Name
TOPIC
1
Set A pages 9–14
You can use place-value blocks to show 1,324.
Remember that place value
is the value of the place a digit
has in a number.
Reteaching
Write each number in standard form.
Use place-value blocks to help.
1 thousand 3 hundreds 2 tens 4 ones
1.
Write the number in standard form.
1,324
Write the number in expanded form.
1,000 + 300 + 20 + 4
Write the number in word form.
one thousand, three hundred twenty-four
2. 3,000 + 500 + 40 + 2
3. five thousand, six hundred twelve
Set B pages 15–20
You can name 1,500 in different ways.
Remember that place value can be used to
name numbers in different ways.
Name each number in four ways. Use
place-value blocks to help.
1.
one thousand, five hundreds
fifteen hundreds
2. 6,500
You can name 1,500 using only tens.
one hundred fifty tens
You can name 1,500 using only ones.
one thousand, five hundred ones
3. 1,800
Topic 1 Reteaching
65
Set C pages 21–26
Remember that a period is a group of 3
digits in a number, starting from the right.
Two periods are separated by a comma.
You can use a place-value chart to
show 52,793.
riod
od
s pe
peri
ones
nd
ousa
Write each number in standard and
expanded forms.
hu
nd
re
te
d
n
th thou
s
on ous
an and
e
th
s
d
s
ou
hu
sa
nd
n
re
ds
te
ns ds
on
es
th
5
2, 7
9
1. eight thousand, two hundred ten
2. ten thousand, six hundred twelve
3
3. thirty-two thousand, one hundred
twenty-two
standard form:
52,793
4. fifty-one thousand, six hundred
ninety-five
expanded form:
50,000 + 2,000 + 700 + 90 + 3
word form:
fifty-two thousand, seven hundred
ninety-three
5. twenty-two thousand, four hundred
eleven
Set D pages 27–32
In the number 2,200, what is the relationship
between the values of the digit 2 in each
place?
Remember that when two digits next to
each other in a number are the same, the
value of the digit on the left is always 10 times
as great as the value of the digit on the right.
Name the values of the given digits.
1. the 3s in 1,338
2,000
200
The first 2 is in the thousands place.
Its value is 2,000.
2. the 5s in 5,562
3. the 8s in 88,376
4. the 4s in 12,644
The second 2 is in the hundreds place.
Its value is 200.
5. the 2s in 92,264
2,000 is ten times as much as 200.
7. the 8s in 68,800
6. the 6s in 6,615
8. the 7s in 770,053
66
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Name
TOPIC
1
Set E pages 33–38
You can use a number line to compare 242
and 244.
241
240
242
243
244
245
On the number line, 242 is to the left of 244.
So, 242 is less than 244.
○ 535
3. 5,358 ○ 5,158
Set F pages 39–44
You can use a place-value chart to order
numbers.
sand
s
s
dred
hun
s
tens
6
5
0
5,
2
7
9
5,
2
3
5
4,5
252
So, 4,650
is the least
number.
Continued
○ 1,686
4. 34,674 ○ 34,392
2. 1,679
Remember that when you order numbers,
you write them from greatest to least or from
least to greatest.
In 1 and 2, order the numbers from least
to greatest.
one
4,
Reteaching
Write 7 , 6 , or = in the circle to make
the statement true.
1. 532
242 6 244
thou
Remember that you can use
symbols to compare numbers:
6 is less than, 7 is greater than,
and = is equal to.
1. 1,172 1,1272,053
2. 42,316 42,42641,601
In 3 and 4, order the numbers from greatest
to least.
7.3
So, 5,279
is the greatest
number.
3. 5,672 5,7955,612
4. 78,342 78,23479,123
The numbers from greatest to least are:
5,2795,2354,650
Set G pages 45–50
Remember that when counting money,
count on from the greatest to the least value.
Count on to find the total value.
Write the total value in dollars and cents.
$1.00
$1.25
$1.35
$1.40
1.
2. 2 one-dollar bills, 1 quarter, 2 dimes
$1.00
$2.00
Topic 1 Reteaching
67
Set H pages 51–56
Remember that if a number is halfway
between, round to the greater number.
You can use a number line to round.
437
435
430
440
Nearest ten: 437 rounds to 440.
437
450
400
500
Nearest hundred: 437 rounds to 400.
4,370
5,000
Nearest thousand: 4,370 rounds to 4,000.
43,700
45,000
40,000
2. Sara collected 281 shells. Rounded to the
nearest hundred, about how many shells
did she collect?
3. Round 5,218 to the nearest thousand.
4,500
4,000
1. Mark’s family traveled 563 miles to visit his
cousin. Rounded to the nearest ten miles,
about how many miles did they travel?
50,000
Nearest ten thousand: 43,700 rounds to
40,000.
4. Round 21,942 to the nearest ten thousand.
5. Drake’s mother flew 89,214 miles
last year. Rounded to the nearest ten
thousand miles, about how many miles
did Drake’s mother fly?
Set I pages 57–62
Good written explanations communicate
your reasoning to others.
Remember that a good explanation is correct,
simple, complete, and easy to understand.
1. Write to explain how to round 650 to the
nearest hundred on a number line.
Use digital tools to
solve this and other
Reteaching problems.
A place-value chart can help you explain
why the value of the digit 3 in 3,284 is 3,000.
sand
thou
3,
s
s
dred
hun
2
2. Harry used the digits 4, 7, 9, and 3 to
write the least number possible. He
wrote 4,379. Explain why the answer
Harry wrote is incorrect.
s
tens
one
8
4
The digit 3 is in the thousands place.
So, it has a value of 3,000.
68
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