Mathematics, 26.10.2020 20:40 laneycasey5375
Mina asked four friends to explain how each one solved the expression 176.3 15.75 . Here are their explanations: Ivy’s explanation: I lined up the numbers to subtract. 176.3 15.75 18.8 Hannah’s explanation: I lined up the two decimals according to place value. I put a 0 in the hundredths place to make it easier for me to subtract. 176.30 15.75 161.45 Jose’s explanation: I lined up the two decimals according to place value. 176.3 15.75 161.45 An’s explanation: I counted up from 15.75 to 176.3 to find the difference. I underlined each number I added on each line. 15.75 0.25 16 16 4 20 20 150 170 170 6 176 176 0.3 176.3 I rearranged the underlined numbers to make them easier to add: 150 6 4 3 0.25 163.25 . (d) Explain each student’s mistake. (e) Solve the problem correctly. Show your work.
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Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form: science fiction books to history books 2. write the ratios as fractions: dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.
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Mina asked four friends to explain how each one solved the expression 176.3 15.75 . Here are their...
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