1, 27 `dm^2` + 112 `cm^2` = 2812 `cm^2`

2, 15 kg = 1512 dkg - 12 dkg = 15 000 g

3, 3 perc 11 másodperc = 191 másodperc

4, 36 dm + 3,4 m = 7 m

5, 555 dl - 54 l = 15 dl

6, 3 nap + 11 óra = 83 óra = 4980 perc

7, 23 kg = 670 dkg + 16,3 kg

8, 6 nap - 105 óra = 39 óra

9, 5 km - 43000 dm = 50000 dm - 43000 dm = 700 m

10, 13 l +14 `dm^3` = 27 `dm^3`

11, 3 nap + 18 óra = 90 óra

12, 19821 m = 27 km - 7179 m = 27 km - 71790 dm

13, 2013 l = 20 hl + 13 l

14, 16 h - 13 min = 947 min

15, 43,27 km = 43270 m = 50000 m - 6730 m

16, 16,5 hl + 32 l = 1682 l

17, 2013 s = 30 min + 213 s

18, 36,28 t = 36280 kg = 36320 kg - 40 kg

19, 12,4 dkg + 65 g = 189 g