Cálculos mentalesOnline version
by Karina Casse
1
1290 + 1205 =
2
2804 + 1262 + 990 =
3
1950+200-500=
4
4630-1000=
5
|
|
Cálculos mentalesOnline versionby Karina Casse
1
1290 + 1205 =
2
2804 + 1262 + 990 =
3
1950+200-500=
4
4630-1000=
5
2500+1200-50= |