Add To with Change Unknown Problems
Lesson Plans and Worksheets for Grade 1
Lesson Plans and Worksheets for all Grades
More Lessons for Grade 1
Common Core For Grade 1
Eureka Math/EngageNY grade 1 module 2 lesson 23 Worksheets
New York State Common Core Math Grade 1 Module 2, Lesson 23
Eureka Math grade 1 module 2 lesson 23 Worksheets (pdf)
Worksheets, solutions, and videos to help Grade 1 students learn how to solve add to with change unknown problems, relating varied addition and subtraction strategies.
Common Core Standards: 1.OA.1, 1.OA.3, 1.OA.4, 1.OA.6, 1.OA.5, 1.OA.7. 1.OA.8
Lesson 23 Concept Development
Learning goal: I can solve for the unknown by using addition and subtraction strategies.
In the morning, there were 8 leaves on the floor under the ficus tree. During the day, more leaves fell on the floor. Now there are 13 leaves on the floor. How many leaves fell during the day?
Read the word problem.
Draw and label.
Write a number sentence and a statement that matches the story.
Shanika ate 7 mini-pretzels in the morning. She ate the rest of her mini-pretzels in
the afternoon. She ate 13 mini-pretzels altogether that day. How many mini-pretzels
did Shanika eat in the afternoon? Lesson 23 Homework
1. Micah collected 9 pinecones on Friday and some more on Saturday. Micah collected a total of 14 pinecones. How many pinecones did Micah collect on Saturday?
2. Giana bought 8 star stickers to add to her collection. Now she has 17 stickers in all. How many stickers did Giana have at first?
3. Samil counted 5 pigeons on the street. Some more pigeons came. There were 13 pigeons in all. How many pigeons came?
4. Claire had some eggs in the fridge. She bought a dozen more eggs. Now she has 18 eggs in all. How many eggs did Claire have in the fridge at first?
Check out our most popular games!
Fraction Concoction Game:
Master fractions in the lab: mix, add, and subtract beakers to create the perfect concoction!
Fact Family Game:
Complete fact families and master the link between addition & subtraction and multiplication & division.
Number Bond Garden:
Clear the board by matching number pairs that sum to ten in this garden-themed mental math puzzle.
Online Addition Subtraction Game:
Practice your addition and subtraction skills to help the penguin find its mummy.
Penguin Solitaire:
Move all cards to the foundations to build four full sequences. There are two versions here: Penguin (Tuxedo) and Penguin (Original).
Sawayama Solitaire:
This is similar to the common Klondike Solitaire except for a few changes to make it more strategic.
Check out more Solitaire games here.
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