Quiz & test questions Grade 6 Math
Bramblewood Home Water Audit: A Percent and Leak Quiz
A grade 6 quiz mixing multiple-choice, short-answer, and computation items on home water use and leaks, using percent, unit rate, and decimals.
Objectives
- Students will find a percent of a home's daily water use and scale a yearly leak amount.
- Students will interpret home water-use facts and explain where to look for savings.
Vocabulary
Key words: percent, leak, indoor use, audit
Teacher overview
This 25-minute quiz is worth 20 points. It checks whether students can apply percent, unit rate, and decimals to home water use and leaks. The quiz mixes two multiple-choice items, four computation items, and one short-answer item, built around a fictional family's water audit. Several numbers come from published water-use facts, and students scale and compare them.
Assessment
- (2 points) EPA WaterSense says a faucet that drips once each second can waste more than ___ gallons of water in a year. Which number goes in the blank?
- A) 300
- B) 3,000
- C) 30,000
- D) 300,000
- (3 points) The Bramblewood family is a fictional family. Two of their faucets each drip once per second. Use 3,000 gallons a year for each faucet. About how many gallons do the two faucets waste in a year together?
- (2 points) In a 2016 Water Research Foundation study of single-family homes, about what percent of indoor water was used by toilets?
- A) 5 percent
- B) 24 percent
- C) 50 percent
- D) 90 percent
- (4 points) A typical household uses about 300 gallons of water per day, and about 70 percent is used indoors. How many gallons per day is used indoors?
- (3 points) Household leaks waste about 9,400 gallons per year. If the family fixes its leaks and cuts that amount in half, how many gallons do they save in a year?
- (3 points) The family cut its use from 300 gallons per day down to 255 gallons per day. How many gallons per day did they save?
- (3 points) Using your answer to item 4, explain why indoor fixtures like toilets and showers are a good place to look for water savings. Answer in one or two sentences.
From Water for Schools (waterforschools.org). This material is in the public domain (CC0) and may be copied, edited, and shared freely.
Answer Key
- Answer: B) 3,000 gallons. EPA WaterSense says a faucet dripping once per second can waste more than 3,000 gallons in a year. The real amount depends on how big each drip is.
- Answer: 6,000 gallons. Using 3,000 gallons for each faucet, 2 × 3,000 = 6,000 gallons.
- Answer: B) 24 percent. In the Water Research Foundation's 2016 study of single-family homes, toilets used about 24 percent of indoor water, more than any other single indoor use.
- Answer: 210 gallons. 300 gallons × 0.70 = 210 gallons used indoors each day.
- Answer: 4,700 gallons. Half of 9,400 gallons is 9,400 ÷ 2 = 4,700 gallons saved in a year.
- Answer: 45 gallons. 300 gallons − 255 gallons = 45 gallons saved each day.
- Answer: Accept any answer noting that indoor use is a large share of the daily 300 gallons (about 210 gallons from item 4), so fixing high-use indoor fixtures like toilets and showers saves more than small outdoor changes.
Differentiation
Support
Provide the multiplication in item 4 already set up (300 × 0.70) so students only finish the arithmetic. Allow a calculator for all computation items, and give a reminder card showing that "percent means out of 100."
Extension
Ask students to find how many gallons the family would save in a full year if they cut daily use by 45 gallons every day, and to compare that yearly saving with the 4,700 gallons saved by fixing leaks from item 5.
ELL supports
Pre-teach "leak," "indoor," "percent," and "audit" with simple icons of a dripping faucet and a toilet. Provide a sentence frame for item 7: "Indoor fixtures are a good place to save because ___." Allow short-phrase answers rather than full sentences.