Question

Tính bằng 2 cách : 5x 1250 - 50

Answer 1

C1 : 

5 x 1250 - 50

= 6250 - 50

= 6200

C2:

5 x 1250 - 50

= 5 x ( 1250 - 10 )

= 5 x 1240

= 6200

Answer 2

\(6250-50=6200\)

\(5.\left(1250-50\right)+50.5-50=6200\)

Answer 3

Cách 1 :

\(5\times1250-50\)

\(=6250-50\)

\(=6200\)

Cách 2 :

\(5\times1250-50\)

\(=5\times1250-5\times10\)

\(=5\times\left(1250-10\right)\)

\(=5\times1240\)

\(=6200\)

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