G1 U10 L13 TE
Applied MP
MPs * Embedded MP
Procedural Lesson Grade 1 · Unit 10 · Lesson 13
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MC: 1.OA.1 Student Journal Pages
139-146
Today, I will solve “how many fewer?” comparing word problems where the difference is unknown.
Vocabulary
Teacher Resources
Compare Difference Unknown – How many fewer word problems: June has 8 toys. Colleen has 12 toys. How many fewer toys does June have than Colleen?
12 — 8 = W Unknown Solve for the unknown:
12 — 8 = 4 W=4 This problem can also be solved as a missing addend problem.
8 + W = 12 W=4
Copyright © Swun Math
Considerations: Students need to be exposed to many ways to represent the unknown (empty box, letters, and symbols). This type of word problem can be solved as a subtraction equation or a missing addend equation.
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?
Grade 1 Unit 10 Lesson 13 P TE
Answer Key: I/M
SGP
1. Equations may
1. Equations may
vary. = 3
2. Equations may
vary.
T= 5
2. Equations may
vary. W= 7
vary.
=6
FCU
SP
1. Equations may
1. Equations may
vary.
=6
2. Equations may vary.
Z= 1
vary.
X= 9
2. Equations may vary.
=6
3. Equations may vary.
=5
4. Equations may vary.
M= 7
5. Equations may vary.
6. Yes
Copyright © Swun Math
CH
HW
1. Answers will
1. Equations may
vary.
vary.
2. Answers will vary.
▲=4
2. Equations may vary.
X= 2
3. Equations may vary.
Z= 3
4. Equations may vary.
=7
5. No. = 4
Y= 6
6. Answers will vary.
Grade 1 Unit 10 Lesson 13 P TE
/ *MP1: Make sense of the problem and persevere in solving it! *MP8: Find a strategy to help solve the problem. Directions: Use drawings and equations to solve for the unknown.
1. Oliver threw 8 snowballs. Gabriel threw 11 snowballs. How many fewer snowballs did Oliver throw than Gabriel? Drawings:
Equation
= 2. Lillian has 16 balloons. Daniel has 9 balloons. How many fewer balloons does Daniel have than Lillian? Drawings:
Equation
W= 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 13 P TE
/ Directions: Use drawings and equations to solve for the unknown.
1. Elijah has 8 dollars. Caleb has 13 dollars. How many fewer dollars does Elijah have than Caleb? Drawings:
Equation
T= 2. Savannah drew 10 pictures. Peyton drew 4 pictures. How many fewer pictures did Peyton draw than Savannah? Drawings:
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 13 P TE
Directions: Use drawings and equations to solve for the unknown.
1. Emmett has 12 markers. William has 6 markers. How many fewer markers does William have than Emmett? Drawings:
Equation
= 2. Violet ate 9 crackers. Bella ate 10 crackers. How many fewer crackers did Violet eat than Bella? Drawings:
Equation
Z=
Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Directions: Use drawings and equations to solve for the unknown.
1. Max has 12 books. Jorge has 3 books. How many fewer books does Jorge have than Max? Drawings:
Equation
X= 2. There are 14 cherry lollipops and 8 grape lollipops. How many fewer grape lollipops are there than cherry? Drawings:
Equation
= Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Directions: Use drawings and equations to solve for the unknown.
3. There are 2 limes and 7 lemons. How many fewer limes are there than lemons? Drawings:
Equation
= 4. Wyatt ate 14 marshmallows. Arianna ate 7 marshmallows. How many fewer marshmallows did Arianna eat than Wyatt? Drawings:
Equation
M= Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Directions: Use drawings and equations to solve for the unknown.
5. There are 2 yellow chairs and 8 blue chairs. How many fewer yellow chairs are there than blue chairs? Drawings:
Equation
Y= 6. Can X = 10? If not, solve for the unknown. There are 15 tall trees and 5 short trees. How many fewer short trees are there than tall trees?
X = 10
Yes
Copyright © Swun Math
No
Equation
X=
Grade 1 Unit 10 Lesson 13 P TE
Directions: Choose numbers to complete the word problem. Fill in all the blanks. Solve for the unknown.
1. Zoe sent
cards. Liam sent
cards did
send than
cards. How many fewer ?
Drawings:
Equation
= 2. Evelyn has
pieces of gum. Mason has
How many fewer pieces of gum did
pieces of gum. have than
? Drawings:
Equation
= Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
*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 13 P TE
Name: ____________________________ Directions: Use drawings and equations to solve for the unknown.
Date: ______________________________
1. There are 7 planes on the ground. There are 11 planes in the air. How many fewer planes are on the ground than in the air? Drawings:
Equation
▲= 2. Bradley clapped 5 times. Eric clapped 3 times. How many fewer times did Eric clap than Bradley? Drawings:
Equation
X=
Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Directions: Use drawings and equations to solve for the unknown.
3. Sadie has 9 candy bars. Hailey has 6 candy bars. How many fewer candy bars does Hailey have than Sadie? Drawings:
Equation
Z= 4. There are 5 motorboats. There are 12 sailboats. How many fewer motorboats are there than sailboats? Drawings:
Equation
= Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Name: ____________________________ Date: ______________________________
Directions: Use drawings and equations to solve for the unknown.
5. Can = 12? If not, solve for the unknown. Sammy has 8 stuffed animals. Avery has 4 stuffed animals. How many fewer stuffed animals does Avery have than Sammy?
= 12 Yes
No
Equation
=
6. Choose numbers to complete the word problem. Fill in all the blanks. Solve for the unknown.
Gina picked
flowers. Tanya picked
fewer flowers did
pick than
flowers. How many ?
