We first startegy we did was clocks. We found out that the magic number for clocks was 60 minutes. After that, we figured out the numbers that would divide evenly into 60. They were 2, 3, 4, 5, 6, 10 , 12, 15, 20, 30, and 60. We did an exmaple question and this is how I solved it.
1/3 is 20 mintues on a clock. 1/12 is 5 minutes on a clock, but since it's 5/12 we just have to multiply 5 minutes, 5 times. This will get us 25 minutes. Add it together and get 45 minutes over 60 minutes. You could reduce it to 9/12. Reduce it one more time and get the final answer, 3/4
The second startegy we did was money. We found out the magic number for money and it was 100. After that , we figured out that 2, 4, 5, 10, 20, 25, 50 and 100 were the numbers that divide into 100 evenly. We did an example qeustion and this is how I
solved it.
The first number 3/10 was easy to solve , because the denominator, 10, meant that it was in dimes. SO all we had to do was multiply 3 by 10 and it equaled 30 cents over 100. The second number was easy to solve, because the denominator, 20, meant that it was in nickels. So all we had to do was multiply 9 by 5 and it equaled 45 cents over 100. Add that together and get 75 cents over 100. You might see it kind of looks like three quarters. So the final answer is 3/4.
The last strategy we did was double number lines. We found out that any number can go into it. We did an example question and this is how i did it.
Since 5/8 equals 55/88, by just multiplying 5 and 8 with 11.
3/11 equals 24/88, by just multiplying 3 and 11 by 8.
the number line was up to 88 since that was the denominator. we first did 3/11 (24/88) and added 5/8 ( 55/88) which equalled to 79/88.
This ends todays math class! Remember to finish your math homework.
Clock:
1/2 + 3/10
4/5 + 1/12
1/3 + 11/20
Money:
5/20 + 1/10
2/4 + 10/25
17/50 + 2/5
Double Number Line:
6/13 + 2/5
1/4 + 6/8
12/19 + 1/3
