4.2 · Part II
Supported Application · Guided Entry to Today's Problem
Fractions, Decimals, and Percents · Percent
- Percent to Decimal: Divide by 100 (move decimal point 2 places left)
- Decimal to Percent: Multiply by 100 (move decimal point 2 places right)
- Fraction to Percent: Divide numerator by denominator, then convert decimal to percent
- Fractions, Decimals, and Percents (Fracciones, decimales y porcentajes) — Three equivalent ways to name the same part of a whole.
- Percent (Porcentaje) — A way to compare a number to 100, shown with the % sign.
- Decimal (Decimal) — A number with a dot, like 0.5, that shows a part less than one.
- Equivalent (Equivalente) — Having the same value, just written a different way.
- Benchmark (Referencia) — A familiar number you use to guess, like 50% or 1/2.
- Discount (Descuento) — Money taken off the first price to make it cheaper.
- A common mistake in Relate Fractions, Decimals, and Percents is treating the numerator and denominator as the percent's digits — turning 3/5 into "35%" by just reading the 3 and the 5. Percent means out of 100, so the fix is to build an equivalent fraction with denominator 100: 5 × 20 = 100, so multiply the top by 20 too — 3/5 = 60/100 = 60%. A second version of this mistake is scaling only ONE part of the fraction (writing 3/5 = 3/100 or 60/5). Whatever you multiply the denominator by, you must multiply the numerator by the same number. When a denominator will not reach 100 evenly (8, 3, 7), divide the numerator by the denominator instead and then multiply by 100.
-
1 MULTIPLE CHOICE
What fraction is equal to 0.75?
- A3/4
- B7/5
- C3/5
- D7/10
✏️ Workspace & Solution Steps -
2 GUIDED FILL50% Model
Complete the new equivalence: 1/2 = ___ decimal = ___%.
- 1Divide 1 ÷ 2: ___.
- 2Multiply the decimal by 100: ___.
- 3Write the percent with its symbol: ___.
Final answer: -
3 GUIDED FILL25% Model
Complete the new equivalence: 1/4 = ___ decimal = ___%.
- 1Divide 1 ÷ 4: ___.
- 2Multiply the decimal by 100: ___.
- 3Write the percent with its symbol: ___.
Final answer:
Writing Task: Justify why your mathematical solution is accurate and complete.
4.2 · Part II
On-Level Application · Standard Rigor
Fractions, Decimals, and Percents · Percent
- Percent to Decimal: Divide by 100 (move decimal point 2 places left)
- Decimal to Percent: Multiply by 100 (move decimal point 2 places right)
- Fraction to Percent: Divide numerator by denominator, then convert decimal to percent
- Fractions, Decimals, and Percents (Fracciones, decimales y porcentajes) — Three equivalent ways to name the same part of a whole.
- Percent (Porcentaje) — A way to compare a number to 100, shown with the % sign.
- Decimal (Decimal) — A number with a dot, like 0.5, that shows a part less than one.
- Equivalent (Equivalente) — Having the same value, just written a different way.
- Benchmark (Referencia) — A familiar number you use to guess, like 50% or 1/2.
- Discount (Descuento) — Money taken off the first price to make it cheaper.
- A common mistake in Relate Fractions, Decimals, and Percents is treating the numerator and denominator as the percent's digits — turning 3/5 into "35%" by just reading the 3 and the 5. Percent means out of 100, so the fix is to build an equivalent fraction with denominator 100: 5 × 20 = 100, so multiply the top by 20 too — 3/5 = 60/100 = 60%. A second version of this mistake is scaling only ONE part of the fraction (writing 3/5 = 3/100 or 60/5). Whatever you multiply the denominator by, you must multiply the numerator by the same number. When a denominator will not reach 100 evenly (8, 3, 7), divide the numerator by the denominator instead and then multiply by 100.
-
1 MULTIPLE CHOICE
A game shows your score as 7/8 complete. What percent is that?
- A87.5%
- B78%
- C75%
- D88%
Rewrite each fractionWork it outSimplify -
2 MULTIPLE CHOICE
Your arcade scoreboard reads 0.25 of the level cleared. What percent and fraction match this score?
- A25% and 1/4
- B2.5% and 1/4
- C25% and 1/5
- D250% and 1/40
✏️ Workspace & Solution Steps -
3 MULTIPLE CHOICE
A player powered up 3/5 of the energy bar. Which decimal and percent name the same amount?
- A0.6 and 60%
- B0.35 and 35%
- C0.6 and 6%
- D0.65 and 65%
✏️ Workspace & Solution Steps
Writing Task: Justify why your mathematical solution is accurate and complete.
4.2 · Part II
Extension & Non-Routine Application
Fractions, Decimals, and Percents · Percent
- Percent to Decimal: Divide by 100 (move decimal point 2 places left)
- Decimal to Percent: Multiply by 100 (move decimal point 2 places right)
- Fraction to Percent: Divide numerator by denominator, then convert decimal to percent
- Fractions, Decimals, and Percents (Fracciones, decimales y porcentajes) — Three equivalent ways to name the same part of a whole.
- Percent (Porcentaje) — A way to compare a number to 100, shown with the % sign.
- Decimal (Decimal) — A number with a dot, like 0.5, that shows a part less than one.
- Equivalent (Equivalente) — Having the same value, just written a different way.
- Benchmark (Referencia) — A familiar number you use to guess, like 50% or 1/2.
- Discount (Descuento) — Money taken off the first price to make it cheaper.
- A common mistake in Relate Fractions, Decimals, and Percents is treating the numerator and denominator as the percent's digits — turning 3/5 into "35%" by just reading the 3 and the 5. Percent means out of 100, so the fix is to build an equivalent fraction with denominator 100: 5 × 20 = 100, so multiply the top by 20 too — 3/5 = 60/100 = 60%. A second version of this mistake is scaling only ONE part of the fraction (writing 3/5 = 3/100 or 60/5). Whatever you multiply the denominator by, you must multiply the numerator by the same number. When a denominator will not reach 100 evenly (8, 3, 7), divide the numerator by the denominator instead and then multiply by 100.
-
1 MULTIPLE CHOICE
What is the fraction 7/20 written as a decimal and as a percent?
- A0.35 and 35%
- B0.035 and 3.5%
- C0.7 and 70%
- D0.35 and 3.5%
✏️ Workspace & Solution Steps -
2 GUIDED FILL80% Model
Complete the new equivalence: 4/5 = ___ decimal = ___%.
- 1Divide 4 ÷ 5: ___.
- 2Multiply the decimal by 100: ___.
- 3Write the percent with its symbol: ___.
Final answer:
Writing Task: Justify why your mathematical solution is accurate and complete.