Cálculo mental 5

Answer explanation

Estratégia a usar.

4 x 25 =

= 100

Answer explanation

Estratégia a usar.

2 x 50 =

= 100

Answer explanation

Estratégia a usar.

5 x 18 x 2 =

= 5 x 2 x 18 =

= 10 x 18 =

= 180

Answer explanation

Estratégia a usar.

5 x 45 x 2 =

= 5 x 2 x 45 =

= 10 x 45 =

= 450

Answer explanation

Estratégia a usar.

50 x 2 x 70 =

= 50 x 2 x 70 =

= 100 x 70 =

= 7000

Answer explanation

Estratégia a usar.

50 x 82 x 2 =

= 50 x 2 x 82 =

= 100 x 82 =

= 8200

Answer explanation

Estratégia a usar.

25 x 78 x 4 =

= 25 x 4 x 78 =

= 100 x 78 =

= 7800

Answer explanation

Estratégia a usar.

30 x 4 x 25 =

= 4 x 25 x 30 =

= 100 x 30 =

= 3000