# Contents

1. Section A: Add Without Making a Ten
1. Warm-up: How Many Do You See: 10-frames
2. 1.1: What Did I Add?
3. 1.2: Add Tens or Ones
1. 2.1: Find the Value
2. 2.2: Elena and Andre Represent 63 + 25
1. Warm-up: Number Talk: Add More Tens
2. 3.1: Lin and Han Add
3. 3.2: I Heard You Say
4. Section A Summary
1. Warm-up: Notice and Wonder: Marbles
2. 4.2: Centers: Choice Time
3. Section A Practice Problems
2. Section B: Make a Ten: Add One- and Two-digit Numbers
1. Warm-up: How Many Do You See: Many 10-frames
2. 5.1: Choose a Way to Add
3. 5.2: Add ‘Em Up Partner
4. 5.3: Tyler’s Teacher
1. Warm-up: Number Talk: Add Within 20
2. 6.1: How Many to the Next Ten?
3. 6.2: Elena and Andre Add
1. Warm-up: Which One Doesn’t Belong: Expressions
2. 7.1: A Ten or Not a Ten?
3. 7.2: Missing Numbers
4. Section B Summary
1. Warm-up: Number Talk: Add Within 100
2. 8.2: Centers: Choice Time
4. Section B Practice Problems
3. Section C: Make a Ten: Add Within 100
1. Warm-up: Number Talk: Make a Ten
2. 9.1: How Did You Find the Value?
1. Warm-up: How Many Do You See: Tens and Ones
2. 10.1: Priya‘s Work
3. 10.2: Finish the Work
1. Warm-up: True or False: Add to a Two-digit Number
2. 11.1: How Much Litter?
1. Warm-up: Number Talk: Make a Ten
2. 12.1: Add Two-digit Numbers Within 100