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Calculo mental
Sumas 2 cifras + 1 cifra 002
Colegio Marista San José4ºC – Curso 2008-2009
Luis Gutiérrez Martín - lgm@maristasleon.com
37+4=
22+9=
86+5=
19+3=
89+2=
45+7=
24+7=
47+4=
66+5=
79+4=
49+3=
56+7=
45+8=
88+3=
38+6=
69+4=
46+5=
58+3=
39+3=
33+9=
27+6=
63+7=
85+8=
29+2=
67+6=
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