Multi-Part Lesson
Name
PART
A
B
7-3
C
D
Regroup Hundreds and Tens
Find 541 - 288.
Step 1 Look at the numbers
in the ones place. Can
you subtract 8 ones
from 1 one?
You need to regroup
1 ten as 10 tens.
Subtract the ones.
hundreds
3
Copyright © Macmillan/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
hundreds
tens
C07-027A-112053.ai
ones
11
�
Step 3 Look at the hundreds
place. Can you subtract
2 hundreds from
4 hundreds?
Subtract the
hundreds.
ones
�
Step 2 Now look at the tens
place. Can you subtract
8 tens from 3 tens?
You need to regroup
1 hundred as 10 tens.
Subtract the tens.
tens
hundreds
5
3
tens
ones
13
11
C07-028A-112053.ai
�
2
5
3
541 - 288 =
About It
1. Why do you regroup?
Chapter 7 • Lesson 3A
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three hundred thirteen
313
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and Apply It
Use base-ten blocks. Draw the blocks you used. Solve.
2. 623 - 447 =
3. 875 - 826 =
hundreds
tens
hundreds
ones
tens
ones
tens
ones
�
�
4. 303 - 199 =
hundreds
5. 412 - 158 =
tens
hundreds
ones
C07-013A-112053.ai
C07-013A-112053.ai
�
�
marblesC07-013A-112053.ai
7.
C07-013A-112053.ai
Write a subtraction story
problem using 762 and 185.
314
three hundred fourteen
313_314_CH07_L3A_112053.indd 314
Copyright © Macmillan/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
6. Sharice had 255 marbles. She lost 186 of the
marbles. How many marbles does she have now?
Chapter 7 • Lesson 3A
7/19/09 8:56:10 PM