4.1 · Part II
Supported Application · Guided Entry to Today's Problem
Understand Percent · Percent
- Percent means 'per hundred' (% = /100)
- On a 100-grid, each square represents 1% = 0.01 = 1/100
- Fraction to Percent: Scale fraction to a denominator of 100
- Understand Percent (Comprender el porcentaje) — A percent is a ratio that compares a number to 100, so every percent answers the question “how many out of 100?”
- Percent (Porcentaje) — A ratio that compares a number to 100. The word means “per hundred,” and the symbol is %.
- Per hundred (Por cada cien) — The meaning hidden inside the word percent: for every group of 100. It is why every percent can be written as a fraction over 100.
- Decimal grid (Cuadrícula decimal) — A 10-by-10 grid of 100 squares. Shading squares shows a percent directly, one square per percent.
- Part-to-whole (Parte a todo) — A comparison of one part against the whole amount. In a percent, the whole is always 100%.
- Greater than 100% (Mayor que 100 %) — More than one whole. A percent above 100 means the amount is larger than the thing it is being compared to.
- A common mistake with percent is scaling only one term of the ratio: reading 7 out of 10 as 7%. A percent compares to 100, so BOTH terms must be multiplied by the same factor — 10 × 10 = 100, so 7 × 10 = 70, giving 70%. Reading it as 7% describes seats that are nearly empty when they are nearly full. A second mistake is treating a percent as an amount: 150% of a 200-point goal is 1.5 × 200 = 300 points, not 150 points.
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1 DRAG SORT
Sort each percent by how it compares to one whole.
- 45%
- 150%
- 99%
- 200%
- 0.5%
- 101%
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2 MATCHING GAME
Match each comparison to its percent.
- 4 out of 10
- 23 out of 100
- 1.5 times the whole
- the whole itself
- A40%
- B23%
- C150%
- D100%
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3 MULTIPLE CHOICE
Which percent means MORE than one whole?
- A120%
- B100%
- C80%
- D0.8%
✏️ Workspace & Solution Steps
Writing Task: Justify why your mathematical solution is accurate and complete.
4.1 · Part II
On-Level Application · Standard Rigor
Understand Percent · Percent
- Percent means 'per hundred' (% = /100)
- On a 100-grid, each square represents 1% = 0.01 = 1/100
- Fraction to Percent: Scale fraction to a denominator of 100
- Understand Percent (Comprender el porcentaje) — A percent is a ratio that compares a number to 100, so every percent answers the question “how many out of 100?”
- Percent (Porcentaje) — A ratio that compares a number to 100. The word means “per hundred,” and the symbol is %.
- Per hundred (Por cada cien) — The meaning hidden inside the word percent: for every group of 100. It is why every percent can be written as a fraction over 100.
- Decimal grid (Cuadrícula decimal) — A 10-by-10 grid of 100 squares. Shading squares shows a percent directly, one square per percent.
- Part-to-whole (Parte a todo) — A comparison of one part against the whole amount. In a percent, the whole is always 100%.
- Greater than 100% (Mayor que 100 %) — More than one whole. A percent above 100 means the amount is larger than the thing it is being compared to.
- A common mistake with percent is scaling only one term of the ratio: reading 7 out of 10 as 7%. A percent compares to 100, so BOTH terms must be multiplied by the same factor — 10 × 10 = 100, so 7 × 10 = 70, giving 70%. Reading it as 7% describes seats that are nearly empty when they are nearly full. A second mistake is treating a percent as an amount: 150% of a 200-point goal is 1.5 × 200 = 300 points, not 150 points.
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1 MULTIPLE CHOICE
The orange kitten weighs 1.5 times as much as the gray kitten. What percent of the gray kitten's weight is that?
- A150%
- B15%
- C50%
- D1.5%
Work -
2 MULTIPLE CHOICE
What percent is 9 out of 100?
- A9%
- B90%
- C0.9%
- D19%
✏️ Workspace & Solution Steps -
3 MULTIPLE CHOICE
Which is exactly one whole?
- A100%
- B50%
- C10%
- D1%
✏️ Workspace & Solution Steps
Writing Task: Justify why your mathematical solution is accurate and complete.
4.1 · Part II
Extension & Non-Routine Application
Understand Percent · Percent
- Percent means 'per hundred' (% = /100)
- On a 100-grid, each square represents 1% = 0.01 = 1/100
- Fraction to Percent: Scale fraction to a denominator of 100
- Understand Percent (Comprender el porcentaje) — A percent is a ratio that compares a number to 100, so every percent answers the question “how many out of 100?”
- Percent (Porcentaje) — A ratio that compares a number to 100. The word means “per hundred,” and the symbol is %.
- Per hundred (Por cada cien) — The meaning hidden inside the word percent: for every group of 100. It is why every percent can be written as a fraction over 100.
- Decimal grid (Cuadrícula decimal) — A 10-by-10 grid of 100 squares. Shading squares shows a percent directly, one square per percent.
- Part-to-whole (Parte a todo) — A comparison of one part against the whole amount. In a percent, the whole is always 100%.
- Greater than 100% (Mayor que 100 %) — More than one whole. A percent above 100 means the amount is larger than the thing it is being compared to.
- A common mistake with percent is scaling only one term of the ratio: reading 7 out of 10 as 7%. A percent compares to 100, so BOTH terms must be multiplied by the same factor — 10 × 10 = 100, so 7 × 10 = 70, giving 70%. Reading it as 7% describes seats that are nearly empty when they are nearly full. A second mistake is treating a percent as an amount: 150% of a 200-point goal is 1.5 × 200 = 300 points, not 150 points.
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1 MULTIPLE CHOICE
A robotics club had a fundraising goal of $500. By Friday, they collected $750. What percent of their goal did they achieve?
- A150%
- B75%
- C125%
- D50%
Work
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2 OPEN RESPONSE
A car dealership sold 50 cars last month: 20 sedans, 15 SUVs, 10 trucks, and 5 vans. The owner will order 100 cars for next month and wants the order to match last month's sales pattern. Write each type as a percent, then say how many of each to order — and explain why percents make this easier than the raw counts.
✏️ Mathematical Justification & Response
Writing Task: Justify why your mathematical solution is accurate and complete.