Approximation and scientific notation

Write down the measurement 4578 km rounded up to 3 significant figures

Write down the measurement 1.8055cm rounded up to 4 significant figures.

Write down the number of significant figures in 0.102 m

A circle has a radius of 12.4 cm. Calculate the circumference of the circle. Write down your answer correct to 1 dp.

The area of a circle is 20cm² correct to 2 sf. Calculate the radius of the circle corrected to 2 sf

The radius of a calcium atom of 0.000000000 197 m. Write down this measurement in the form a x 10ⁿ, where 1 < a < 10 and n is an integer:

Write down 5.04E7 found on a calculator display in scientific notation

Find the volume of the computer chip shown in the figure. Give your answer in standard form.