Grade 6 Mathematics · Unit 2: Understanding the World Around Us Through StatisticsStandard 6.NOS.3

Lesson 2.112.11 · Part II

Apply Day · Set BSecond form · new problems, same idea

Mastery check☐ Exceeds☐ Meets target☐ Needs practice
Name Date Period

Learning target I can add and subtract decimals by lining up the place values and the decimal points.

Remember2.11 · Part II

Adding & Subtracting Decimals

  1. Line up the decimal points vertically by place value
  2. Insert placeholder zeros so each number has the same number of decimal digits
  3. Add or subtract right-to-left, regrouping as needed, and drop decimal straight down

Words: Decimal (Decimal)Place value (Valor posicional)Tenths (Décimas)Hundredths (Centésimas)Annex zeros (Agregar ceros)

Part 1Understand the ideamodels and meaning
  1. 1Complete each step, then write the final answer.

    A scale reads 3.2 kg. A box that weighs 1.875 kg is taken off. What does the scale read now?

    Show your work
    Final answer:
Part 2Practice the skillshow every step
  1. 2Complete each step, then write the final answer.

    Find 4.3 + 2.5.

    Show your work
    Final answer:
  2. 3Complete each step, then write the final answer.

    Find 52.8 + 17.45.

    Show your work
    Final answer:
  3. 4Circle the letter of the best answer. Show how you know.

    What is 14.6 + 3.85?

    1. A17.45
    2. B18.35
    3. C18.45
    4. D18.55
    Line up the place values
  4. 5Circle the letter of the best answer. Show how you know.

    What is 9.05 + 4.7?

    1. A13.12
    2. B13.57
    3. C13.75
    4. D14.75
    Line up the place values
Part 3Apply itreal-world problems
  1. 6Complete each step, then write the final answer.

    Find 45 − 18.72.

    Show your work
    Final answer:
  2. 7Complete each step, then write the final answer.

    A pencil costs $0.65. A pen costs $1.40. How much more does the pen cost?

    Show your work
    Final answer:
  3. 8Complete each step, then write the final answer.

    Find 100 − 0.07 − 45.6.

    Show your work
    Final answer:
  4. 9Circle the letter of the best answer. Show how you know.

    What is 20.3 − 7.48?

    1. A12.18
    2. B12.82
    3. C12.92
    4. D13.82
    Line up the place values
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