Practice with the help of **Spectrum Math Grade 5 Answer Key Chapter 2 Lesson 2.9 Rounding to the Nearest Whole Number** regularly and improve your accuracy in solving questions.

## Spectrum Math Grade 5 Chapter 2 Lesson 2.9 Rounding to the Nearest Whole Number Answers Key

Round 15.897 to the nearest whole number.

Look at the tenths digit. 15.__8__97

8 is greater than or equal to 5, so round 5 to 6 in the ones place.

Round 234.054 to the nearest whole number.

Look at the tenths digit. 234.__0__54

0 is less than 5, so keep the in the ones place.

**Round each to the nearest whole number.**

Question 1.

a. 6.421

_______

Answer:

6

Explanation:

Round 6.421 to the nearest whole number.

Look at the tenths digit.

4 is less than 5, so keep the same number in the ones place.

Therefore, 6.421 is rounded to 6.

b. 5.882

_______

Answer:

6

Explanation:

Round 5.882 to the nearest whole number.

Look at the tenths digit.

8 is greater than 5, so round 5 to 6 in the ones place.

Therefore, 5.882 is rounded to 6.

c. 19.235

_______

Answer:

19

Explanation:

Round 19.235 to the nearest whole number.

Look at the tenths digit.

2 is less than 5, so keep the same number in the ones place.

Therefore, 19.235 is rounded to 19.

d. 2.371

_______

Answer:

2

Explanation:

Round 2.371 to the nearest whole number.

Look at the tenths digit.

3 is less than 5, so keep the same number in the ones place.

Therefore, 2.371 is rounded to 2.

Question 2.

a. 45.288

_______

Answer:

45

Explanation:

Round 45.288 to the nearest whole number.

Look at the tenths digit.

2 is less than 5, so keep the same number in the ones place.

Therefore, 45.288 is rounded to 45.

b. 97.5

_______

Answer:

98

Explanation:

Round 97.5 to the nearest whole number.

Look at the tenths digit.

5 is greater than or equal to 5, so round 7 to 8 in the ones place.

Therefore, 97.5 is rounded to 98.

c. 12.003

_______

Answer:

12

Explanation:

Round 12.003 to the nearest whole number.

Look at the tenths digit.

0 is less than 5, so keep the same number in the ones place.

Therefore, 12.003 is rounded to 12.

d. 72.71

_______

Answer:

73

Explanation:

Round 72.71 to the nearest whole number.

Look at the tenths digit.

7 is greater than 5, so round 2 to 3 in the ones place.

Therefore, 72.71 is rounded to 73.

Question 3.

a. 13.936

_______

Answer:

14

Explanation:

Round 13.936 to the nearest whole number.

Look at the tenths digit.

9 is greater than 5, so round 3 to 4 in the ones place.

Therefore, 13.936 is rounded to 14.

b. 8.42

_______

Answer:

8

Explanation:

Round 8.42 to the nearest whole number.

Look at the tenths digit.

4 is less than 5, so keep the same number in the ones place.

Therefore, 8.42 is rounded to 8.

c. 1.100

_______

Answer:

1

Explanation:

Round 1.100 to the nearest whole number.

Look at the tenths digit.

1 is less than 5, so there is no change of number in the ones place.

Therefore, 1.100 is rounded to 1.

d. 65.39

_______

Answer:

65

Explanation:

Round 65.39 to the nearest whole number.

Look at the tenths digit.

3 is less than 5, so there is no change of number in the ones place.

Therefore, 65.39 is rounded to 65.

Question 4.

a. 98.55

_______

Answer:

99

Explanation:

Round 98.55 to the nearest whole number.

Look at the tenths digit.

5 is greater than or equal to 5, so round 8 to 9 in the ones place.

Therefore, 98.55 is rounded to 99.

b. 269.57

_______

Answer:

270

Explanation:

Round 269.57 to the nearest whole number.

Look at the tenths digit.

5 is greater than or equal to 5, so round 9 to 10 in the ones place.

Therefore, 269.57 is rounded to 270.

c. 14.369

_______

Answer:

14

Explanation:

Round 14.369 to the nearest whole number.

Look at the tenths digit.

3 is less than 5, so there is no change of number in the ones place.

Therefore, 14.369 is rounded to 14.

d. 23.09

_______

Answer:

23

Explanation:

Round 23.09 to the nearest whole number.

Look at the tenths digit.

0 is less than 5, so there is no change of number in the ones place.

Therefore, 23.09 is rounded to 23.

Question 5.

a. 95.645

_______

Answer:

96

Explanation:

Round 95.645 to the nearest whole number.

Look at the tenths digit.

6 is greater than 5, so round 5 to 6 in the ones place.

Therefore, 95.645 is rounded to 96.

b. 8.67

_______

Answer:

9

Explanation:

Round 8.67 to the nearest whole number.

Look at the tenths digit.

6 is greater than 5, so round 8 to 9 in the ones place.

Therefore, 8.67 is rounded to 9.

c. 99.198

_______

Answer:

99

Explanation:

Round 99.198 to the nearest whole number.

Look at the tenths digit.

1 is less than 5, so there is no change of number in the ones place.

Therefore, 99.198 is rounded to 99.

d. 51.70

_______

Answer:

52

Explanation:

Round 51.70 to the nearest whole number.

Look at the tenths digit.

7 is greater than 5, so round 1 to 2 in the ones place.

Therefore, 51.70 is rounded to 52.

Question 6.

a. 29.98

_______

Answer:

30

Explanation:

Round 29.98 to the nearest whole number.

Look at the tenths digit.

9 is greater than 5, so round 9 to 10 in the ones place.

Therefore, 29.98 is rounded to 30.

b. 98.4

_______

Answer:

98

Explanation:

Round 98.4 to the nearest whole number.

Look at the tenths digit.

4 is less than 5, so there is no change of number in the ones place.

Therefore, 98.4 is rounded to 98.

c. 33.333

_______

Answer:

33

Explanation:

Round 33.333 to the nearest whole number.

Look at the tenths digit.

3 is less than 5, so there is no change of number in the ones place.

Therefore, 33.333 is rounded to 3.

d. 67.67

_______

Answer:

68

Explanation:

Round 67.67 to the nearest whole number.

Look at the tenths digit.

6 is greater than 5, so round 7 to 8 in the ones place.

Therefore, 67.67 is rounded to 68.