Respuesta :

Answer:

2800

Step-by-step explanation:

round 278 to 280

then round 11 to 10

then times the 2 answers together

Answer:

≈ 3080

Step-by-step explanation:

278 x 11 =

≈ 280 x 10 + 280

≈ 2800 + 280

≈ 3080