1. Evaluate.

54 divied (42 + 2)

2. Evaluate 120 cal/g x 4 g. Be sure to use the proper units.
A) 480 g
B) 480 g/cal
C) 480 cal
D) 480 cal/g

3. Prime numbers that differ by 2 are called twin primes. Examples are 3 and 5, 5 and 7, and so on. Which pair of numbers are twin primes?
A) 109 and 111
B) 61 and 63
C) 13 and 15
D) 41 and 43

4. Do the indicated addition.

2 + 3 + 7

5. Complete the statement.

7,000,000 ns = __________ ms

6. Multiply.



7. Find the reciprocal of 17/20

8. In the number 150,987,972, what number tells the number of millions?
A) 0
B) 5
C) 9
D) 8

9. Multiply.



A) 246,052
B) 246,942
C) 244,962
D) 236,182

10. Choose the correct greatest common factor of 28, 42, and 70.
A) 14
B) 7
C) 2
D) 6

11. Divide1/8 divided 5/6 Write the result in simplest form.

12. Identify 7/9 as a proper fraction, an improper fraction, or a mixed number.

13. Find the prime factorization of the number 363.

14. Divide 7/8 divided by 7 Write the result in simplest form.

15. An airline had 122, 138, 114, and 133 passengers on four flights from San Diego to San Jose during 1 day. What was the total number of passengers?
A) 507
B) 607
C) 617
D) 497

16. Sasha's score on a math test was 59, and Troy's score was 32 points less than Sasha's. What was Troy's score on the test?

17. Write 4 x 4 x 4 x 4 x 4 as a power of 4.
A) 45
B) 54
C) 54
D) 45

18. Name the property of addition that is illustrated.

7 + (6 + 8) = 7 + (8 + 6)
A) Associative property of addition
B) Commutative property of addition
C) Additive identity property

19. Choose the correct list of the factors of the number 8.
A) 1 and 8
B) 2, 2, and 2
C) 1, 2, and 8
D) 1, 2, 4, and 8

20. Find the area of the figure.

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1. To evaluate the expression 54 divided by (42 + 2), you need to start by evaluating the addition inside the parentheses first. 42 + 2 equals 44. Then divide 54 by 44 to get the final answer.

2. To evaluate the expression 120 cal/g x 4 g, you simply multiply the numbers together. The units are important, so be sure to include them in the calculation. 120 cal/g x 4 g equals 480 cal.

3. Twin primes are prime numbers that differ by 2. To find which pair of numbers are twin primes, you need to check if each pair of numbers is prime and if they differ by 2. For example, 109 and 111 are not twin primes because 111 is not a prime number. Similarly, 61 and 63 are not twin primes because they differ by more than 2. 13 and 15 are not twin primes because 15 is not a prime number. The correct pair of twin primes is 41 and 43, both of which are prime numbers and differ by 2.

4. To do the indicated addition 2 + 3 + 7, simply add the numbers together to get the sum. 2 + 3 + 7 equals 12.

5. To convert 7,000,000 nanoseconds (ns) to milliseconds (ms), you need to know the conversion factor that 1 millisecond is equal to 1,000,000 nanoseconds. Divide 7,000,000 by 1,000,000 to get the result in milliseconds. 7,000,000 ns / 1,000,000 = 7 ms.

6. For the question "Multiply," the question is incomplete and does not provide any numbers or expressions to multiply. Therefore, it is not possible to give an answer without the necessary information.

7. To find the reciprocal of the fraction 17/20, you simply flip the fraction upside down. The reciprocal of 17/20 is 20/17.

8. In the number 150,987,972, the number that tells the number of millions is 9. Each digit in a number is associated with a place value, and in this case, the 9 is in the millions place.

9. For the question "Multiply," the question is incomplete and does not provide any numbers or expressions to multiply. Therefore, it is not possible to give an answer without the necessary information.

10. To find the greatest common factor (GCF) of 28, 42, and 70, you can list out the factors of each number and find the largest number that is common to all three. The factors of 28 are 1, 2, 4, 7, 14, and 28. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 70 are 1, 2, 5, 7, 10, 14, 35, and 70. The largest number that appears in all three lists is 14, so the correct answer is A) 14.

11. To divide 1/8 by 5/6, you need to multiply by the reciprocal of the second fraction. Flip 5/6 upside down so that it becomes 6/5. Then multiply the fractions together: 1/8 x 6/5. Multiply the numerators together (1 x 6) and multiply the denominators together (8 x 5). The resulting fraction is 6/40, which can be simplifed to 3/20.

12. The fraction 7/9 is a proper fraction because the numerator (7) is less than the denominator (9).

13. To find the prime factorization of the number 363, you can start by finding the smallest prime number that divides into 363. In this case, the smallest prime number that divides into 363 is 3. Divide 363 by 3 to get 121. Then continue dividing by the smallest prime numbers until you cannot divide anymore. The prime factorization of 363 is 3 x 11 x 11, where 3 and 11 are both prime numbers.

14. To divide 7/8 by 7, you can simplify the expression by cancelling out the common factor of 7. 7/8 divided by 7 equals 1/8.

15. To find the total number of passengers on the four flights, you need to add up the number of passengers on each flight. Add 122 + 138 + 114 + 133 to get the total number of passengers. The answer is C) 617.

16. If Sasha's score on a math test was 59 and Troy's score was 32 points less than Sasha's, you need to subtract 32 from 59 to find Troy's score. 59 - 32 equals 27. Troy's score on the test was 27.

17. To write 4 x 4 x 4 x 4 x 4 as a power of 4, you count the number of times 4 is multiplied by itself. In this case, 4 is multiplied by itself 5 times, so it can be written as 4^5.

18. The property of addition that is illustrated in the equation 7 + (6 + 8) = 7 + (8 + 6) is the associative property of addition. This property states that the grouping of numbers being added does not affect the sum.

19. The factors of the number 8 are 1, 2, 4, and 8. The correct answer is D) 1, 2, 4, and 8.

20. for the question "Find the area of the figure," there is no figure provided. Without the necessary information, it is not possible to find the area.