2 km -( 1000) m = 1000 m.

8400 m =(8) km +(400) m

36 mm +54 mm =(9) cm

95cm-65cm =(3) decimeter

1m-60cm =(40) cm

(2) A candle 1 decimeter is 3 cm long, and there are 6 cm left after being lit for a period of time, so it burns (7) cm.

A bamboo pole is 4 meters long. Cut it into the same 8 sections, and each section should be cut into (5) decimeters.