## Math Expressions Common Core Grade 4 Unit 1 Lesson 5 Answer Key Compare and Round Greater Numbers

**Math Expressions Grade 4 Unit 1 Lesson 5 Homework**

**Compare using>, <,or =.**

Question 1.

57.068 57,860

Answer:

57068 < 57860.

Question 2.

24,516 24,165

Answer:

24,516 > 24,165.

Question 3.

154,424 145,424

Answer:

154,424 > 145,424.

Question 4.

836,245 683,642

Answer:

836,245 > 683,642.

Question 5.

89,175 89,175

Answer:

89,175 = 89,175.

Question 6.

100,000 1,000,000

Answer:

100,000 < 1,000,000.

**Round to the nearest ten thousand.**

Question 7.

11,295 __________

Answer:

Nearest ten thousand of 11295 = 11000.

Question 8.

82,964 __________

Answer:

Nearest ten thousand of 82964 = 80000.

Question 9.

97,079 __________

Answer:

Nearest ten thousand of 97079 = 100,000.

**Round to the nearest hundred thousand.**

Question 10.

153,394 __________

Answer:

Nearest hundred thousand of 153,394 = 200,000.

Question 11.

410,188 __________

Answer:

Nearest hundred thousand of 410,188 = 400,000.

Question 12.

960,013 __________

Answer:

Nearest hundred thousand of 960,013 = 1,000,000.

Question 13.

837,682 __________

Answer:

Nearest hundred thousand of 837,682 = 800,000.

**Solve.**

Question 14.

What would 672,831 be rounded to the nearest:

a. ten? __________

Answer:

672,831 rounded to the nearest ten = 672,830.

b. hundred? ___________

Answer:

672,831 rounded to the nearest hundred =672,800.

c. thousand? __________

Answer:

672,831 rounded to the nearest thousand =673,000.

d. ten thousand? ___________

Answer:

672,831 rounded to the nearest ten thousand = 670,000.

e. hundred thousand? ___________

Answer:

672,831 rounded to the nearest hundred thousand = 700,000.

Question 15.

Compare the number 547,237 rounded to the nearest hundred thousand and 547,237 rounded to the nearest ten thousand. Which is the greater number? Write a comparison statement and explain your answer.

Answer:

Greatest number is 547,237 rounded to the nearest ten thousand.

Explanation:

547,237 rounded to the nearest hundred thousand = 500,000.

547,237 rounded to the nearest ten thousand = 550,000.

Greatest number is 547,237 rounded to the nearest ten thousand.

Comparison statement:

547,237 rounded to the nearest hundred thousand < 547,237 rounded to the nearest ten thousand

=> 500,000 < 550,000.

**Math Expressions Grade 4 Unit 1 Lesson 5 Remembering**

**Find the unknown value in the number sentence.**

Question 1.

8 × k = 16 k = _________

Answer:

8 × k = 16 k

=>. k = 16k ÷ 8

=> k = 2k.

Hence, 8 × 2k = 16k.

Question 2.

n × 9 = 90 n = _________

Answer:

n × 9 = 90 n

=>. n = 90 n ÷ 9

=> n = 10 n.

Hence, 10n × 9 = 90n.

Question 3.

35 ÷ t = 5 t = ________

Answer:

35 ÷ t = 5 t

=> 35 ÷ 5t = t

=> 7t = t.

Hence 35 ÷ 7t = 5t.

Question 4.

p ÷ 6 = 9 p = _________

Answer:

p ÷ 6 = 9 p

=> p = 9p × 6

=> p = 54p.

Hence, 54p ÷ 6 = 9p.

**Solve.**

Question 5.

In an arcade game, Nick can earn up to 10 tickets, depending on which slot his coin goes through. If he plays the game six times, what is the greatest number of tickets Nick could earn?

Answer:

Greatest number of tickets Nick could earn = 60.

Explanation:

Number of tickets Nick can earn = 10.

Number of times if he plays = 6.

Greatest number of tickets Nick could earn = Number of tickets Nick can earn × Number of times if he plays

= 10 × 6

= 60.

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

Question 6.

2,950 ___________

Answer:

Nearest thousand of 2950 = 3000.

Question 7.

4,307 ___________

Answer:

Nearest thousand of 4307 = 4000.

**Read and write each number in word form.**

Question 8.

16,977 ___________

Answer:

Word form of 16,977 = Sixteen thousand, nine hundred seventy seven.

Question 9.

403,056 ___________

Answer:

Word form of 403,056 = Four lakh, three thousand fifty six.

Question 10.

**Stretch Your Thinking** Leon says that he can compare numbers in the same way that he alphabetizes words. For example, since the first two letters of cat and cane are the same, he goes to the next letter to compare. Since n comes before t in the alphabet, the word cane comes first in a dictionary. To compare 64,198 with 641,532, he knows that the first three digits 641 are the same. Then he compares the next digit in each number. Since 9 is greater than 5, the number 64,198 must be greater. Is Leon’s way of thinking correct? Explain.

Answer:

No. Leon is not correct because rounding numbers nearest to their places the result changes.

Explanation:

64,198 and 641,532 first three digits are same yet their is difference in number digits place values.