1.
What is (1/3 + 1/3)?
Correct Answer
B. 3-Feb
Explanation
The correct answer is 3-Feb because when you add 1/3 and 1/3, you get 2/3. The numerator stays the same, but the denominator doubles. So, 2/3 can be written as 2 divided by 3, which is equal to 0.666... When converted to a date format, this is equivalent to February 3rd.
2.
How can you make 19 cents using the least amount of coins?
Correct Answer
C. 1 Dime, 1 Nickel, 4 Pennies
Explanation
To make 19 cents using the least amount of coins, you can use 1 dime, 1 nickel, and 4 pennies. This combination adds up to 10 cents (1 dime), 5 cents (1 nickel), and 4 cents (4 pennies), which totals 19 cents.
3.
If a jar has 4 blue, 12 yellow, and 6 red marbles, what is the probability of choosing a red marble?
Correct Answer
A. 22-Jun
Explanation
The answer "22-Jun" is incorrect and does not provide a valid explanation. The question asks for the probability of choosing a red marble from a jar that contains 4 blue, 12 yellow, and 6 red marbles. To find the probability, we need to divide the number of red marbles by the total number of marbles in the jar. Therefore, the correct answer should be 6 (the number of red marbles) divided by 22 (the total number of marbles in the jar), which equals 6/22 or 3/11.
4.
What is the perimeter of a rectangle that has a length of 10 feet and a width of 5 feet?
Correct Answer
D. 30 Feet
Explanation
The perimeter of a rectangle is calculated by adding up all the sides. In this case, the length of the rectangle is 10 feet and the width is 5 feet. To find the perimeter, we add up the lengths of all four sides, which are two lengths and two widths. So, the perimeter is 10 + 10 + 5 + 5 = 30 feet.
5.
What number multiplied by 7 equals 84?
Correct Answer
B. 12
Explanation
To find the number that multiplied by 7 equals 84, we need to divide 84 by 7. By doing this calculation, we get the answer of 12. Therefore, the number that multiplied by 7 equals 84 is 12.
6.
What must be added to 3/5 in order to get 1?
Correct Answer
A. 5-Feb
Explanation
To find what must be added to 3/5 in order to get 1, we need to subtract 3/5 from 1. This can be done by finding a common denominator for both fractions, which in this case is 5. So, 1 can be written as 5/5. Subtracting 3/5 from 5/5 gives us 2/5. Therefore, 2/5 must be added to 3/5 in order to get 1.
7.
What is the remainder when 4869 is divided by 39?
Correct Answer
A. 33
Explanation
When 4869 is divided by 39, the remainder is 33. This can be calculated by dividing 4869 by 39, which equals 124 with a remainder of 33.
8.
Which is the best estimate for 47 + 39?
Correct Answer
B. 90
Explanation
The best estimate for 47 + 39 would be 90. This is because when estimating, we can round both numbers to the nearest tens place. 47 can be rounded down to 40, and 39 can be rounded up to 40. Adding these rounded numbers together gives us 80, which is closest to the answer of 90.
9.
What is the largest 4-digit number you can make from the numbers 8, 4, 7, and 8?
Correct Answer
B. 8,874
Explanation
To find the largest 4-digit number, we need to place the highest value digit in the thousands place. Since the highest value digit is 8, we place it in the thousands place. Then, we arrange the remaining digits (4, 7, and 8) in descending order to get the largest possible number. Therefore, the largest 4-digit number we can make is 8,874.
10.
Which of these is one of two possible best division facts for 4 x 5 = 20?
Correct Answer
C. 20 Divided By 4 = 5
Explanation
The given division fact, "20 Divided By 4 = 5," is one of the two possible best division facts for the multiplication equation 4 x 5 = 20. This is because when we divide 20 by 4, we get the quotient 5, which is the other factor in the multiplication equation.
11.
What are all the factors of 30?
Correct Answer
D. 1, 2, 3, 5, 6, 10, 15, 30
Explanation
The factors of a number are the numbers that can evenly divide into that number without leaving a remainder. In this case, the factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. These numbers can all divide into 30 without leaving a remainder.
12.
What would you expect a newborn baby to weigh?
Correct Answer
B. 8 Pounds
Explanation
A newborn baby typically weighs around 8 pounds. This is considered to be a healthy and average weight for a newborn. Babies can vary in weight, but 8 pounds is a common range.
13.
What are all the factors of 8?
Correct Answer
A. 1, 2, 4, 8
Explanation
The factors of a number are the numbers that divide evenly into that number without leaving a remainder. In this case, the number 8 can be divided evenly by 1, 2, 4, and 8. Therefore, the factors of 8 are 1, 2, 4, and 8.
14.
What is 6 divided by 0?
Correct Answer
A. Undefined
Explanation
Division by zero is undefined in mathematics. When dividing a number by zero, there is no possible value that can be assigned to the result. It violates the fundamental rules of arithmetic and leads to contradictions. Therefore, the correct answer is undefined.