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.
Kindergarten mathematics addition and subtraction open class teaching plan;
First,? Design inte