Using a Calculator Practice Questions

Write down all the figures on your calculator display.

Write your answer to part (a) correct to 2 decimal places.

Find the value of $\sqrt{6.25} + \sqrt[3]{42.875}$

Find the value of $(9.4 - 3.85)^2$

Beth and Carl each use a calculator to work out

$$\frac{21.3 \times 4.87}{0.52}$$

Beth's answer is $19.94826923$

Carl's answer is $199.4826923$

One of these answers is correct.

Use approximations to find out which answer is correct.
You must show your working.

Use your calculator to work out the value of $v$.

Write down all the figures on your calculator display.

Write your answer to part (a) correct to 1 decimal place.

Give your answer as a mixed number.

Give your answer as a decimal.
Write down all the figures on your calculator display.

Write down all the figures on your calculator display.

Write your answer to part (a) correct to 3 significant figures.

Sam keys the calculation into his calculator as

$$28.6 + 5.4^2 \div \sqrt{6.25} + 1.35$$

and gets the answer $41.614$

Explain what Sam has done wrong.