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3 subtract

LIKE DUHHHHHHHHH

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hi companeros

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Today I Learned about decimals and about the things like how to add decimals and subtract decimals. Also to Multiply decimals  and divide decimals too.

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I don't get the answer when they say, To subtract 143 − 75 using mental math, Lisa subtracted 143 − 80 and got 63. What should she do next?

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Math Strategies

What problems did you find simple, and what problems did you find complicated? Were there confusing words, concepts or unknown processes? What strategies did you use to get the right answer? What strategies did your classmates share that you thought could help you with complicated problems in the future?

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i got number one wronge cause i thought it was 2.70 on 4.5 x 6and it was 27.

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The problem was that It has to compare

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I got number 20 wrong because I thought it would kept going on the number. I got the answer 0.75 but it was not the correct answer. So then I thought the other number was too big. And then so I got the other answer and it was 0.65 because 6 second would be a lot of time and the other is lesser so is the 0.90 it is bigger than any number. So I found out that this was the correct answer.

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I was struggling with the same thing as Phillip.

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The atomic weight of helium is 4.003. Which of the following is equal to 4.003?

My first answer to this question was 43/1000,  now that I realized I got the answer wrong I looked over it and I realized that the right answer was A 4 3/100 because the 4 in front of the decimal point is whole so it equals 4 and then whatever is behind the decimal point and in which place it is like in the thousandths place.

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A problem was that when you had to compare

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One problem i found hard was the one that said the 3,345. I didn't know it but until later i found the answer 3,000 300.

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https://docs.google.com/document/d/1RCPTa4FDV3bJ3P1BQCjvfVf9aHis_0fuIAV-lgb0gqs/edit

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One problem I found hard was the one that said which number is between (number) and (number)? That is all since the other ones were easy.