a certain allele, the percentage of a population that contracts a disease, and the percentage of pollutants in a lake.

#UKNationalParksIn100Seconds What do the UK's National Parks really look like? To see what these landscapes are made-up of, let's go on a walk. Each second of the walk reveals 1% of our National Parks and how they appear from above. Are you ready for the UK's national parks in 100 seconds? Subscribe: http://bit.ly/NatGeoSubscribe About National ...

Fractions, Decimals & Percentages | Numbers | Maths | FuseSchool Fractions, decimals, and percentages are three ways of representing the same value, so we can convert between them. The decimal value of 1, is the same as 100%. Therefore a percentage value is always 100 times greater than its equivalent decimal. To find the percentage value for 0 ...

⭐️ https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. Understanding Proportions. * Representing proportions as fractions, decimals, and percentages. 2. Converting Between Fractions, Decimals, and Percentages. 3. Memorising Common Equivalents. * Using tables to learn equivalents. * Recognising simplified fractions and their ...

Using the formula (%) over (100) equals (is) over (of) to solve for the unknown percent (%) value. This video goes over the definition for an equation and percentage. Taking the time to go step-by-step to solve the equation. This is the 1st video in a 5 video series. Problems from intro-algebra, introduction to algebra, beginning algebra, algebra.

This video is all about ratio - sharing GCSE. For more practice here's https://youtu.be/wUv1xW7FEqQ, or please visit https://www.3minutemaths.co.uk/ratio-gcse-exam-questions/ for video, worksheet and answers. Visit http://www.udemy.com/how-you-can-be-good-at-maths-and-great-at-fractions/ for my new course. .. or click here for a limited 50% ...

A video revising the techniques and strategies for multiplying and dividing with standard from (non-calculator). This video is part of the Number module in GCSE maths, see my other videos below to continue with the series. These are the calculators that I recommend: Casio fx-83GTX Scientific Calculator, Black - https://amzn.to/2P2cyGG Casio Fx ...

For more like this go to https://www.letsdomath.ca/ It's an easy-to-use route to resources, faster than scrolling through videos on YT! First contact with percentages should be easy to get your head around. Enter: the equivalents. After doing decimal to fraction equivalents, and fraction to decimal equivalents, this makes a lot of sense. It ...

GCSE Maths revision tutorial video. For the full list of videos and more revision resources visit https://www.mathsgenie.co.uk

This video covers: - What a resultant force is - What free body diagrams are - How to calculate the resultant force from a free body diagram - The idea of splitting up the forces into horizontal and vertical components General info: - Suitable for all GCSE courses - See below for whether it is higher or foundation tier for your exam board - See ...

GCSE Maths revision tutorial video. For the full list of videos and more revision resources visit https://www.mathsgenie.co.uk

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This video explains how to answer compound interest questions. It covers how to approach calculator and non-calculator questions. Practice Questions: https://corbettmaths.com/2019/09/02/compound-interest-practice-questions/ Textbook Exercises: https://corbettmaths.com/2019/09/27/compound-interest-textbook-exercise/

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In this video we cover how you convert decimals to percentages, which we can do by multiplying them by 100. KS3 - All on your course GCSE Foundation - All on your course GCSE Higher - All on your course Maths Playlist: https://www.youtube.com/playlist?list=PLidqqIGKox7XPh1QacLRiKto_UlnRIEVh GCSE Chemistry playlist: https://www.youtube.com/watch ...

100 Simple India General Knowledge (GK) quiz with questions & answers for School students, Children and who prepares for competition examination for 20121. 100 India GK Quiz questions and answers Questions Important for all kinds of Indian Student in English. ------------------------------------ 1: What is the name of our country? 2: What is ...

This video shows how to find percentages of amounts that are typically asked on non-calculator exams. This video shows how to approach more difficult questions that may appear on calculator exams https://youtu.be/5e9SoWxDGtQ Exam Questions: https://corbettmaths.com/wp-content/uploads/2013/02/percentage-of-an-amount-non-calculator-pdf1.pdf Exam ...

A video revising the techniques and strategies for solving direct and inverse proportion problems. (Higher Only). This video is part of the Ratio & Proportion module in GCSE maths, see my other videos below to continue with the series. These are the calculators that I recommend 💎 Casio fx-83GTX Scientific Calculator, Black - https://amzn.to ...

Can you calculate 85 percent of 24 in your head? This is not as hard as it sounds. If you know how to halve numbers and divide by 10 you can probably do this in your head. This video explains how to calculate many percentages as a combination of ones that are easier to compute. If you like my videos, you can support me at Patreon: http://www ...

Here is exactly what I did to get all 9's in my GCSE exams with a few 100%s. History. Physics. Biology. Chemistry. Maths. Business. PE. English Literature. English Language. I managed to achieve all 9's at GCSE and would like to help as many others as possible to achieve the grades that they wish to achieve. In this video, I cover what I did to ...

http://ed.ted.com/lessons/what-percentage-of-your-brain-do-you-use-richard-e-cytowic Two thirds of the population believes a myth that has been propagated for over a century: that we use only 10% of our brains. Hardly! Our neuron-dense brains have evolved to use the least amount of energy while carrying the most information possible -- a feat ...