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What is the sum of 9.98 and 0.065?
- A. 10.63
- B. 10.045
- C. 1.0063
- D. 998.065
Correct Answer: B
Rationale: To find the sum of 9.98 and 0.065, you need to add them together. When you add 9.98 and 0.065, the result is 10.045. Therefore, the correct answer is B, 10.045. Remember to pay attention to the decimal points when adding numbers to ensure accuracy. In this case, the sum involves adding a number with three decimal places to a number with two decimal places, so align the decimals and carry out the addition accurately to get the correct sum.
You may also like to solve these questions
Which number system is commonly used in the United States?
- A. Tertiary
- B. Decimal
- C. Napoleonic
- D. Binary
Correct Answer: B
Rationale: The correct answer is B: Decimal. The decimal number system, based on powers of 10, is the most commonly used number system in the United States and many other parts of the world. It employs 10 digits (0-9) and is used for everyday calculations, commerce, and representation of numbers in various contexts. The use of the decimal system simplifies arithmetic operations and aligns with the way people count using their ten fingers, making it intuitive and widely adopted.
Identify the number that represents the largest amount.
- A. 95%
- B. 1.25%
- C. 16.25%
- D. 73.90%
Correct Answer: A
Rationale: Correct Answer: A
Rationale:
To identify the largest amount, we look for the highest percentage value. 95% is the highest among the given choices.
Summary:
- Choice B (1.25%) is the smallest percentage.
- Choice C (16.25%) is higher than choice B but not the largest.
- Choice D (73.90%) is lower than choice A, making it incorrect.
In conclusion, 95% (Choice A) represents the largest amount among the options provided.
How many liters are in 300 milliliters?
- A. 0.3 liters
- B. 3 liters
- C. 0.03 liters
- D. 3.30 liters
Correct Answer: A
Rationale: To convert milliliters to liters, divide by 1000 because 1 liter is equal to 1000 milliliters. Therefore, 300 milliliters is equal to 0.3 liters (300 · 1000 = 0.3). The correct answer is 0.3 liters, as 300 milliliters is a fraction of a liter, not a whole liter.
Which fraction represents the largest value?
- A. 3/7
- B. 3/6
- C. 3/9
- D. 3/8
Correct Answer: B
Rationale: To determine the largest fraction when the numerators are the same, compare the denominators. A smaller denominator indicates a larger fraction as it represents more significant parts of a whole. In this case, the fractions all have a common numerator of 3. Comparing the denominators, 6 is the smallest, making 3/6 the largest fraction. Therefore, 3/6 represents the largest value among the options. Remember, when fractions have the same numerator, the fraction with the smaller denominator is larger as it represents a larger portion of the whole.
A person is responsible for replacing light bulbs when they stop working in an outdoor sign. The sign has 1,652 bulbs, and 42% of the bulbs burn out every week. How many light bulbs should the person expect to replace each day when working 7 days a week?
- A. 694
- B. 99
- C. 294
- D. 42
Correct Answer: B
Rationale: To find out how many light bulbs the person should expect to replace each day, first, calculate the number of bulbs that burn out each week: 1,652 bulbs — 0.42 = 694 bulbs. Then, divide by the number of days worked per week, which is 7: 694 · 7 = 99. Therefore, the person should expect to replace approximately 99 bulbs each day.