Calculator which shows working out

The guidelines recommend that adults do strength exercises on at least 2 days each week. It's important not to get too comfortable with your program though!

Muscles need to be continually challenged to get stronger and fitter. Check out our Advanced Home Strength Program for ideas on how to move harder at home. It's also important not to do too much. Muscles ideally require 48 hours to properly recover. If you're doing strength exercise on most days you may want to substitute a gym day for a cardio day — like going for a swim, a run or a long walk. The guidelines recommend that adults minimise the amount of time spent sitting and break up sitting time as often as possible.

Research suggests that you should sit for no more than 7 hours each day and you should break up your sitting time every half hour. Well done, your total time spent sitting is low and you regularly break up siting time during the day. Well done, your total time spent sitting is low, but you need to break up your sitting time more during the day. Well done, you regularly break up sitting during the day, but your total time spent sitting is too high.

Did you know that doing more physical activity can partially offset the health risks of too much sitting? While any amount of physical activity is better than none, research suggests that doing at least 60 minutes of moderate-intensity or 30 minutes of vigorous-intensity activity each day is ideal. The information and technical data in this website is based on our experience, research, and the contributions of the professional organisations we represent.

LiveLighter is pleased to provide this free service to our associates and the general public but assume no legal obligation for the accuracy of the material in this website, giving no representation or warranty in regard to results or performance.

Have you ever wondered if you're active enough? Enter your details to find out. Gender please select Female. Age years. Height cm. Weight kg. Physical Activity How many days per week are you physically active? Note that if you attempt to use for subtraction, for example , you will generate a Syntax Error. Calculate each of the following using your calculator.

In each case, give your answer as a decimal not as a fraction. Remember to press to obtain a decimal answer. You may have been surprised that the correct answer to part 5 is negative. If we wanted to calculate the square of , we write this mathematically as and would need to use the brackets when evaluating it on a calculator. When your calculator is in Math mode, as recommended, fractions are entered using the button in the left-hand column of the function key area of the calculator keypad.

When the button is first pressed, the cursor is located in the top box ready for you to enter the numerator. To move to the bottom box to enter the denominator, use the cursor down key. If there are further parts of a calculation to be entered when the template has been completed, the right cursor key can be used to move out of the denominator in preparation for the input of the rest of the calculation.

Mixed numbers such as can be entered similarly using the mixed number template obtained using the key sequence. This template provides three boxes to fill, one for the whole number part, and one each for the numerator and denominator of the fractional part.

The decimal answer can be obtained by using. Remember to use the cursor right key to move the cursor out of the denominator of the fraction before entering the multiplication sign.

If you obtained the answer , you calculated by mistake. You may have noticed that the results of both these exercises were displayed on the calculator as top-heavy fractions. This is the default behaviour of the calculator in Math mode. You can toggle between a top-heavy fraction and its mixed number equivalent using the key sequence.

Here, the key is used to access part of the on-screen menu that is not initially visible. Remember to use to toggle between the top-heavy fraction and mixed number answers. Remember to use the template obtained using and to use the cursor arrow keys to move between the boxes when inputting the mixed number.

The volume of wood in cubic metres contained in a log of length metres with a distance around its middle of metres is given by the formula. In this section we consider several different approaches that can be used to evaluate this and other more complex expressions using different functions on your calculator. While the first method — considered in Activity 9 — is probably the most straightforward for this relatively simple expression, it is useful to see how you might use other calculator functions when you are faced with more complicated expressions to evaluate.

The expression for the volume of wood requires the value of. You could enter an approximate value for by hand, but this is time-consuming and may be prone to error. The calculator has an approximation for built into it, which is obtained using the key sequence. The key is located on the bottom row of the keypad. The most obvious way of calculating is to enter it as a fraction on your calculator. The key sequence used was.

Note that it is not strictly necessary to include the multiplication between the 4 and the in the denominator since if the sign is omitted, it will be assumed by the calculator.

Another way to carry out the calculation in Activity 9 is to use the key. Can you explain why? Then type this new expression into the calculator and check that you obtain the same answer as in the activity above.

Typing into the calculator and pressing will not give the correct answer because the calculator will follow the BIDMAS rules and divide by 4 and then multiply by , instead of dividing by.

To obtain the correct result, you have to type. Alternatively, you can type. Note that on some later models of the calculator, the correct answer is obtained without adding the brackets to the denominator; however it is good practice to add the brackets to ensure the correct calculation is carried out. An alternative approach to our calculation is to calculate the denominator of the fraction first, and then divide the numerator by this.

You could write down the answer to the first part of the calculation on paper, and enter it into the calculator again. However, it is possible that you may make an error either in writing down the number or in typing it into the calculator. A better method is to use the fact that the calculator retains the last calculated answer, which can then be inserted in the subsequent calculation using the key located at the bottom of the keypad.

Note that the key only remembers the result of your last calculation. Use your calculator to calculate the value of the denominator of , then complete the calculation by finding the value of to 3 significant figures.

A variation on the above method is to break the calculation into two parts, and use the memory functions of the calculator to store the result of the first part.

The calculator memory is particularly useful when you want to calculate the values of several expressions that have a common part. This common part need be entered only once and its value reused several times subsequently.

For example, rewriting the formula for the volume of wood contained in a log as. If we wished to calculate the volume of wood contained in several different logs, it might be efficient to calculate the value of once, store it in memory and reuse this value in the subsequent calculations.

