G1 U10 L9 TE
Applied MP
MPs * Embedded MP
Procedural Lesson Grade 1 · Unit 10 · Lesson 9
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MC: 1.OA.1 Student Journal Pages
121-126
Today, I will solve word problems with the unknown in any position.
Vocabulary Take From: Difference Unknown There were 6 kids at recess. 4 kids ran away. How many kids are left?
6-4=X Take From: Start Unknown There were some horses in a field. Six horses ran away, and now there are 3 horses. How many horses were in the field to begin with?
W-6=3 Take From: Change Unknown There were 7 kids at the park. Some kids ran home. There is 1 kid left. How many kids ran home?
Teacher Resources Considerations: Students need to be exposed to many ways to represent the unknown (empty box, letters, and symbols). Steps: 1. Listen carefully to the numbers in the word problem. 2. Use the numbers to write an equation using a symbol or letter to represent the unknown. 3. Solve for the unknown.
Application of MPs: MP2: What math symbol can you use today? MP6: How do you know your answers are correct? MP7: What steps help you solve the problems?
7-X=1
Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
Answer Key: I/M
SGP
FCU
SP
1. 10 - =3 , 10-3= 7
1. 14-9= Y, Y= 5
1. 12-W= 8, 12 - 8=4
1. - 6= 5 , 6+ 5= 11
=7
2. R- 9= 9, 9 +9=18
W= 4
2.
R= 18
2. 9- 8=
-10= 2, 2+10=12
CH
HW
1. 30 - =10 =20 1. 18- T= 9, 18 – 9 =9
=11
=1
T= 9
2. 14- 5= X , X= 9
2. 40 – 10 = W W=30
2. 15 - =9 , 15- 9= 6 =6
= 12
3. 11 – = 3, 11-3= 8 =8
3. Z-2= 9, 9+ 2=11 Z= 11
4. Z-7= 7, 7 + 7=14
4. 16- 7= =9
Z= 14
5. 11- 8 =K
6. No; = 8
K= 3
5. Yes
6. 30-Y= 20 30- 20 = 10 Y= 10
Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
/ *MP1: Make sense of the problem and persevere in solving it! *MP8: Find a strategy to help solve the problem. Directions: Write the equation and solve for the unknown.
1. Liz has 10 pieces of candy. She eats some and has 3 pieces left. How many pieces did she eat?
= 2. There are some pieces of cake. Kids eat 9 pieces and now there are only 9 pieces left. How many pieces of cake were there to begin with?
= 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 9 P TE
/ Directions: Write the equation and solve for the unknown.
1. Ken had 14 stickers. He gives 9 to his friends. How many stickers are left?
Y=
2. There are books on a shelf. Kids take 10 books and now there are only 2 books left. How many books were on the shelf to begin with?
= 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 9 P TE
Directions: Write the equation and solve for the unknown.
1. There were 12 flowers. Some flowers got lost and now there are only 8 flowers left. How many flowers were lost?
W= 2. Katie had 9 star stickers. She gave 8 to Emma. How many stickers are left?
=
Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
Name: ____________________________ Directions: Write the equation and solve for the unknown.
Date: ______________________________
1. There are birds sitting in a tree. Six birds fly away and now there are 5 birds left. How many birds were in the tree to begin with?
= 2. Abby had 14 dolls. Five were broken. How many dolls were not broken?
X= 3. Josh threw 11 baseballs. Some went over the fence and now he has 3 baseballs. How many baseballs went over the fence?
= Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
Directions: Write the equation and solve for the unknown.
4. There were some apples growing on a tree. Seven apples were picked and now only 7 apples are left. How many apples were on the tree at the beginning?
Z= 5. Christian had 11 dimes. Eight dimes rolled away. How many dimes are left?
K= 6. Can = 10? If not, solve for the unknown. James had 9 games. He lent some to his friend and now he has 1 left. How many games did he lend to his friend?
= 10
Yes
No
= Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
Directions: Write the equation and solve for the unknown.
1. Grant had 30 books. He lent some to his friend and now he has 10 left. How many books did he lend to his friend?
= 2. Elle has 40 stickers. She gives 10 to her friends. How many stickers are left?
W= *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 9 P TE
Name: ____________________________ Directions: Write the equation and solve for the unknown.
Date: ______________________________
1. Alex had 18 cookies. His family ate 9 cookies. How many cookies are left?
T= 2. There were 15 dogs outside. Some dogs went inside and there are 9 dogs still outside. How many dogs went inside?
= 3. Gillian wore lots of bracelets to school. She lost 2, and now she only has 9 left. How many bracelets did she begin with?
Z= Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
Directions: Write the equation and solve for the unknown.
4. Jack has 16 books. He finishes reading 7 books. How many books are left for Jack to read?
= 5. Can = 14? If not, solve for the unknown. Anh bought erasers. She lost 6 on the way home and now only has 8 left. How many erasers did she buy?
= 14
Yes
No
= 6. Drew has 30 gumballs. He gives some to his sister, and now he has 20 left. How many gumballs did he give to his sister?
