How do you regroup 64?

What is the answers to 5Th grade study link 5.7? Box of wood that weighs 1 pound I put something in it but now your box weighs half a pound How come What did you put in the box? When you multiply the numerator and denominator by the same factor? How do you determine the variation of a Model 241 serial 3553? Is goldmine a compound word? What is 12 02 1991 in roman numerals? How do you solve the problem 'What percent of 4000 is 100'? What are the numbers divisible by 140? Intraosseous needles must be replaced within how many hours of insertion? What is the only number not to have a reciprocal? Where can you find pictures of elephants? What times itself equals 1014? What is the difference between collinear and non collinear point? What is the prime facterlization for 310? Which shows the equation of 5p equals 35 in words? What is 2.18 as an improper fraction? How many minutes in a day and how many hours in a day? What is 25.000? Please help I am very confused on how to solve an algebra problem how do you find the area and length from a polynomial expression 2xsquared plus 5x plus 2 two x squared plus five x plus 2? If a room measures 14'4 x 10' how many square feet is it?