Keeping your calculator in radians will help you get accustomed to them faster! You should keep your calculator in Radians mode all the time. If you did it correctly you’ll find the answer is 4 hours and 19 minutes!Ĭheck out our guide to making awesome HSC Standard Maths study notes here! Tips for HSC Advanced Maths Degrees and Radians You can find the ° ‘ ” button above the ENG button and below the square root button. We can use our calculator to find out quickly and painlessly and we don’t have to worry about rounding over to the next hour. Let’s consider the following example.Įxercise: Suppose Jack works 1 hour and 37 minutes in the morning, and then 2 hours 42 minutes in the afternoon, what’s the total time he worked? Since time calculations are so prone to error, your calculator is perfect. Sure you could do the calculation in your head, but the whole point of a calculator is to help perform calculations and minimise mistakes. Time rolls over in units of 60, unlike our normal numbers, so it’s easy to make mistakes rounding, or when simply adding time. You may already know that this button can be used in Trigonometry to round to the nearest degree, minute or second, but did you know it’s also great for calculations involving time, which are examined in HSC General Maths. This is the fancy mathematical name for calculations using degrees, minutes and seconds. Pro-Tip: Use the replay button to edit previous working, don’t press ON Tips for HSC Standard Maths Using your scientific calculator for time A better thing to do is to use the left arrow key, to edit your previous working, this can save an immense amount of times in exam. If you do this, your previous working will be wiped from memory. If you’re going to be typing a lot of similar calculations and just changing one number don’t press ON. Once you start using the calculator for a long time it’s really hard to change old habits, but here are some important habits you might have, that you should think about. Note you do not need to press ALPHA when storing. This will store the speed of light into the letter ‘c’. (the RCL button is found above the number 7) 3 -> x10^x -> 8 -> = -> SHIFT -> RCL -> hyp First type the number using the scientific notation button, and then store it. Things like the gravitational constant, or the speed of light should be stored in your calculator, they’re really tedious to type, and crucially since they’re constants, they will never change.Įxercise: Let’s practice storing the speed of light into our calculator, it is around 3×10^8. It’s also incredibly useful in subjects like HSC Physics, where you have to use a lot of scientific constants. Your calculator can also store numbers, this is incredibly useful for storing numbers that are irrational, and where writing them down would introduce significant rounding errors. It makes typing scientific notation a whole lot faster and less error prone. If you want to type in a number using scientific notation, you should use the dedicated button, next to the answer and equals button. Your calculator should show the number as 6.512×10^6. 10^3, 10^6, 10^9 etc.Įxercise: Suppose you have the number 6512000, and you’d like to convert it into scientific notation, all you have to do is type in the number and then press “ENG”. Engineering notation is similar to Scientific notation, the only difference is it uses a power of 10 that is divisible by 3, i.e. This button converts numbers into Engineering Notation. One button that’s helpful in making a large number more manageable is the ENG button. It’s easy to make mistakes when converting a number to scientific notation, if it’s really large and you miscount the number of zeroes. The Casio calculator tips I would like to go through are some of the more useful features you should be using, but perhaps haven’t really tried! Hint: The same goes for HSC Maths! Our HSC Maths Tutors Sydney can introduce a collection of other useful tips and tricks that can accelerate your learning!Įasy Scientific Notation on Your Calculator I’m not going to go through how to add and subtract numbers, I trust you’ve figured that out! We’re here to take you through them! Let’s go! Familiarising Yourself with Your Scientific Casio Calculator HSC Standard Maths Tips HSC Advanced Maths Tips HSC Extension 1 Maths Tips HSC Extension 2 Maths Tips Familiarising Yourself with Your Scientific Casio Calculator You’ve probably been using it for years but do you really know all the Casio calculator tips and tricks? The Casio FX82AU PLUS II is one of the most popular scientific calculators in NSW, and for good reason! It’s approved by NESA, and frankly it’s just a fantastic calculator!
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