Envision Math 4th Grade Textbook Answer Key Topic 1 Reteaching
Set A, pages 4-6,8-9
Use a place-value chart to write the expanded Remember that periods can help form and word form of 26,500.
Expanded form: 20,000 + 6,000 + 500
Word form: twenty-six thousand, five hundred
Remember that periods can help you read large numbers. Use place-value charts to write each number in expanded form and word form.
Question 1.
7,549
Answer:
Question 2.
27,961
Answer:
Question 3.
321,209
Answer:
Question 4.
3,454
Answer:
Question 5.
6,792,365
Answer:
Question 6.
15,164,612
Answer:
Question 7.
413,109,657
Answer:
Question 8.
83,251
Answer:
Question 9.
4,806
Answer:
Question 10.
6,138,405
Answer:
Set B, pages 10–13
Write > or < for each .
45,423 44,897
Step 1
Use place value to compare.
Step 2
Start comparing from the left.
Step 3
Look for the first digit that is different.
45,423
44,897
5 > 4
So, 45,423 > 44,897.
Remember that a number line can be used to compare numbers. Write > or < for each .
Question 1.
11,961 12,961
Answer:
Question 2.
23,901 23,899
Answer:
Question 3.
42,661,907 42,659,824
Answer:
Question 4.
735,291,000 735,291,001
Answer:
Question 5.
6,103,582 6,130,449
Answer:
Question 6.
462,918 461,349
Answer:
Question 7.
8,457 8,451
Answer:
Question 8.
163,492,708 163,492,807
Answer:
Question 9.
38,605 38,650
Answer:
Question 10.
871,943 871,934
Answer:
Set C, pages 14-15
Use expanded form to compare and order numbers. Which is greater, 3,500 or 3,005? 3,500 = 3,000 + 500 3,005 = 3,000 + 5 500 > 5
So, 3,500 > 3,005.
Write the numbers from greatest to least.
3,050 3,005 3,500
Write the numbers in expanded form.
3,050 = 3,000 + 50
3,005 = 3,000 + 5
3,500 = 3,000 + 500
500 > 50 > 5
So, 3,500 > 3,050 > 3,005.
Remember to use a place-value chart to help compare and order numbers.
Write each number in expanded form. Then, copy and complete by writing > or < for each .
Question 1.
8,500 8,005
Answer:
Question 2.
2,002 2,020
Answer:
Question 3.
3,600 3,006
Answer:
Question 4.
7,004 7,040
Answer:
Order the numbers from greatest to least.
Question 5.
1,009 1,900 1,090
Answer:
Question 6.
6,008 6,800 6,080
Answer:
Set D, pages 16-17
Using only hundreds and tens blocks, how many ways can you make 440?
Record the combinations using an organized list.
Remember that the way you organize a list can help you find all the possibilities in a problem.
Solve. Make an organized list to help you.
Question 1.
A game has yellow, red, black, and green counters. How many 2-color combinations can you make?
Answer:
Question 2.
Troy collects plastic banks. He has three different plastic banks: a pig, a cow, and a frog. How many ways can he arrange his banks on a shelf?
Answer: