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Oblicz
a) 0.4 + 0.3 =
2, 7 + 3, 3 =
2, 24 + 1.47 =
4, 24 + 3, 36 =

b) 0.7 - 0.4 =
3 - 0.4 =
3, 66 - 2, 42 =
5, 52 - 2.37 =

c) 2, 3 * 3 =
2, 4 * 0, 4 =
5, 1 : 3 =
5, 4 : 0.6 =