Estimating Products

Monday, October 7, 2013
Students learned how to use rounding to estimate products.
A few things students must remember:
-You must round first before you do any calculations.
-You must round the number that is not the single digit number.
-You must round to the greatest place value.

EX: 7 x 234 = ---> 234 rounded to the nearest hundred is 200 so we re-write the problem as 7 x 200 = ---> then we multiply 7 times 2 which is 14 then add 2 zeros. The estimated product is 1,400.

Here is a helpful video (full screen to make bigger):

 

 

Reminders: Tomorrow, Thursday October 10th, is Curriculum Night for K-5. There will be different sessions if you plan on attending, here is an overview and schedule of the sessions:

Room 148: Third, Fourth, Fifth Grade Mathematics Curriculum. Presented by Ms. Kominczak, Mrs. Cao, and Mrs. Gayer. Discussion of math curriculum and STAAR Math testing. View EnVision/Pearson website and receive log-in information. Discussion of ways parents can help students at home (STAAR practice, etc.).

Session Times: 5:10 pm; 5:30 pm; 5:50 pm; 6:10 pm