I have 3 rolls of ribbon. each roll is 3 yards long. I cut off 1/2 yards from each roll. how much ribbon did I cut off in all.
3 * (1/2) = ?
To find out how much ribbon you cut off in total, you need to calculate the amount of ribbon cut from each roll and then add them together.
Since you have 3 rolls of ribbon, and each roll is 3 yards long, the total length of ribbon you have is 3 rolls multiplied by 3 yards, which equals 9 yards.
Next, you cut off 1/2 yard from each roll. To find out how much ribbon you cut off in each roll, you multiply the number of rolls (3) by 1/2 yard, which gives you 3/2 yards.
To find the total amount of ribbon cut off, you add the amounts cut off from each roll together: 3/2 + 3/2 + 3/2 = 9/2 yards.
Therefore, you cut off a total of 9/2 yards, or 4.5 yards, of ribbon in all.