Question

the mass of a box is 2kg correct to nearest kg.write down the lower bound for the mass of the box

Answer 1

1.49kg would round down to 1kg, 1.5kg would round up to 2kg if I am not mistaken, however it is right between 1kg and 2kg :P.

Anything lower than 1.5kg would round down to 1kg. anything higher would round up to 2kg.