Refer to our Texas Go Math Grade 5 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 5 Module 7 Assessment Answer Key.

## Texas Go Math Grade 5 Module 7 Assessment Answer Key

**Vocabulary**

**Choose the best term from the box.**

Vocabulary

composite number

numerical expression

prime number

Question 1.

A ___________ is a whole number greater than 1 that has exactly two factors, 1 and itself. (p. 297)

Answer:

A **Prime number** is a whole number greater than 1 that has exactly two factors, 1 and itself.

Question 2.

A ____________ is a mathematical phrase that has numbers and operation signs but does not have an equal sign. (p. 303)

Answer:

A **numerical expression** is a mathematical phrase that has numbers and operation signs but does not have an equal sign.

**Concepts and Skills**

**Decide if the number Is prime or composite. If it is composite, list the factor pairs. (TEKS 5.4.A)**

Question 3.

54

Answer:

The number 54 is a composite number.

The factor pairs are as below.

1 Ã— 54 = 54

2 Ã— 27 = 54

3 Ã— 18 = 54

6 Ã— 9 = 54

9 Ã— 6 = 54

Explanation:

In Mathematics, composite numbers are numbers that have more than two factors. The number 54 is a composite number. The factors of 54 are 1, 2, 3, 6, 9, 18, 27, 54. The factor pairs of 54 are (1, 54), (2, 27), (3, 18), (6, 9), (9,6).

**Go Math Answer Key Grade 5 Module 7 Question 4.**

28

Answer:

The number 28 is a composite number.

The factor pairs areas below.

1 x 28 = 28

2 x 14 = 28

4 x 7 = 28

7 x 4 = 28

Explanation:

In Mathematics, composite numbers are numbers that have more than two factors. The number 28 is a composite number. The factors of 28 are 1, 2, 4, 7, 14, 28. The factor pairs of 28 are (1, 28), (2, 14), (4, 7), (7,4).

**Tell whether the number Is prime or composite. (TEKS 5.4.A)**

Question 5.

33

Answer:

The factors of 33 are 1, 3, 11, 33.

So, the numberÂ **33**Â is a**Â composite number.**

Explanation:

A composite number is a number that can be divided evenly by more numbers than 1 and itself. The number 33 can be evenly divided by 1, 3, 11 and 33, with no remainder. Since 33 cannot be divided by just 1 and 33. So, 33 is a composite number.

Question 6.

47

Answer:

The factors of 47 are 1, 47. So, **47 is a prime number**.

Explanation:

47 is a prime number. The number 47 is divisible only by 1 and the number itself. The number 47 is classified as a prime number, because it have exactly two factors.

Question 7.

91

Answer:

The factors of 91 are 1, 7, 13, 91. So, 91 is a **composite number**.

Explanation:

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number. The number 91 can be evenly divided by 1, 7, 13, 91 with no remainder. Since 91 cannot be divided by just 1 and 91. So, it is a composite number.

**Grade 5 Module 7 Test Answer Key Texas Go Math Question 8.**

81

Answer:

The factors of 81 are 1, 3, 9, 27, 81

So, the numberÂ **81**Â is a**Â composite number.**

Explanation:

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number. The number 81 can be evenly divided by 1, 3, 9, 27, and 81, with no remainder. Since 81 cannot be divided by just 1 and 81. So, it is a composite number.

**Simplify the numerical expression. (TEKS 5.4.F)**

Question 9.

18 – (8 Ã— 3) Ã· 4

Answer:

18 – (8 Ã— 3) Ã· 4

18 – 24 Ã· 4

18 – 6

**12**

Explanation:

The numerical expression is 18 – (8 Ã— 3) Ã· 4. Perform the operations in the parentheses first 18 – 24 Ã· 4. Next perform the division operation 18 – 6. Then perform subtraction operation the difference is 12. The simplified form of given numerical expression is 12.

Question 10.

35 – [(4 Ã— 5) + (2 Ã— 5)]

Answer:

35 – [(4 Ã— 5) + (2 Ã— 5)]

35 – [20 + 10]

35 – 30

**5**

Explanation:

The numerical expression using parentheses and brackets is 35 – [(4 Ã— 5) + (2 Ã— 5)]. Perform the operations in the parentheses first 35 – [20 + 10]. Next perform the operations in the brackets 35 – 30. Then perform subtraction operation the difference is 5. The simplified form of given numerical expression is 5.

**Fill in the bubble completely to show your answer.**

Question 11.

Students in a math contest are asked to simplify a numerical expression. The correct answer is 34. Which could be the expression? (TEKS 5.4.F)

(A) 6 + 3 Ã— 4 – 2

(B) 6 + 3 Ã— (4 – 2)

(C) (6 + 3) Ã— 4 – 2

(D) 6 + (3 Ã— 4) – 2

Answer:

(6 + 3) Ã— 4 – 2

9 x 4 – 2

36 – 2

**34**

So, option C is correct.

Explanation:

Students in a math contest are asked to simplify a numerical expression. The correct answer is 34. The numerical expression is (6 + 3) Ã— 4 – 2. The simplified form of numerical expression is 34.

**Texas Go Math Grade 5 Module 7 Assessment Question 12.**

Ana writes the expression (8 Ã— 4) + (6 Ã— 3) to represent the number of cards in her sports card collection. Which could be Ana’s sports card collection? (TEKS 5.4.E)

(A) 8 soccer cards and 4 baseball cards in one box, 6 soccer cards and 3 baseball cards in another box

(B) 8 soccer cards were separated into 4 boxes, and 6 baseball cards were separated into 3 boxes

(C) 8 boxes with 4 soccer cards in each box, 6 boxes with 3 baseball cards in each box

(D) 12 soccer cards, 9 baseball cards

Answer:

Option C is correct.

Explanation:

Ana writes the expression (8 Ã— 4) + (6 Ã— 3) to represent the number of cards in her sports card collection. Ana’s sports card collection is 8 boxes with 4 soccer cards in each box, 6 boxes with 3 baseball cards in each box.

Question 13.

A florist has 9 daffodils and twice as many tulips. He donates the flowers equally to 3 parks. Which expression represents the number of flowers each park receives? (TEKS 5.4.E)

(A) (9 Ã— 2) Ã· 3

(B) [9 + (2 Ã— 9)] Ã· 3

(C) [9 Ã— (2 Ã— 9)] Ã· 3 .

(D) [9 Ã— (2 Ã— 9)] Ã· 3

Answer:

Option B is correct.

Explanation:

A florist has 9 daffodils and twice as many tulips. He donates the flowers equally to 3 parks. The expression represents the number of flowers each park receives is [9 + (2 Ã— 9)] Ã· 3.

**Texas Go Math Grade 5 Module 7 Answer Key Question 14.**

David washes 10 cars and waxes 4 cars every Saturday. He earns $5 for each car he washes and $12 for each car he waxes. How much money does he earn on 3 Saturdays in dollars? Simplify the expression 3 Ã— [(10 Ã— 5) + (4 Ã— 12)] to find the answer. (TEKS 5.4.F)

Record your answer and fill in the bubbles on the grid. Be sure to use the correct place value.

Answer:

3 Ã— [(10 Ã— 5) + (4 Ã— 12)]

3 x [50 + 48]

3 x 98

**$294.00
**On 3 Saturdays he earns $294.00.

Explanation:

David washes 10 cars and waxes 4 cars every Saturday. He earns $5 for each car he washes and $12 for each car he waxes. The expression is 3 Ã— [(10 Ã— 5) + (4 Ã— 12)]. The simplified form of the expression is $294.00. On 3 Saturdays he earns $294.00.