EOY Revision: Significant Figures

State the number of significant figures in 39 018.

(a)  

State the number of significant figures in 0.028 030.

(a)  

Round off 728 to 2 significant figures.

(a)  

Round off 503.88 to 4 significant figures.

(a)  

Round off 0.003 018 5 to 4 significant figures.

(a)  

Round off 6396 to 3 significant figures.

(a)  

Round off 8.076 to 3 significant figures.

(a)  

Round off 6479.952 to the nearest 1000.

(a)  

A truck carries 150 ceramic tiles and 225 marble tiles.

The mass of a ceramic tile is 1.87 kg and the mass of a marble tile is 4.63 kg.

Calculate the total mass of the tiles carried by the truck, giving your answer correct to the nearest 0.1 kg.

(a)  

The dimensions of a rectangular plot of land are 28.3 m by 53.7 m.

Find the area of grass needed to fill up the entire plot of land, correct to the nearest 100 $$m^2$$   .

(a)