Tapping into mathematics
Tapping into mathematics

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Tapping into mathematics

2.2 Setting the number of decimal places

Calculators have different ways of fixing the number of decimal places displayed on the screen. So you may need to check your calculator instruction booklet here. Some calculators use the FIX function and others use a SETUP or key.

To set the number of decimal places on the TI-84, you use the key, which is next to the key. Press the key, then use the curser keys to move to the float line across to the number of decimal places you need. Then press . (To return to the full display, select FLOAT.)

On some calculators, the word FIX is displayed on the screen, so that you know that the answer has been rounded. The TI-84 does not indicate the rounding, so it is a good idea to check the settings each time you use the calculator.

Exercise 2: Change places

Change the number of decimal places displayed to 2 and repeat the sequences used in Exercise 1.

  • (a) 5 7

  • (b) 5 7

  • (c)  5 7

  • (d) 5 7

  • (e) 7

Answer

All the answers will be given to 2 decimal places:

(a) 12.00 (b) 2.00 (c) 35.00 (d) .71 (e) Ans * 7      5.00

You might like to experiment with changing the number of decimal places and then setting the calculator back to FLOAT.

MU120_4MCAL

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