Answer
(1) 0.34 kg =

(a) 340 g

(b) 3.4 g

(c) 0.00034 g

(2) the distance to toronto is 100 km, which is equivalent to

(a) 1,000 m.

(b) 10,000 m.

(c) 100,000 m.

(3) to move from meter to millimeter,

(a) divide by 100.

(b) divide by 1,000.

(c) multiply by 1,000.

(4) the 100m dash is approximately a

(a) 100 dekameter dash.

(b) 10 dekameter dash.

(c) 1 dekameter dash.