0 of 6 Questions completed
You have already completed the activity before. Hence you can not start it again.
Activity is loading…
You must sign in or sign up to start the activity.
You must first complete the following:
0 of 6 Questions answered correctly
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Instructions. In this activity, we are going to subtract fractions in which one denominator is not a multiple of the other. That is to say, their LCM is not one of the numbers.
Step 1: Check the Subtraction box at the top left to begin.
Step 2: Change the red fraction to 3/4, and the blue fraction to 1/3.
Step 3: Pull the black slider to the top and observe what portion of the red circle overlaps.
Step 3: To find the overlapping portion, check the Lowest Common Denominator box. The circle is now divided into equal sectors.
Step 4: Before checking the answer, count the number of overlapping parts.
Step 5: Click on the reset button at the top right, and check the Subtraction box again.
Step 7: Change the red fraction to 5/6 and the blue fraction to 1/4, and repeat the process.
3/5 – 1/3 =
2/3 – 1/5 =
5/6 – 3/4 =
8/9 – 1/2 =
4/7 – 1/3 =