1.1.14 determine one amount expressed as a percentage of another.
John scored 36 out of 45 on a math test. What percentage did he score?
80% on the math test.
You're calculating the average weight of 3 packages: 1.25 kg, 2.78 kg, and 3.11 kg. Round the average weight to the nearest tenth of a kilogram.
First, find the total weight: 1.25 kg + 2.78 kg + 3.11 kg = 7.14 kg. Then, divide by 3 to get the average: 7.14 kg / 3 = 2.38 kg. Rounding to the nearest tenth means looking at the hundredths place (8). Since 8 is greater than or equal to 5, round the tenths place up. The average weight rounded to the nearest tenth is 2.4 kg.
Convert the fraction 3/4 into a decimal and a percentage.
0.75 and 75%.
A store is having a sale. A shirt originally priced at $30 is now $21. What is the percentage discount on the shirt?
30%
A recipe calls for 2.375 cups of flour. You only have measuring cups that measure in tenths of a cup. Round the amount of flour to the nearest tenth of a cup.
Looking at the hundredths place (7), we round the tenths place up. The rounded amount of flour is 2.4 cups.
A town's population increased from 12,000 to 15,000. What is the percentage increase in population?
The increase in population is 15,000 - 12,000 = 3,000. The percentage increase is (3,000 / 12,000) * 100 = 25%. The town's population increased by 25%.
5.2 m * 3.8 m
20m
A student answered 80% of the questions correctly on a test with 25 questions. How many questions did the student answer correctly?
80% of 25: 25 * 0.80 = 20.
5.7 + 5.8 round
12
You buy a new TV for $600. Sales tax is 8%. After you pay sales tax, you use a coupon for 10% off the total price (including tax). What is the final price you pay?
First, calculate the sales tax: $600 * 0.08 = $48. The price including tax is $600 + $48 = $648. Then, apply the 10% discount to the price with tax: $648 * 0.10 = $64.80. The final price you pay is $648 - $64.80 = $583.20
10