Y= Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
MPs * Embedded MP
Procedural Lesson Grade 1 · Unit 10 · Lesson 9
1
2
3
4
*
*
*
5
6
7
8
*
*
MC: 1.OA.1 Student Journal Pages
121-126
Today, I will solve word problems with the unknown in any position.
Vocabulary Take From: Difference Unknown There were 6 kids at recess. 4 kids ran away. How many kids are left?
6-4=X Take From: Start Unknown There were some horses in a field. Six horses ran away, and now there are 3 horses. How many horses were in the field to begin with?
W-6=3 Take From: Change Unknown There were 7 kids at the park. Some kids ran home. There is 1 kid left. How many kids ran home?
Teacher Resources Considerations: Students need to be exposed to many ways to represent the unknown (empty box, letters, and symbols). Steps: 1. Listen carefully to the numbers in the word problem. 2. Use the numbers to write an equation using a symbol or letter to represent the unknown. 3. Solve for the unknown.
Application of MPs: MP2: What math symbol can you use today? MP6: How do you know your answers are correct? MP7: What steps help you solve the problems?
7-X=1
Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
Answer Key: I/M
SGP
FCU
SP
1. 10 - =3 , 10-3= 7
1. 14-9= Y, Y= 5
1. 12-W= 8, 12 - 8=4
1. - 6= 5 , 6+ 5= 11
=7
2. R- 9= 9, 9 +9=18
W= 4
2.
R= 18
2. 9- 8=
-10= 2, 2+10=12
CH
HW
1. 30 - =10 =20 1. 18- T= 9, 18 – 9 =9
=11
=1
T= 9
2. 14- 5= X , X= 9
2. 40 – 10 = W W=30
2. 15 - =9 , 15- 9= 6 =6
= 12
3. 11 – = 3, 11-3= 8 =8
3. Z-2= 9, 9+ 2=11 Z= 11
4. Z-7= 7, 7 + 7=14
4. 16- 7= =9
Z= 14
5. 11- 8 =K
6. No; = 8
K= 3
5. Yes
6. 30-Y= 20 30- 20 = 10 Y= 10
Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
/ *MP1: Make sense of the problem and persevere in solving it! *MP8: Find a strategy to help solve the problem. Directions: Write the equation and solve for the unknown.
1. Liz has 10 pieces of candy. She eats some and has 3 pieces left. How many pieces did she eat?
= 2. There are some pieces of cake. Kids eat 9 pieces and now there are only 9 pieces left. How many pieces of cake were there to begin with?
= 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 9 P TE
/ Directions: Write the equation and solve for the unknown.
1. Ken had 14 stickers. He gives 9 to his friends. How many stickers are left?
Y=
2. There are books on a shelf. Kids take 10 books and now there are only 2 books left. How many books were on the shelf to begin with?
= 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 9 P TE
Directions: Write the equation and solve for the unknown.
1. There were 12 flowers. Some flowers got lost and now there are only 8 flowers left. How many flowers were lost?
W= 2. Katie had 9 star stickers. She gave 8 to Emma. How many stickers are left?
=
Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
Name: ____________________________ Directions: Write the equation and solve for the unknown.
Date: ______________________________
1. There are birds sitting in a tree. Six birds fly away and now there are 5 birds left. How many birds were in the tree to begin with?
= 2. Abby had 14 dolls. Five were broken. How many dolls were not broken?
X= 3. Josh threw 11 baseballs. Some went over the fence and now he has 3 baseballs. How many baseballs went over the fence?
= Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
Directions: Write the equation and solve for the unknown.
4. There were some apples growing on a tree. Seven apples were picked and now only 7 apples are left. How many apples were on the tree at the beginning?
Z= 5. Christian had 11 dimes. Eight dimes rolled away. How many dimes are left?
K= 6. Can = 10? If not, solve for the unknown. James had 9 games. He lent some to his friend and now he has 1 left. How many games did he lend to his friend?
= 10
Yes
No
= Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
Directions: Write the equation and solve for the unknown.
1. Grant had 30 books. He lent some to his friend and now he has 10 left. How many books did he lend to his friend?
= 2. Elle has 40 stickers. She gives 10 to her friends. How many stickers are left?
W= *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 9 P TE
Name: ____________________________ Directions: Write the equation and solve for the unknown.
Date: ______________________________
1. Alex had 18 cookies. His family ate 9 cookies. How many cookies are left?
T= 2. There were 15 dogs outside. Some dogs went inside and there are 9 dogs still outside. How many dogs went inside?
= 3. Gillian wore lots of bracelets to school. She lost 2, and now she only has 9 left. How many bracelets did she begin with?
Z= Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
Directions: Write the equation and solve for the unknown.
4. Jack has 16 books. He finishes reading 7 books. How many books are left for Jack to read?
= 5. Can = 14? If not, solve for the unknown. Anh bought erasers. She lost 6 on the way home and now only has 8 left. How many erasers did she buy?
= 14
Yes
No
= 6. Drew has 30 gumballs. He gives some to his sister, and now he has 20 left. How many gumballs did he give to his sister?
Y= Copyright © Swun Math
Grade 1 Unit 10 Lesson 9 P TE
