# Using a Calculator Level 2

## Questions to test your ability to use a basic calculator, scientific calculator and a graphic display calculator.

##### BIDMASWorkoutBasicScientificGraphic displayDescriptionHelpMore...

Before beginning this exercise you might find it worthwhile to revise the key calculator skills on the Calculator Workout page first.

This is level 2; Using a scientific calculator. The questions provide practice using a calculator to obtain results accurately. You can earn a trophy if you get at least 9 questions correct.

1. Mr Mushnik is 42, his twin brothers are 49 and his twin sisters are 51. What will the sum of their ages be in 17 years time?
2.
 7 11
×
 6 7
3.
 5 13
+
 5 15
4.
8
 5.9 + 3.8 1.6
5.
 − 19.3 −√19.3² − 4 × 5.4 × 5.8 2 × 5.4

6.
 √6.8² − 1.6² + √4.5² − 1.6² √6.8² − 4.5²

7. Calculate 7.5×105 − 3.7×102.
8. 1.75 + 1.44 + 15
9. Calculate 1.6 + 1.2π + 43×π×1.93 giving your answer to two decimal places.
10. Evaluate 9sin(63o) + cos²(33o) giving your answer to two decimal places.
11. If tan(wo) = 0.38 find the value of w to two decimal places.
12. Convert the angle 12o52'10" to its decimal equivalent to two decimal places.
Check

This is Scientific calculator. You can also try:
BIDMAS Calculator Workout Basic calculator Graphic display calculator

## Instructions

Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file.

## More Activities:

Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician?

Comment recorded on the s /Indice 'Starter of the Day' page by Busolla, Australia:

"Thank you very much for providing these resources for free for teachers and students. It has been engaging for the students - all trying to reach their highest level and competing with their peers while also learning. Thank you very much!"

Comment recorded on the 19 June 'Starter of the Day' page by Nikki Jordan, Braunton School, Devon:

"Excellent. Thank you very much for a fabulous set of starters. I use the 'weekenders' if the daily ones are not quite what I want. Brilliant and much appreciated."

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#### Connect 4 Factors

A mathematical version of the popular Connect 4 game based on getting four numbers with a common factor in a line. Fun for one, two or a whole class of pupils.

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## Go Maths

Learning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths page is an alphabetical list of free activities designed for students in Secondary/High school.

## Maths Map

Are you looking for something specific? An exercise to supplement the topic you are studying at school at the moment perhaps. Navigate using our Maths Map to find exercises, puzzles and Maths lesson starters grouped by topic.

## Teachers

If you found this activity useful don't forget to record it in your scheme of work or learning management system. The short URL, ready to be copied and pasted, is as follows:

Alternatively, if you use Google Classroom, all you have to do is click on the green icon below in order to add this activity to one of your classes.

It may be worth remembering that if Transum.org should go offline for whatever reason, there is a mirror site at Transum.info that contains most of the resources that are available here on Transum.org.

When planning to use technology in your lesson always have a plan B!

Transum,

Thursday, June 13, 2019

"I have just noticed something I hadn’t realised about the Windows calculator. When running in standard mode it operates LTR (2+3x5=25) while in scientific mode it obeys the normal order of operations (2+3x5=17). Worth knowing when learning about BIDMAS or PEMDAS

"

Sunday, June 16, 2019

Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments.

For Students:

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## Description of Levels

BIDMAS - Learn about the order of operations.

Calculator Workout - Examples of all the major calculator operations.

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Level 1 - Basic calculator quiz.

Level 2 - Scientific calculator quiz.

Level 3 - Graphic display calculator quiz.

More on this topic including lesson Starters, visual aids and investigations.

Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

## Examples

Click on a link below to see an example and an animated key-press diagram of a calculator.

Skill 1: Basic Operations e.g. Calculate the value of $$9+4−7$$

Skill 2: Using Brackets e.g. Calculate the value of $$5(9-4)$$

Skill 3: Percentage of a quantity e.g. What is $$24% of 1800$$?

Skill 4: One quantity as a percentage of another e.g. What is $$45$$ as a percentage of $$150$$?

Skill 5: Squares and square roots e.g. Calculate the value of $$\sqrt{5^2 + 12^2}$$

Skill 6: Indices e.g. $$(3^3 + 2^4)^2$$

Skill 7: Cube roots e.g. Find the value of $$\sqrt[3]{27}$$

Skill 8: Standard Form e.g. Express $$236731$$ in standard form correct to 3 significant figures.

Skill 9: Areas of circles e.g. [Give all answers correct to three significant figures]. e.g. Find the area of a circle with a radius of 9cm.

Skill 10: Fraction calculations e.g. Find the value of $$3\frac13 + 2\frac25$$

Skill 11: Trigonometry e.g. Evaluate $$21 \sin34°$$ to three significant figures 1.

Skill 12: Degrees (or Hours), Minutes and Seconds e.g. Convert the angle 16°35'40" to its decimal equivalent.

Skill 13: Using Variables e.g. If $$A = 1.62$$, $$B = 9.87$$ and $$C = 5.62$$
evaluate $$AB+BC−AC$$.

Skill 14: Combinations e.g. How many different groups of 3 can be selected from 8?

Skill 15: Permutations e.g. In how many different ways could 1st, 2nd and 3rd place prizes can be awarded to 3 of 8 competitors?

Please remember to type in the zero before the decimal point for answers such as 0.4 because only typing in .4 will be marked incorrect.

Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can double-click the 'Check' button to make it float at the bottom of your screen.

Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

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