G1 U10 L2 SJ

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Applied MP

MPs * Embedded MP

Procedural Lesson Grade 1 · Unit 10 · Lesson 2

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MC: 1.OA.1

unknown.

Today, I will use objects to solve word problems with the difference

Vocabulary

Steps

Take From Difference Unknown – Word Problems:

1. Listen carefully to the numbers in the word problem.

There were 6 kids at recess. 4 kids ran away. How many kids are left?

2. Use the numbers to write an equation using a symbol or letter to represent the unknown. 3. Solve for the unknown.

6-4=X Unknown

X=2

Copyright © Swun Math

Grade 1 Unit 10 Lesson 2 P SJ

/ Directions: Listen to the following word problems. Solve for the unknown.

1. There were 4 owls in a tree. 3 flew away. How many owls are left?

Equation

Y= 2. There were 10 star stickers. 5 got lost. How many star stickers are left?

Equation

= MP2: What math symbol did you use today? MP6: How do you know your answers are correct? MP7: What steps helped you solve the problems? Copyright © Swun Math

Grade 1 Unit 10 Lesson 2 P SJ

Directions: Listen to the following word problems. Solve for the unknown.

1. Kaia picked 7 flowers. 4 flowers got lost. How many flowers are left?

Equation

= 2. Cameron had 9 boxes. He gave them all to his brother. How many boxes are left?

Equation

T= MP2: What math symbol did you use today? MP6: How do you know your answers are correct? MP7: What steps helped you solve the problems?

Copyright © Swun Math

Grade 1 Unit 10 Lesson 2 P SJ

Name: ____________________________ Directions: Listen to the following word problems. Solve for the unknown.

Date: ______________________________

1. Lupe had 6 stickers. She lost 3. How many stickers are left?

Equation

= 2. There were 6 books. One book got lost. How many books are left?

Equation

= 3. There were 8 whales. 6 whales swim away. How many whales are left?

Equation

X= Copyright © Swun Math

Grade 1 Unit 10 Lesson 2 P SJ

Directions: Listen to the following word problems. Solve for the unknown.

4. There were 9 donuts. 3 were eaten. How many donuts are left?

Equation

Y= 5. There were 8 frogs in the pond. 5 frogs hop away. How many frogs are left?

Equation

= 6. There were 10 hens. 6 fly away. How many hens are left?

Is Z = 8 correct? If not, solve for the unknown

Yes

No

Equation

Z= Copyright © Swun Math

Grade 1 Unit 10 Lesson 2 P SJ

Directions: Listen to the word problems. Draw objects to solve them.

1. There were 10 pieces of gum. Kids ate 4 of the pieces of gum. How many pieces of gum are left? Drawings:

Y=

Equation

2. There were 6 soccer balls. Four balls got lost. How many soccer balls are left? Drawings:

=

Equation

*MP3: Do you agree/disagree with what

said?

*MP6: How do you know your answers are correct/reasonable?

Recap today’s lesson with one or more of the following MP questions: MP2: What math symbol did you use today? MP6: How did you know your answers were correct? MP7: What steps helped you solve the problems?

Copyright © Swun Math

Grade 1 Unit 10 Lesson 2 P SJ