1a. 18,2 ml = 0,0182 l
1b. 22 mg = 22 x 10 -6 kg
1c. 2,3 dm3 = 2,3 l
1d. 4,5 x 10-4 l = 0,45 ml
1e. 8 mg = 0,008 g
1f .12,44 l = 12,44 dm3 = 12440 cm3
1g. 2,99 x 104 g = 2,99 x 107 mg
1h. 1,2 x 105 = 120 ton
2. ƥ van aluminium = 2,7 kg/dm3 = 2,7 g/cm3 = 2,7 g/ml
3. ƥ = m/v dus m = ƥ x v = 13,5 x 0,03 = 0,405 g
4. m = ƥ x v
v = l x b x h = 0,85 x 0,85 x 0,85 = 0,61 cm3
ƥ = 0,58 g/cm3
m = 0,58 x 0,61 = 0,35 g
5. m = ƥ x v
v = 56 m3
ƥ = 1,293 kg/m3
m = 56 x 1,293 = 72,4 kg
6a. v = oppervlakte x h = 15000 dm2 x 0,75 dm = 11250 dm3 =11,25 m3
m = ƥ x v = 11,25 x 917 = 10316,25 kg
6b. v = m/ ƥ = 10316,25 l