Maths everywhere
Maths everywhere

This free course is available to start right now. Review the full course description and key learning outcomes and create an account and enrol if you want a free statement of participation.

Free course

Maths everywhere

Pressing onwards

Activity 15

  1. Work through Sections 1.6 and 1.7 of the Calculator Book, using the method suggested above of glancing ahead-pressing on-glancing back, if you find it useful.

  2. A number of important mathematical terms were introduced in Chapter 1 of the Calculator Book; for example, square, square root, reciprocal, and so on. Make notes on each new term mentioned (check back in the Calculator Book if you need to).

Answer

  1. There are many answers and comments relating to the exercises at the back of the Calculator Book.

Outcomes

Now that you have completed your work on this section, you should be able to:

  • use the calculator for everyday calculations involving addition, subtraction, multiplication, division, and percentages (Calculator-Book, 1.2 and 1.5);

  • express numbers in scientific notation and understand how this notation is displayed by the calculator (Calculator Book, 1.6);

  • understand the effect on a number entered on the calculator of the x-squared, square root, reciprocal and power keys (Calculator-Book, 1.4 and 1.7);

  • read simple mathematical expressions containing symbols such as +, −, ×, ÷, √ and positive and negative powers (Calculator-Book, 1.2 and 1.6);

  • appreciate the idea of ‘doing’ and ‘undoing’ associated with pairs of specific keys on the calculator, and give some examples of common mathematical ‘doing–undoing’ pairs of operations (Calculator Book, 1.7).

MU120_1

Take your learning further

Making the decision to study can be a big step, which is why you'll want a trusted University. The Open University has 50 years’ experience delivering flexible learning and 170,000 students are studying with us right now. Take a look at all Open University courses.

If you are new to university level study, find out more about the types of qualifications we offer, including our entry level Access courses and Certificates.

Not ready for University study then browse over 900 free courses on OpenLearn and sign up to our newsletter to hear about new free courses as they are released.

Every year, thousands of students decide to study with The Open University. With over 120 qualifications, we’ve got the right course for you.

Request an Open University prospectus