6.AT.2 Lesson 3-8-part2 Apply Day · Set B
MASTERY CHECK
☐ Exceeds☐ Meets Target☐ Needs Practice

3.8 · Part II

Second Practice Form · Independent Application and Spiral Review

Unit Rate Problem Solving · Unit Rate

Interactive Workbench & Models →
Name: Date: Period: Learning Goal:
■ ADVANCED CONCEPT ANCHOR: 3.8 · Part II
1Solving Problems with Unit Rates
2The Structural Procedure
  1. Find the unit rate by dividing total cost by quantity
  2. Compare unit rates to determine the best deal
  3. Multiply unit rate by desired quantity to calculate total cost
3Mathematical Word Bank
  • Unit Rate Problem Solving (Resolución de problemas con tasas unitarias) — Find an amount per 1 unit and use it to compare choices or solve a problem.
  • Unit Rate (Tasa unitaria) — A rate for just 1 of something, like cost for 1 item.
  • Better Buy (Mejor compra) — The choice that costs less for each item.
  • Comparison (Comparación) — Looking at two or more amounts to see how they are related.
  • Per Unit (Por unidad) — For each single item.
  • Rate (Tasa) — A ratio comparing two amounts with different units, like miles per hour.
4Watch out
  • A common mistake in Solve Problems with Unit Rates is comparing the total prices instead of the cost per item — the deal with the smaller total can still cost more per unit. Always reduce each option to its unit rate before you decide, then pick the lower one.
  1. 1 MULTIPLE CHOICE

    (Lesson 4.4) What is 20% of 150?

    1. A30
    2. B20
    3. C35
    4. D75
    0%50%100%
    Work
  2. 2 MULTIPLE CHOICE

    (Lesson 4.4) What is 50% of 84?

    1. A42
    2. B50
    3. C34
    4. D168
    0%50%100%
    Work
  3. 3 MULTIPLE CHOICE

    The delivery van brings arcade supplies 150 miles in 3 hours. What is the unit rate in miles per hour?

    1. A50 miles per hour
    2. B45 miles per hour
    3. C153 miles per hour
    4. D30 miles per hour
    per 1
  4. 4 MULTIPLE CHOICE

    The ticket counter sells redemption tickets two ways: 8 tickets for $2.00 or 15 tickets for $3.00. Which costs less per ticket?

    1. A15 tickets for $3.00 — $0.20 each
    2. B8 tickets for $2.00 — $0.25 each
    3. CThey cost the same per ticket
    4. DCannot determine
    ✏️ Workspace & Solution Steps
  5. 5 MULTIPLE CHOICE

    Which is the better buy: 6 bouncy balls for $4.50 or 10 bouncy balls for $8.00?

    1. A6 for $4.50 — $0.75 each
    2. B10 for $8.00 — $0.80 each
    3. CThey cost the same per ball
    4. DNot enough information
    ✏️ Workspace & Solution Steps
  6. 6 MULTIPLE CHOICE

    A faucet drips 15 ounces of water in 5 minutes. What is the unit rate?

    1. A3 ounces per minute
    2. B5 ounces per minute
    3. C15 ounces per minute
    4. D0.33 ounces per minute
    per 1
  7. 7 MULTIPLE CHOICE

    A printer prints 42 pages in 6 minutes. How many pages does it print in 15 minutes at the same rate?

    1. A105 pages
    2. B90 pages
    3. C70 pages
    4. D120 pages
    ✏️ Workspace & Solution Steps
📐 CER MATHEMATICAL PROOF MATRIX (CER 2.0) SMP.3 / Proof & Justification

Writing Task: Justify why your mathematical solution is accurate and complete.

C Claim
State your direct mathematical answer/claim with units.
E Evidence
Cite exact numbers, calculations, dimensions, or graph data.
R Reasoning
Explain the mathematical theorem, property, or definition connecting evidence to claim.
Student Mastery Self-Assessment:
1 · Need More Support
2 · Getting Closer
3 · Got It / Solid
4 · Master / Can Teach It