I added two decimal numbers together to make exactly 4. What might the two numbers be?
Challenge: What might the numbers be if you added three decimal numbers together to make exactly 4?
This led to some review from grade 5 as well as great new learning. We know that:
- when adding decimals we need to make sure the decimal places are lined up. We can add a zero if need be to fill in a place after the decimal if the numbers do not go to the same place (one is to the tenths and one is to the hundredths).
We discovered today as we were finding equations where the sum is 4 (or any whole number), that:
- when adding numbers to the tenths place, the digits in the tenths place add up to 10
- when adding numbers to the hundredths place, the digits after the decimal add up to 100
- when adding numbers to the thousandths place, the digits after the decimal add up to 1000
- no matter how many zeroes you add after a decimal, it doesn't change the number
Students shared some of their other strategies for finding numbers to reach the sum. One student recorded one number such as 2.453. He started at the ones and knew the sum was 4, and knew that he would be carrying over a one from the other columns, so knew that the number he recorded for the ones needed to add up to 3. For the tenths and hundredths, he knew they needed to add to 9 since one would be carried from the columns to the right. The thousandths was the place that needed to add up to 10. He was able to determine the number to add would be 1.547.
Another student did a similar strategy, but started at the ones. They knew that the ones needed to add up to 10 and when they carried the one over, they added the one to the number they had and then figured out how many more they would need to equal 10. The final step was to figure out how many they needed to get the whole number part of the sum.
All students had a chance to practice the two strategies after the sharing and were successful! Ask your child to show you tonight.
We met as a large grade 6 group to begin Social Action. We read the story One Hen. It is set in Ghana and tells how a loan to buy one hen made a difference for a boy and his family and eventually his town and his country.
Our day finished learning about what tree rings can tell us. Ms. Steeves gave us a sheet with 5 things tree rings can tell us and we tried out our Sketchnoting skills in our notes. We think it was pretty successful as students found that their notes were more interesting than just writing notes and they felt it would be easier to remember and find information quickly if they needed to. They liked combining words and visuals. It is great to see the different ways that students Sketchnoted.
Reminders:
- Return Friday Journal
- School picture orders due Oct. 11. Orders can be made online or brought to the school
- No school for students Friday, Oct. 11 (PD Day) or Monday, Oct. 14 (Thanksgiving)
- Return ADmazing coupon orders
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