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BC Graduation Assessments Decimals — practice questions

Explore 3 free Decimals questions in BC Graduation Assessments Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Decimals questions and exercises with answers

Showing questions 1–3 of 3.

Hector put 13 gallons of gas into his car at $3.175 per gallon. Rounded to the nearest cent, how much does Hector owe at the pump?Read the answer and worked solution →A circular fire pit needs a metal edging strip all the way around. The circle has a radius of 50 inches. Using 3.14 for pi, how long a strip should be bought?Read the answer and worked solution →Ring up the right amountRead the answer and worked solution →

Worked practice questions

Hector put 13 gallons of gas into his car at $3.175 per gallon. Rounded to the nearest cent, how much does Hector owe at the pump?

  1. $41.27
  2. $41.30
  3. $41.28
  4. $38.10
Show answer and solution

Correct answer: C. $41.28

1. The cost is the number of gallons times the price of one gallon. 2. Multiply: 13 times 3.175 equals 41.275 dollars. 3. Money is rounded to the nearest cent, the hundredths place, so look at the digit to its right, which is 5. 4. Since that digit is 5 or greater, add 1 to the hundredths digit: 41.275 rounds to 41.28. 5. Cutting the extra digit off without rounding gives $41.27, which shortchanges the pump by the rounding rule. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 5 "Decimals", section 5.2 Decimal Operations_

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A circular fire pit needs a metal edging strip all the way around. The circle has a radius of 50 inches. Using 3.14 for pi, how long a strip should be bought?

  1. 314 inches
  2. 157 inches
  3. 7,850 inches
  4. 100 inches
Show answer and solution

Correct answer: A. 314 inches

1. The distance around a circle is its circumference, given by C equals 2 times pi times r. 2. Substitute 3.14 for pi and 50 inches for r: C is approximately 2 times 3.14 times 50. 3. Multiply: 2 times 3.14 is 6.28, and 6.28 times 50 equals 314. 4. The strip should be about 314 inches long. 5. 157 inches uses pi times r and forgets the factor of 2, so the strip would only reach halfway around. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 5 "Decimals", section 5.3 Decimals and Fractions_

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Ring up the right amount

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Questions
  1. Answer
    15
    Question
    Noriko buys 4 coffees at $3.75 each. Total cost in dollars?
  2. Answer
    390
    Question
    Four friends split a $15.60 pizza bill equally. Each pays how many cents?
  3. Answer
    12.75
    Question
    Alan worked 30 hours and earned $382.50. His hourly rate in dollars?
Instructions
Work each money problem out, then type the number on the pad.
_Source: OpenStax Prealgebra (CC BY 4.0), Ch 5 "Decimals", section 5.2 Decimal Operations_

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