This handy **Spectrum Math Grade 4 Answer Key Chapter 2 Lesson 2.3 Rounding** provides detailed answers for the workbook questions.

## Spectrum Math Grade 4 Chapter 2 Lesson 2.3 Rounding Answers Key

**Rounding**

Round 783,538 to the nearest ten thousand.

Look at the thousands digit. 15,__8__97

8 is greater than or equal to 5, so round 5 to 6 in the thousands place. Follow with zeros.

16,000

Round 234,034 to the nearest hundred. Look at the tens digit. 234,0__3__4

3 is less than 5, so 0 stays in the hundreds place. Follow with zeros.

234,000

**Round to the nearest ten.**

Question 1.

a. 6,421

________

Answer:

Given that the number is 6,421.

Here 1 is in ones place and 2 in tens place.

1 is less than 5. so, replace 1 with 0.

Therefore 6,421 rounded to the nearest ten is 6,420.

b. 5,882

________

Answer:

Given that the number is 5,882.

Here 2 is in ones place and 8 in tens place.

2 is less than 5. so, replace 2 with 0.

Therefore 5,882 rounded to the nearest ten is 5,880.

c. 45,288

________

Answer:

Given that the number is 45,288.

Here 8 is in ones place and 8 in tens place.

8 is greater than 5. so, replace 1 with 0 and add 1 to the tens place.

Therefore 45,288 rounded to the nearest ten is 45,288.

d. 975

________

Answer:

Given that the number is 975.

Here 5 is in ones place and 7 in tens place.

5 is greater than or equal to 5. so, replace 5 with 0 and add 1 to the tens place.

Therefore 975 rounded to the nearest ten is 980.

e. 13,936

________

Answer:

Given that the number is 13,936.

Here 6 is in ones place and 3 in tens place.

6 is greater than 5. so, replace 6 with 0 and add 1 to the tens place.

Therefore 13,936 rounded to the nearest ten is 13,936.

f. 842

________

Answer:

Given that the number is 842.

Here 2 is in ones place and 4 in tens place.

2 is less than 5. so, replace 2 with 0.

Therefore 842 rounded to the nearest ten is 840.

Question 2.

a. 9,855

________

Answer:

Given that the number is 9,855.

Here 5 is in ones place and 5 in tens place.

5 is greater than or equal to 5. so, replace 5 with 0 and 1 to the tens place.

Therefore 9,855 rounded to the nearest ten is 9,860.

b. 26,917

________

Answer:

Given that the number is 26,917.

Here 7 is in ones place and 1 in tens place.

7 is greater than 5. so, replace 7 with 0 and add 1 to the tens place.

Therefore 26.917 rounded to the nearest ten is 26,917.

c. 984

________

Answer:

Given that the number is 984.

Here 4 is in ones place and 8 in tens place.

4 is less than 5. so, replace 4 with 0.

Therefore 984 rounded to the nearest ten is 980.

d. 95,645

________

Answer:

Given that the number is 95,645.

Here 5 is in ones place and 4 in tens place.

5 is greater than or equal to 5. so, replace 5 with 0 and add 1 to the tens place.

Therefore 95,645 rounded to the nearest ten is 95,650.

e. 8,673

________

Answer:

Given that the number is 8,673.

Here 3 is in ones place and 7 in tens place.

3 is less than 5. so, replace 3 with 0.

Therefore 8,673 rounded to the nearest ten is 8,670.

f. 29,981

________

Answer:

Given that the number is 29,981.

Here 1 is in ones place and 8 in tens place.

1 is less than 5. so, replace 1 with 0.

Therefore 29,981 rounded to the nearest ten is 29,980.

**Round to the nearest hundred.**

Question 3.

a. 325, 793

________

Answer:

Given that the number is 325,793.

Here 9 in tens place and 7 in hundreds place.

90 is greater than 50. So replace 0 in ones and tens place, add 1 to the hundreds place.

Therefore 325,793 rounded to the nearest hundred is 325,700.

b. 49,832

________

Answer:

Given that the number is 49,832.

Here 3 in tens place and 8 in hundreds place.

80 is greater than 50. So replace 0 in ones and tens place, add 1 to the hundreds place.

Therefore 49,832 rounded to the nearest hundred is 49,800.

c. 123,652

________

Answer:

Given that the number is 123,652.

Here 5 in tens place and 6 in hundreds place.

00 is greater than or equal to 50. So replace 0 in ones and tens place, 1 to the hundreds place.

Therefore 123,652 rounded to the nearest hundred is 123,600.

d. 24,635

________

Answer:

Given that the number is 24,635.

Here 3 in tens place and 6 in hundreds place.

30 is less than 50. So replace 0 in ones and tens place.

Therefore 24,635 rounded to the nearest hundred is 24,600.

e. 199,794

________

Answer:

Given that the number is 199,794.

Here 9 in tens place and 7 in hundreds place.

90 is greater than 50. So replace 0 in ones and tens place, 1 to the hundreds place.

Therefore 199,794 rounded to the nearest hundred is 199,794.

f. 79,342

________

Answer:

Given that the number is 79,342.

Here 4 in tens place and 3 in hundreds place.

