Sports Stats
25 hits in 100 at‑bats. Show the batting average as a decimal and a percent.
25/100 = 0.25 = 25 %
A granola bar has 10 g of sugar in a 40 g bar. Express the sugar content as a fraction, decimal, and percent of the bar.
10/40 = 1/4 = 0.25 = 25 %
Mars orbits at 0.39 AU. Write that distance as a percent and a fraction of Earth’s 1 AU orbit.
0.39 = 39 % = 39/100
A $40 hoodie is 25 % off today. What is the sale price? Show the calculation using a decimal multiplier and a percent.
$40 × 0.75 = $30 (25 % discount)
A basketball player sinks 45 of 60 free throws. Convert the success rate into fraction (simplest form), decimal to thousandths, and percent to one decimal place.
45/60 → 3/4 = 0.750 = 75.0 %
A label shows 8 % Daily Value of iron per 30 g serving. If you eat 75 g, what percent of your daily iron do you consume? Express your answer as percent and fraction.
8 % per 30 g ⇒ ≈ 0.2667 % per g
⇒ 75 g ≈ 20 %.
Fraction ≈ 1/5
Jupiter’s diameter ≈ 142 000 km; Earth’s ≈ 12 800 km. About what percent larger is Jupiter’s diameter than Earth’s? Show the calculation and write the value as a decimal and percent.
*Hint: Find the size difference first*
Step 1 - Find the size difference:
142 000 km - 12 800 km = 129 200 km
Step 2 - Divide the difference by Earth's diameter:
129 200/12 800 ≈ 10.09375
This decimal tells us the difference is 10.09375 x Earth's diameter.
Step 3 - Convert to a percent larger:
10.09375×100%≈1009.4%
Therefore, Jupiter ≈ 1009 % of Earth diameter
⇒ ≈ 1009 % larger or 10.09
You earn $75 and decide to save 0.4 of it. How much money do you save? Show the amount saved and the percent saved.
$75 × 0.4 = $30 saved (40 %)
A pitcher wins 12 of 45 games this season. Next year the pitcher improves win rate by 15 %. How many games would the pitcher win in a 45‑game season? Show your work using decimal and percent reasoning.
12/45 = 0.267…
15 % increase → 0.267 × 1.15 ≈ 0.307
→ 0.307 × 45 ≈ 14 wins
A bottle of juice lists 35 mg sodium, which is 1.5 % of the daily limit. Verify this claim by converting 35 mg to a fraction and percent of a 2300 mg daily limit (round to hundredths).
35 mg / 2300 mg ≈ 0.0152
= 1.52 % (~1.5 % matches)
The Moon orbits Earth every 27.3 days. Express this as a decimal and percent of one Earth year (365 days), rounding to two decimal places.
27.3/365 ≈ 0.0748 = 7.48 % of a year
A bank pays 2.75 % interest on $500 for one year. How much interest is earned? Express 2.75 % as a decimal, a fraction, and calculate the dollar amount.
2.75 % = 0.0275 = 27.5/1000
$500 × 0.0275 = $13.75