A window through the walls of our classroom. This is an interactive learning ecology for students and parents in my Consumer Math 20S class. This ongoing dialogue is as rich as YOU make it. Visit often and post your comments freely.
Today in math we did our usual mental math test. Mr. kuropatwa taught us an easier way to multiply. For example if we needed to multiply $6.25 x 4 instead of doing it the more difficult way and multiplying it by 4 or multiplying each digit.. we could take $6.25 and times it by 2 and that gives you $12.50 and then you take $12.50 and times it by another 2 then you get $25.00. Another example is .. $14.25 x 4 $14.25 x 2 = $28.50 $28.50 x 2 =$57.00 The next scribe will be BantangX.
To see a larger image of the slides go here. When you get there you'll see a button in the bottom right-hand corner that says [full]. Click it and the slides will display in full screen mode.
To see a larger image of the slides go here. When you get there you'll see a button in the bottom right-hand corner that says [full]. Click it and the slides will display in full screen mode.
Today in class, we started off with mental math, like we usually do. After correcting eachothers papers, Mr. Kuropatwa taught us a new trick: Multiplying "Teens". For example: 17 x 15. You take any of the two numbers and add it with the ones digit of the other number, like 17 and 5. You then take the sum of the two numbers, which is 22, and mulitply it by 10. You get 220. You take the ones digit of both 17 and 15 and multiply it together to get 35. After that, you add 220 and 35 to get your final answer, which is 255. We also did some questions on the smartboard and you should always show your work step by step.
To see a larger image of the slides go here. When you get there you'll see a button in the bottom right-hand corner that says [full]. Click it and the slides will display in full screen mode.
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