6.AT.4 Lesson 4-4-part2 Apply Day · Set B
MASTERY CHECK
☐ Exceeds☐ Meets Target☐ Needs Practice

4.4 · Part II

Second Practice Form · Independent Application and Spiral Review

Percent of a Number · Percent

Interactive Workbench & Models →
Name: Date: Period: Learning Goal:
■ ADVANCED CONCEPT ANCHOR: 4.4 · Part II
1Finding the Percent of a Number
2The Structural Procedure
  1. Identify the percent and the whole (base amount)
  2. Convert the percent to a decimal or simplified fraction
  3. Multiply the decimal/fraction by the whole to calculate the part
3Mathematical Word Bank
  • Percent of a Number (Porcentaje de un número) — A part of a number found by multiplying the number by the percent written as a decimal.
  • Percent (Porcentaje) — A way to compare a number to 100, shown with the % sign.
  • Base (Base) — The whole amount you start with — the number right after the word “of.”
  • Part (Parte) — How much of the base (the whole) you get. It is your answer.
  • Equation (Ecuación) — A number sentence with an equal sign. The percent one is: part = percent × base.
  • Discount (Descuento) — Money taken off the first price to make it cheaper.
4Watch out
  • A common mistake in Find the Percent of a Number is multiplying by the percent number itself instead of its decimal form — for example, finding 30% of 80 by computing 30 × 80 = 2,400 instead of 0.30 × 80 = 24. Always divide the percent by 100 to get the decimal, then multiply that decimal by the base.
  1. 1 MULTIPLE CHOICE

    Your bowling score was 60 points. The bonus round adds 15% more points. How many bonus points is that?

    1. A9
    2. B15
    3. C45
    4. D75
    0%50%100%
    Work
  2. 2 MULTIPLE CHOICE

    A snack at the arcade costs $40. The sales tax is 5%. How many dollars is the tax?

    1. A$2
    2. B$5
    3. C$8
    4. D$20
    0%50%100%
    Work
  3. 3 MULTIPLE CHOICE

    What is 20% of 150?

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

    What is 50% of 84?

    1. A42
    2. B50
    3. C34
    4. D168
    0%50%100%
    Work
  5. 5 MULTIPLE CHOICE

    What is 10% of 320?

    1. A32
    2. B3.2
    3. C320
    4. D64
    0%50%100%
    Work
📐 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