40 is less than 50. So replace 0 in ones and tens place.

Therefore 79,342 rounded to the nearest hundred is 79,300.

Question 4.

a.

798,759

________

Answer:

Given that the number is 798,759.

Here 5 in tens place and 7 in hundreds place.

50 is greater than or equal to 50. So replace 0 in ones and tens place, 1 to the hundreds place.

Therefore 798,759 rounded to the nearest hundred is 798,700.

b. 58,345

________

Answer:

Given that the number is 58,345.

Here 4 in tens place and 3 in hundreds place.

40 is less than 50. So replace 0 in ones and tens place.

Therefore 58,345 rounded to the nearest hundred is 58,300.

c. 9,873

________

Answer:

Given that the number is 9,873.

Here 7 in tens place and 8 in hundreds place.

70 is greater than 50. So replace 0 in ones and tens place.

Therefore 9,873 rounded to the nearest hundred is 9,800.

d. 8,375

________

Answer:

Given that the number is 8,375.

Here 7 in tens place and 3 in hundreds place.

70 is greater than 50. So replace 0 in ones and tens place, 1 to the hundreds place.

Therefore 8,375 rounded to the nearest hundred is 8,300.

e. 10,097

________

Answer:

Given that the number is 10,097.

Here 9 in tens place and 0 in hundreds place.

90 is greater than 50. So replace 0 in ones and tens place, 1 to the hundreds place.

Therefore 10,097 rounded to the nearest hundred is 10,000.

f. 1,987,654

________

Answer:

Given that the number is 1,987,654.

Here 5 in tens place and 6 in hundreds place.

50 is greater than or equal to 50. So replace 0 in ones and tens place, 1 to the hundreds place.

Therefore 1,987,654 rounded to the nearest hundred is 1,987,600.

**Round to the nearest thousand.**

Question 6.

a. 567,523

________

Answer:

Given that the number is 567,523.

Here 5 is in hundreds place and 7 in thousands place.

500 is greater than or equal to 500. So, replace 0 in ones, tens and hundreds place and add 1 to the thousands place.

Therefore 567,523 rounded to the nearest thousand is 567,000.

b. 93,567

________

Answer:

Given that the number is 93,567.

Here 5 is in hundreds place and 3 in thousands place.

500 is greater than or equal to 500. So, replace 0 in ones, tens and hundreds place and add 1 to the thousands place.

Therefore 93,567 rounded to the nearest thousand is 93,000.

c. 4,378

________

Answer:

Given that the number is 4,378.

Here 3 is in hundreds place and 4 in thousands place.

300 is less than 500. So, replace 0 in ones, tens and hundreds place.

Therefore 4,378 rounded to the nearest thousand is 4,000.

d. 12,499

________

Answer:

Given that the number is 12,499.

Here 4 is in hundreds place and 2 in thousands place.

400 is less than 500. So, replace 0 in ones, tens and hundreds place.

Therefore 12,499 rounded to the nearest thousand is 12,000.

e. 747,399

________

Answer:

Given that the number is 747,399.

Here 3 is in hundreds place and 7 in thousands place.

300 is less than 500. So, replace 0 in ones, tens and hundreds place.

Therefore 747,399 rounded to the nearest thousand is 747,000.

f. 9,385

________

Answer:

Given that the number is 9,385.

Here 3 is in hundreds place and 9 in thousands place.

300 is less than 500. So, replace 0 in ones, tens and hundreds place.

Therefore 9,385 rounded to the nearest thousand is 9,000.

Question 6.

a. 987,436

________

Answer:

Given that the number is 987,436.

Here 4 is in hundreds place and 7 in thousands place.

400 is less than 500. So, replace 0 in ones, tens and hundreds place.

Therefore 987,436 rounded to the nearest thousand is 987,000.

b. 346,345

________

Answer:

Given that the number is 346,345.

Here 3 is in hundreds place and 6 in thousands place.

300 is less than 500. So, replace 0 in ones, tens and hundreds place.

Therefore 346,345 rounded to the nearest thousand is 346,000.

c. 98,345

________

Answer:

Given that the number is 98,345.

Here 3 is in hundreds place and 8 in thousands place.

300 is less than 500. So, replace 0 in ones, tens and hundreds place.

Therefore 98,345 rounded to the nearest thousand is 98,000.

d. 8,564

________

Answer:

Given that the number is 8,564.

Here 5 is in hundreds place and 8 in thousands place.

500 is greater than or equal to 500. So, replace 0 in ones, tens and hundreds place and add 1 to the thousands place.

Therefore 8,564 rounded to the nearest thousand is 8,000.

e. 75,459

________

Answer:

Given that the number is 75,459.

Here 4 is in hundreds place and 5 in thousands place.

400 less than 500. So, replace 0 in ones, tens and hundreds place.

Therefore 75,459 rounded to the nearest thousand is 75,000.

f. 187,349

________

Answer:

Given that the number is 187,349.

Here 3 is in hundreds place and 7 in thousands place.

300 is less than 500. So, replace 0 in ones, tens and hundreds place.

Therefore 187,349 rounded to the nearest thousand is 187,000.