# Solve Equivalent Expressions

Videos to help Grade 1 students learn how to strategize and apply understanding of the equal sign to solve equivalent expressions.

Common Core Standards: 1.OA.1, 1.OA.3, 1.OA.4, 1.OA.6, 1.OA.5, 1.OA.7. 1.OA.8

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Lesson Plans and Worksheets for Grade 1

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## New York State Common Core Math Module 2, Grade 1, Lesson 25

### NYS Math Module 2 Grade 1 Lesson 25

Lesson 25 Application Problem

Micah had 16 trucks and lost 9 of them. Charles had 1 truck and received 6 more trucks from his mother. Who has more trucks, Micah or Charles?
Lesson 25 Exit Ticket

You are given these new expression cards. Write matching expressions to make true
number sentences.

8 + 9, 12 - 7, 19 - 2, 2 + 15

3 + 2, 10 + 7, 14 - 9, 1 + 4

Lesson 25 Homework

1. Circle "true" or "false".
a. 2 + 3 = 5 + 1
b. 7 + 9 = 6 + 10
2. Lola and Charlie are using expression cards to make true number sentences. Use pictures and words to show who is right.
a. Lola picked 4 + 8 and Charlie picked 9 + 3. Lola says these expressions are equal but Charlie disagrees. Who is right? Explain your thinking
3. The following addition number sentences are False. Change one number in each problem to make a True number sentence, and rewrite the number sentence.