Haile's Headlines
November 10, 2017
Past Week...
For example, 5 1/4 - 2 3/4 = ____. To solve this 5 1/4 needs to be renamed as 4 4/4 + 1/4 which equals 4 5/4 - 2 3/4 = 2 2/4 = 2 1/2. In this problem, students must rename (borrow 1 from the whole number and rename the whole number 1 as a fractional one (1 = 4/4) with the denominator as the determining source) the mixed number.
Another example is 7 1/2 - 3 4/5 = ____. First, students must find a common denominator for the unlike denominators. 7 1/2 x 5/5 = 7 5/10 and 3 4/5 x 2/2 = 3 8/10.
Then 7 5/10 - 3 8/10 is the new problem. The fraction 8/10 can not be subtracted from 5/10, so 7 5/10 has to be renamed - borrow 1 from the whole number and represent that one as a fraction. 7 5/10 becomes 6 10/10 + 5/10 which equals 6 15/10. Now students can subtract --- 6 15/10 - 3 8/10 = 3 7/10. As you can see there a a lot of steps to renaming fractions. Please practice this.
Here is a link to practice.
https://www.wisc-online.com/learn/abe-ell/math/abm701/subtracting-mixed-number-fractions-with-borro
If this link doesn't work here, copy and paste it into the internet browser or go to my eClass page and the link will be under Unit 4 Fractions named Subtracting Fractions and Mixed Numbers with Renaming at the bottom of that section.
Students also have 6 problems that were assigned on Thursday, Nov. 9th that will be due on Monday, Nov. 13th. We don't have math class on Friday, Nov. 10th because of the Veterans' Day Assembly.
Upcoming Week...
Please let me know if you have any questions or concerns by email and/or phone. Have a wonderful weekend.