This blog is the online extension of our intermediate classrooms. Our goal is to enhance and document our learning experience throughout the school year, and share this journey with teachers, parents and students. We welcome your constructive feedback, and we look forward to learning with you!
Find the latest POTW below. ONLY 3 students answered the previous POTW (and they all obtained the correct answer of 102km/hr). If the POTWs are too difficult please let me know!
For this question, I put each number side by side to see the change from the previous number to the next. Another strategy I used was writing the previous number over the next number to visually see the change. In the end, I found out that 36 lights went off and 22 went on.
Actually, there would be 7 total changes in the tens coloumn digits, and 60 total changes in the ones coloumn digits. Therefore, there would be a total of 67 LED changes when counting down from 20 to 1.
For this question, I put each number side by side to see the change from the previous number to the next. Another strategy I used was writing the previous number over the next number to visually see the change. In the end, I found out that 36 lights went off and 22 went on.
ReplyDeleteI imagined the numbes on top of each other and created a number line. The final answer is 36 lights turned off and 22 on.
ReplyDeleteI would just imagine the lights in my mind. I then counted how many turned on and off. In the end, I got 36 lights that went off and 22 that went on.
ReplyDeletei counted the lights on paper and in the end got 36 lights that went off and 22 that turned on
ReplyDeleteActually, there would be 7 total changes in the tens coloumn digits, and 60 total changes in the ones coloumn digits. Therefore, there would be a total of 67 LED changes when counting down from 20 to 1.
ReplyDelete