Please help with all of them ASAP I will give brainliest

1a. 5000 mg 1b. 17kg
2a. 4 Kl 2b. 51L
3a. 60 cm 3b. 8000 mm
4a. 4000000 ml 4b. 46 Kl
5a. 42000 mm 5b. 12000 m
6a. 2150 mg 6b. 4200 g
7. Duanes pencil is 6 millimeters longer
8. Pedros stack of coins weighs 20700 milligrams more.