1) 1,9 - 0,4 = a) 1,7 b) 1,6 c) 1,5 2) 5,6 - 0,2 = a) 5,4 b) 5,2 c) 5,8 3) 2,5 - 0,5 = a) 1,7 b) 2 c) 3,1 4) 6,2 - 1,1 = a) 6 b) 5,1 c) 5,2 5) 7,3 - 2,3 = a) 5 b) 5,3 c) 4,3 6) 8,7 + 1,2 a) 9,9 b) 8,9 c) 6,5 7) 12,5 + 6,2 a) 7,18 b) 18,7 c) 8,3 8) 24,3 + 6,2 a) 18,1 b) 29,5 c) 30,5 9) 12,6 + 0,4 a) 12,2 b) 13 c) 18,6 10) 8,2 + 2,8 a) 11 b) 10 c) 10,10
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calcolo mentale decimali 1
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Tommi94
Primaria
Matematica
Numeri e operazioni
Frazioni e decimali
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