paper 2 calc

• What topics are covered in the higher paper 3 on the Edexcel advanced information list?

  Higher paper 3 topics
• How can students access the checklist mentioned in the video?

  By clicking the link in the description
• What should students do if they are unsure about a particular topic?

  Make it their priority for revision
• Why is it important to review all types of questions on a topic?

  To prepare for various question formats
• What is the first step when accessing the video description?

  Click on the link for the checklist
• What does the video provide links to besides the checklist?

  Free practice booklet and full lessons
• How can students use the practice booklet effectively?

  By working through questions during the video
• What should students do if they want to review a specific topic in the video?

  Use the chapters feature to navigate
• What is the expression for simplifying $3^2 \times 3^5 \div 3^3$?


  $3^4$
• How do you simplify $3^2 \times 3^5$?


  Add the powers to get $3^7$
• What is the final answer when simplifying $3^7 \div 3^3$?


  $3^4$
• What is the value of $5^7 \times 5^{-3} \div 5^2$?


  25
• What does "write down the value" mean in the context of the question?

  Calculate the numerical value, not a power
• How do you find the lower bound for $v =$$\frac{s}{t}$?


  Use the lower bound of $s$ and upper bound of $t$
• What is the error interval for $s =$$2.34$ correct to two decimal places?


  Lower: $2.335$, Upper: $2.345$
• What is the upper bound for $t =$$1.3$ correct to one decimal place?


  $1.35$
• Why is it important to write down error intervals in exams?

  To secure marks even if calculations fail
• What is the formula for speed?

  Speed = Distance / Time
• How do you determine the average speed of the train?

  By calculating distance divided by time
• What is the distance of the train journey?

  260 miles
• How is the time for the train journey expressed?

  Three hours, correct to the nearest five minutes
• What is the lower bound for the average speed calculation?

  Use the lower bound of distance and upper bound of time
• How do you find the average speed if the journey is 260 miles in three hours?

  Calculate $\frac{260}{3}$