Drawings:
Equation
X=
Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
MPs * Embedded MP
Procedural Lesson Grade 1 · Unit 10 · Lesson 13
1
2
3
4
*
*
*
5
6
7
8
*
*
MC: 1.OA.1 Student Journal Pages
139-146
Today, I will solve “how many fewer?” comparing word problems where the difference is unknown.
Vocabulary
Teacher Resources
Compare Difference Unknown – How many fewer word problems: June has 8 toys. Colleen has 12 toys. How many fewer toys does June have than Colleen?
12 — 8 = W Unknown Solve for the unknown:
12 — 8 = 4 W=4 This problem can also be solved as a missing addend problem.
8 + W = 12 W=4
Copyright © Swun Math
Considerations: Students need to be exposed to many ways to represent the unknown (empty box, letters, and symbols). This type of word problem can be solved as a subtraction equation or a missing addend equation.
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?
Grade 1 Unit 10 Lesson 13 P TE
Answer Key: I/M
SGP
1. Equations may
1. Equations may
vary. = 3
2. Equations may
vary.
T= 5
2. Equations may
vary. W= 7
vary.
=6
FCU
SP
1. Equations may
1. Equations may
vary.
=6
2. Equations may vary.
Z= 1
vary.
X= 9
2. Equations may vary.
=6
3. Equations may vary.
=5
4. Equations may vary.
M= 7
5. Equations may vary.
6. Yes
Copyright © Swun Math
CH
HW
1. Answers will
1. Equations may
vary.
vary.
2. Answers will vary.
▲=4
2. Equations may vary.
X= 2
3. Equations may vary.
Z= 3
4. Equations may vary.
=7
5. No. = 4
Y= 6
6. Answers will vary.
Grade 1 Unit 10 Lesson 13 P TE
/ *MP1: Make sense of the problem and persevere in solving it! *MP8: Find a strategy to help solve the problem. Directions: Use drawings and equations to solve for the unknown.
1. Oliver threw 8 snowballs. Gabriel threw 11 snowballs. How many fewer snowballs did Oliver throw than Gabriel? Drawings:
Equation
= 2. Lillian has 16 balloons. Daniel has 9 balloons. How many fewer balloons does Daniel have than Lillian? Drawings:
Equation
W= 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 13 P TE
/ Directions: Use drawings and equations to solve for the unknown.
1. Elijah has 8 dollars. Caleb has 13 dollars. How many fewer dollars does Elijah have than Caleb? Drawings:
Equation
T= 2. Savannah drew 10 pictures. Peyton drew 4 pictures. How many fewer pictures did Peyton draw than Savannah? Drawings:
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 13 P TE
Directions: Use drawings and equations to solve for the unknown.
1. Emmett has 12 markers. William has 6 markers. How many fewer markers does William have than Emmett? Drawings:
Equation
= 2. Violet ate 9 crackers. Bella ate 10 crackers. How many fewer crackers did Violet eat than Bella? Drawings:
Equation
Z=
Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Directions: Use drawings and equations to solve for the unknown.
1. Max has 12 books. Jorge has 3 books. How many fewer books does Jorge have than Max? Drawings:
Equation
X= 2. There are 14 cherry lollipops and 8 grape lollipops. How many fewer grape lollipops are there than cherry? Drawings:
Equation
= Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Directions: Use drawings and equations to solve for the unknown.
3. There are 2 limes and 7 lemons. How many fewer limes are there than lemons? Drawings:
Equation
= 4. Wyatt ate 14 marshmallows. Arianna ate 7 marshmallows. How many fewer marshmallows did Arianna eat than Wyatt? Drawings:
Equation
M= Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Directions: Use drawings and equations to solve for the unknown.
5. There are 2 yellow chairs and 8 blue chairs. How many fewer yellow chairs are there than blue chairs? Drawings:
Equation
Y= 6. Can X = 10? If not, solve for the unknown. There are 15 tall trees and 5 short trees. How many fewer short trees are there than tall trees?
X = 10
Yes
Copyright © Swun Math
No
Equation
X=
Grade 1 Unit 10 Lesson 13 P TE
Directions: Choose numbers to complete the word problem. Fill in all the blanks. Solve for the unknown.
1. Zoe sent
cards. Liam sent
cards did
send than
cards. How many fewer ?
Drawings:
Equation
= 2. Evelyn has
pieces of gum. Mason has
How many fewer pieces of gum did
pieces of gum. have than
? Drawings:
Equation
= Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
*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 13 P TE
Name: ____________________________ Directions: Use drawings and equations to solve for the unknown.
Date: ______________________________
1. There are 7 planes on the ground. There are 11 planes in the air. How many fewer planes are on the ground than in the air? Drawings:
Equation
▲= 2. Bradley clapped 5 times. Eric clapped 3 times. How many fewer times did Eric clap than Bradley? Drawings:
Equation
X=
Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Directions: Use drawings and equations to solve for the unknown.
3. Sadie has 9 candy bars. Hailey has 6 candy bars. How many fewer candy bars does Hailey have than Sadie? Drawings:
Equation
Z= 4. There are 5 motorboats. There are 12 sailboats. How many fewer motorboats are there than sailboats? Drawings:
Equation
= Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Name: ____________________________ Date: ______________________________
Directions: Use drawings and equations to solve for the unknown.
5. Can = 12? If not, solve for the unknown. Sammy has 8 stuffed animals. Avery has 4 stuffed animals. How many fewer stuffed animals does Avery have than Sammy?
= 12 Yes
No
Equation
=
6. Choose numbers to complete the word problem. Fill in all the blanks. Solve for the unknown.
Gina picked
flowers. Tanya picked
fewer flowers did
pick than
flowers. How many ?
Drawings:
Equation
X=
Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
Copyright © Swun Math
Grade 1 Unit 10 Lesson 13 P TE
