Types of gravel include: 1  Bank gravel: naturally deposited gravel intermixed with sand or clay found in and next to rivers and streams. 2  Bench gravel: a bed of gravel located on the side of a valley above the present stream bottom, indicating the former location of the stream bed when it was at a higher level.
1 is the sixth part of 6. 2 is two sixths, and also the third part, of 6. 3 is three sixths, and also half of 6. 4 is four sixths, and also two thirds, of 6. is the sixth part of 6. 2 is two sixths, and also the third part, of 6. 3 is three sixths, and also half of 6. 4 is four sixths, and also two thirds, of 6.
Now add the two proper fractions. Since they have the same denominator, we don't need to do anything except add their numerators to get this: 7/9 + 4/9 = (7 + 4)/9 = 11/9 = (9/9) + (2/9) = 1 2/9. Now add the last result to the sum of the two whole numbers we added earlier: 12 + 1 2/9 = (12 + 1) + 2/9 = 13 2/9.