Write for equivalent expressions for 20-10

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|