Grade 6 Mathematics · Unit 4: Understand and Use PercentagesStandard 6.AT.4

Lesson 4.34.3 Small Group · Group 1

Group 1 · Set BSecond form · new problems, same idea

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Learning target With my small group, I can estimate the percent of a number using benchmark percents, rounding, and compatible numbers — one step at a time, with support.

Remember4.3 Small Group · Group 1

To estimate a percent, round to a benchmark percent like 10%, 25% or 50%, and round the number to one that is easy to use. To estimate a percent of a number, change the numbers to friendly numbers that are easy to use.

Words: estimate (estimación)benchmark percent (porcentaje de referencia)compatible numbers (números compatibles)double number line (recta numérica doble)the whole (el todo)

  1. 1Complete each step, then write the final answer.
    Percent (%)Trees________________

    A farm has 412 trees. 24% of the trees are apple trees. Estimate the number of apple trees.

    Show your work

    Hint 24% is close to 25%, and 412 is close to 400. Find one quarter of 400.

    Final answer:
  2. 2Complete each step, then write the final answer.
    Percent (%)Number________________

    Estimate 10.7% of 893.

    Show your work

    Hint Round 10.7% to 10%. Round 893 to a friendly number.

    Final answer:
  3. 3Complete each step, then write the final answer.
    Percent (%)Price ($)________________

    A bike costs $159. It is on sale for 24% off. About how much money do you save?

    Show your work

    Hint 24% is close to 25%, which is one quarter. Round $159 to a number easy to divide by 4.

    Final answer:
  4. 4Circle the letter of the best answer. Show how you know.
    Storage (GB)Percent (%)________________________
    8 GB is 100%.

    A phone has 8 GB of storage. It has used 5 GB. About what percent of the storage is used?

    1. AAbout 60%
    2. BAbout 50%
    3. CAbout 5%
    4. DAbout 80%

    Hint 8 GB is 100%. Divide both by 8 to find 1 GB. Then multiply both by 5.

    Show your work

Explain your thinkingTo estimate 26% of 323, Kim used 25% of 320. Jo used 25% of 300. Are both estimates good? Explain.

Sentence starter I round 26% to ___ because ___. · Both estimates are close because ___.

How did it go? ☐ 4 · I can teach it☐ 3 · I've got it☐ 2 · I need a hint☐ 1 · I need help