You are measuring a board so you can cut it. You need to cut the wood from 1 1/4 inches to 1/2 inch. How long is the piece of wood you are going to cut?

Answer 1

To determine the length of the wood you need to cut, you need to find the difference between the original measurement of 1 1/4 inches and the final measurement of 1/2 inch.

To do this, subtract the final measurement from the original measurement:

1 1/4 inches - 1/2 inch

To subtract fractions, you need a common denominator. In this case, the common denominator is 4.

Convert 1 1/4 to a fraction with a denominator of 4:

1 1/4 = (4/4) + 1/4 = 5/4

Now you can subtract the fractions:

5/4 - 1/2

To subtract fractions, the denominators must be the same, so multiply the numerator and denominator of 1/2 by 2:

5/4 - (1/2) * (2/2) = 5/4 - 2/4 = 3/4

The length of the piece of wood you are going to cut is 3/4 inch.