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24 May, 17:33

First question.

A student say that the solution of 375 = x minus 28 is 327. Explain the students error and find the correct answer.

2nd question.

Write the next three terms and write a rule to describe the number pattern.

0.57, 0.66, 0.75, 0.84

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Answers (1)
  1. 24 May, 17:49
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    1) Correct answer:

    375 = x - 28

    x = 375 + 28

    = 403

    The student had subtracted 48 from 375 to get 327 instead of adding 28 to 375 to get 403.

    2) 0.66 - 0.57 = 0.09

    0.75 - 0.66 = 0.09

    0.84 - 0.75 = 0.09

    So the successive number must be + 0.09 of the previous number

    0.84 + 0.09 = 0.93

    0.93 + 0.09 = 1.02

    1.02 + 0.09 = 1.11
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