Name: 2nd Grade
Topic: 2-Digit Addition U2 LEQ2
Learning Goals for this Lesson:
Students Will Know:
Strategies to add up to four two-digit
Strategies to add and subtract using place value
How to add and subtract fluently within 1000
How to solve one- and two-step word problems
Standards: MAFS.2.NBT.2.6 MAFS.2.NBT.2.9
MAFS.2.NBT.2.5 MAFS.2.OA.1.1
Students Will Be Able To:
Add up to four two-digit numbers using strategies based
on place value and properties of operation
Addition and subtraction strategies work, using place
value and the properties of operation
Fluently add and subtract within 1000
Addition and subtraction within 100 to solve one- and
two-step word problems
Lesson Essential Question:
What approach could you use to solve multi-digit addition problem?
Activating Strategy:
Brain Pop regrouping addition and subtraction
Key Vocabulary to Preview and Vocabulary Strategy:
Sum, addends, tens, ones, hundreds, digit, estimation, regroup
Lesson Instruction:
Learning Activity 1
Chapter 4 Lesson 1-5, 11-12
 4.1 Break Apart Ones to Add
HOT: Jamal has a box with some toy cars in it. He puts 3 more toy
cars into the box. Now there are 22 toy cars in the box. How many
toy cars were in the box before?
 4.2 Use Compensation
HOT: The chart shows the leaves that Philip collected. He wants a
collection of 52 leaves, using only two colors. Which two colors of
leaves should he use?
 4.3 Break Apart Addends as Tens and Ones
HOT: Christopher has 35 baseball cards. The rest of his cards are
basketball cards. He has 58 cards in all. How many basketball cards
does he have?
 4.4 Model Regrouping for Addition
HOT: Tim has 36 stickers. Margo has 44 stickers. How many more
stickers would they need to have 100 stickers altogether?
 4.5 Model and Record 2-Digit Addition
HOT: Chris and Bianca got 80 points in all in the spelling contest.
Each child got more than 20 points. How many points could each
child have gotten?
 4.11 Find Sums for 3 Addends
HOT: Write a story problem that could be solved using this number
sentence. 28+__=40.
 4.12 Find Sums for 4 Addends
HOT: Which two children collected more shells at the beach, Katie
and Paul, or Noah and Laney?
Assessment Prompt for LA 1:
Graphic Organizer:
Teachers pay Teachers
Regrouping 2-Digit
Addition/Subtraction Row House
Graphic Organizer Pack Gr 1 2
What are some ways to add 4 numbers?
Learning Activity 2
Chapter 4 Lesson 6-8
 4.6 2-Digit Addition
 HOT: Abby used a different way to add. Find the sum, using Abby’s
way.
 4.7 Practice 2-Digit Addition
 HOT: Without find the sums, circle the pairs of addends for which
the sum will be greater than 100. Explain how you decided which
pairs to circle.
 4.8 Rewrite 2-Digit Addition
 HOT: Which two players scored 56 points in all? Add to check your
answer.
Assessment Prompt for LA 2:
What are two different ways to write addition problems?
Learning Activity 3:
Chapter 4 Lesson 9-10
 4.9 Addition
 HOT: Alicia drew 15 flowers. Marie drew 4 more flowers than Alicia
drew. How many flowers did they draw?
 4.10 Write Equations to Represent Addition
 HOT: Mr. Walton baked 54 cookies last week. He baked 38 cookies
this week. How many cookies did he bake in the two weeks?
Assessment Prompt for LA 3:
How do you write a number sentence to represent a problem?
Assignment:
Divide children into small groups and
give each group a set of base-ten
blocks. If you do not have enough
sets, print out base ten block
drawings from the Internet and cut
them apart for students. Then, have
one student in each group show a
large number using only ones cubes.
Other group members can discuss
how to regroup the ones. Remind
students that when they regroup,
they gather ten ones to make one
group of ten. Have students trade in
10 cubes for a rod. Then have one
person in each group write the
number represented by the base-ten
blocks. Have students swap roles and
regroup different numbers.
Summarizing Strategy:
Ticket out the door, Math journal: What approach could you use to solve multi-digit addition problem?