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Math: Estimation and Measurement Flashcards

7 cards from real CBEST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Math: Estimation and Measurement flashcards as text

  1. A swimming pool holds approximately 18,500 gallons. Which is the best estimate of its capacity in thousands of gallons?

    Answer: About 18,000 gallons

    18,500 rounds to 18,000 when rounding to the nearest thousand.

  2. A runner completes a 10-kilometer race in 52 minutes. What is the approximate pace per kilometer?

    Answer: About 5 minutes

    52 ÷ 10 = 5.2 minutes per kilometer, which is approximately 5 minutes.

  3. Which temperature is closest to normal human body temperature?

    Answer: 37°C

    Normal body temperature is 98.6°F, which equals approximately 37°C.

  4. A bag of potatoes weighs 5 pounds 8 ounces. How many total ounces does it weigh?

    Answer: 88 ounces

    5 pounds × 16 oz/lb = 80 oz, plus 8 oz = 88 oz total.

  5. A classroom floor measures 24 feet by 30 feet. If tiles are 1 foot square, approximately how many tiles are needed?

    Answer: About 720

    24 × 30 = 720 square feet, so exactly 720 tiles are needed.

  6. Which is the most reasonable estimate for the height of a standard doorway?

    Answer: 6.5 feet

    Standard residential doorways are typically 6 feet 8 inches, or about 6.5 feet tall.

  7. A plumber charges $85 per hour and works for 3 hours 45 minutes. What is the best estimate of the total charge?

    Answer: About $320

    85 × 3.75 = $318.75, which is closest to about $320.