## Envision Math 5th Grade Textbook Answer Key Topic 1 Reteaching

**Reteaching**

**Set A, pages 4-5**

Write the word form and tell the value of the underlined digit for 930,365.

Nine hundred thirty thousand, three hundred sixty-five.

Since the 0 is in the thousands place, its value is 0 thousands or 0.

Write the word form and tell the value of the underlined digit for 65,467,386,941.

Sixty-five billion, four hundred sixty-seven million, three hundred eighty-six thousand, nine hundred forty-one

Since the 6 is in the ten billions place, its value is 60,000,000,000.

Remember that, starting from the right, each group of three digits forms a period. Periods are separated by commas.

Write the word form and tell the value of the underlined digit.

Question 1.

__9__,000,009

Answer:

Question 2.

__3__00,000,000,000

Answer:

Question 3.

2__5__,678

Answer:

Question 4.

__1__7,874,000,000

Answer:

Question 5.

__4__,000,345,000

Answer:

Question 6.

1__0__5,389

Answer:

Question 7.

__8__76,400,000,00

Answer:

Question 8.

__6__00,309,470

Answer:

Question 9.

13__5__,000

Answer:

Question 10.

2,__6__47,000

Answer:

Question 11.

4,1__0__4,327,894

Answer:

**Set B, pages 6-8**

Write <, >, or = for in

2,876,547 2,826,547.

Line up the numbers above one another.

2,8__7__6,547 Begin at the left and compare.

2,8__2__6,547 Notice that the ten thousands are different.

7 ten thousands > 2 ten thousands

So, 2,876,547 > 2,826,547

Remember that lining up place values helps you compare numbers.

Question 1.

9,990 9,099

Answer:

Question 2.

89,128 90,000

Question 3.

1,000,000 999,999

Question 4.

300,300 303,000

Answer:

Question 5.

6,752,100 6,752,000

Answer:

Question 6.

9,314 9,314

Answer:

Question 7.

17,320 17,212

Answer:

Question 8.

45,006 45,060

Answer:

Question 9.

22,009 22,090

Answer:

Question 10.

145,372 147,372

Answer:

Question 11.

8,374 8,374

Answer:

**Set C, pages 10-11**

write the word form and tell the value of the underlined digit for the number 8.726. Write the numbers on a place value chart.

Eight and seven hundred twenty-six thousandths

The 2 is in the hundredths place. Its value is 0.02

Remember to write the word and for the decimal point.

Question 1.

8.__5__9

Answer:

Question 2.

2.2__5__1

Answer:

Question 3.

7.00__3__

Question 4.

3.__2__4

Answer:

Question 5.

6.8__3__7

Answer:

Question 6.

0.63__6__

Answer:

**Set D, pages 12-13**

Write <, >, or = for in

8.45 8.47.

Line up the numbers above each other by the decimals.

8.4__5__

8.4__7__

5 hundredths < 7 hundredths

So, 8.45 < 8.47

Remember that equivalent decimals, such as 0.45 and 0.450, can help you compare numbers.

Question 1.

0.584 0.58

Answer:

Question 2.

9.327 9.236

Answer:

Question 3.

5.2 5.20

Answer:

Question 4.

5.643 5.675

Answer:

Question 5.

0.07 0.08

Answer:

Question 6.

3.602 3.062

Answer:

**Set E, pages 14-16**

The table below shows the number of new members each month for a club. If the pattern continues, how many new members will there be in June?

Pattern: The number doubles each month.

May: 120 × 2 × 240

June: 240 × 2 × 480

In June, there will be 480 new members

Remember to look for a pattern.

Question 1.

On the board, Andrea’s teacher wrote the pattern below. Find the next three numbers in the pattern.

Question 2.

Sean bought a rare stamp for $15. He was told that it would increase in value by $11 each year. What will the stamp’s value be after 4 years?

Answer: