Els elements neutres de les operacions
Completa els buits d’aquestes operacions:
52 – = 52 64 x 1 = 29 x = 0 42 : (1 – 0) = 89 + = 89 22 x (1 + 0) = 92 : = 92 |
103 : 1 = 56 x ( + 1) = 56 77 + 0 = 33 : (1 – ) = 33 61 x 0 = 78 x = 78 200 – 1 = |
Completa els buits d’aquestes operacions:
52 – = 52 64 x 1 = 29 x = 0 42 : (1 – 0) = 89 + = 89 22 x (1 + 0) = 92 : = 92 |
103 : 1 = 56 x ( + 1) = 56 77 + 0 = 33 : (1 – ) = 33 61 x 0 = 78 x = 78 200 – 1 = |