The calculator has several different memories. Before using the calculator memory, it is good practice to always clear any previous data stored in the calculator using the key sequence CLR Memory Yes. To store the result of an expression just calculated i. After selecting the store function, we need to tell the calculator which memory the value is to be stored in.

Once or STO has been pressed, the display indicator RCL or STO is shown on the display to indicate that the calculator is waiting to know which memory to recall store the value from in. The value of which equals 0. This value can then be used to find the final result using M , which gives 0.

Expressions can also be stored in, added to or subtracted from the memory at the same time as they are evaluated by replacing the at the end of a calculation with one of the memory access sequences. For example, to calculate and store the result straight into the memory, use the key sequence STO M. Each memory name is printed in red above the key used to access it. If the result of a calculation is a number greater than or equal to i.

For example, calculating gives the answer. Small numbers are also automatically displayed using scientific notation. However, how small the number needs to be for this to happen depends on the mode the calculator is working in:. In Activity 1 you will have already set your calculator to use Norm 2 mode, and we suggest that for the moment you continue to use this.

You can also set the calculator to always display results using scientific notation with a set number of significant figures using the key sequence SETUP Sci followed by the number of significant figures required, for example.

When your calculator is set in this fashion, the display indicator SCI is displayed at the top of the screen. Numbers expressed in scientific notation can be input directly to the calculator by using the key on the bottom row of keys. For example, can be entered using the key sequence. Use the scientific notation functions of your calculator to calculate each of the following, giving your answer in both scientific and ordinary forms.

In Activity 4 you saw how to use the key to input powers on the calculator. The key can be used with other functions, such as the fraction template , to calculate fractional and negative powers. Calculate each of the following using your calculator, giving your answer correct to 3 significant figures. Just as there are keys on your calculator for entering powers, roots can also be entered directly. Square roots can be calculated using the key.

For example, can be entered using. Cube roots are entered using the second function of this key. For higher roots, such as fourth or fifth roots you need to use the more general template, which is the second function of the key.

Use precise geolocation data. Select personalised content. Create a personalised content profile. Measure ad performance. Select basic ads. Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights.

Measure content performance. Develop and improve products. List of Partners vendors. Tim Fisher. VP and General Manager, Lifewire. Tim Fisher has more than 30 years' of professional technology experience. He's been writing about tech for more than two decades and serves as the VP and General Manager of Lifewire. Facebook Twitter LinkedIn. Updated on November 01, Tweet Share Email. Apps Best Apps Payment Services.

What We Like. What We Don't Like. Was this page helpful? Thanks for letting us know! Email Address Sign up There was an error. Please try again. You're in! Results include a dynamic tutorial and a bar chart. The Learn section includes: How to calculate percent change. Percentage increase example. Percentage decrease example. Evaluates a postfix expression and shows the steps used to arrive at the result using the stack method.

The Learn section includes: How to evaluate postfix expression using stack. Postfix evaluation examples. Evaluates a prefix expression and shows the steps used to arrive at the result using the stack method. The Learn section includes: How to evaluate prefix expression using stack. Prefix evaluation examples. Generate a list of prime natural numbers that are factors of a given number, plus simplify the primes into an exponential expression.

Plus the calculator shows its work so you can verify the result. The Learn section includes: What are Prime Numbers? How to manually find prime factors of a number. Plus, if the number is not prime, it will display the first divisor it found, along with the divisor equation and quotient.

The Learn section includes a brief answer to: What are primes? Create a custom prime numbers list of up to 10, primes, with primes ranging from 2 to , For example, you could either create a delimited list containing the first prime numbers, or a list of the primes that occur between and Plus, you can also tell the generator to format the list into a custom prime numbers chart for printing.

Find the length of the missing side of a right triangle if the other two side lengths are known. Plus, the calculator shows its work and attempts to draw the shape of the calculator based on the results. The Learn section includes: What is the Pythagorean Theorem? Converse of Pythagorean Theorem. Converse Test Calculator. Plus, the calculated results includes the first ratios equal to the reduced ratio. The Learn section includes: What is a ratio?

How to simply a ratio. How to determine if two ratios are equal. How to solve ratio equality problems. How to scale a ratio up or down. Round a number to the desired place and generate the decimal place value chart. Results also include a chart showing the number rounded to all available places. The Learn section includes: How to round a number.

Rounding decimals examples. Plus the calculator shows its work so you can learn the steps to solving each type of operation. Find the slope, y-intercept, and angle of a straight line from two entered points. Plus, the calculator will also find the distance between the two points, and formulate the line equation from the points and slope.

The calculator will also attempt to plot the two points on a graph and draw the line that runs through them. The Learn tab includes: How to calculate slope from two points. How to formulate a line's equation. Plus, if the radicand is not a perfect square, the calculator will list the nearest perfect squares that are greater and less than the radicand. The Learn section includes answers to: What are square roots? What are perfect squares?

Calculate the mean, variance and standard deviation of an entered or pasted-in data set. Plus the calculator converts the results into a step-by-step tutorial that shows you how to manually solve for the standard deviation formula.

The Learn section includes answers to: Don't let the formula scare you! What is Standard Deviation? Population vs Sample statistics. Example problem showing 4 simple steps. Angle values can be entered in degrees or radians.