填一填,算一算. (1)9km2=______m2 |
(2)51t=______kg |
(3)600000mL=______L |
(4)130t=______g |
(5)12000000cm2=______m2 |
(6)63000kg=______t |
(7)25t-15000kg=______kg |
(8)30000mL+20L=______L |
(9)260cm2+16dm2=______cm2 |
(10)76000mL-53L=______mL |
(11)16000kg+62t=______t |
(12)2km+300m=______m. | |