Complete each exercise.
19. 567 x 10 =
21.912 x 100

Yuri, sam and dani had the same math homework last night, but none of them finished it. yuri finished 3/8 of her homework, sam finished 4/6 of her homework and dani finished 1/2. who finished the most math homework? who finished the least amount?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

If rt is greater than ba, which statement must be true ?