Jack broke apart 5×216 as (5×200)+(5×16) to multiply mentally. what strategy did jack use?

Pepe is going to spin the following spinner 800 times. the spinner is divided into equal sections. a. exactly 160 timesb. clost to 160 times but probably not exactly 160 timesc. exactly 640 timesd. close to 640 times but not probably not exactly 640 times. me

On a architect's drawing of a house, 1 inche representa 1.5

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )