G1 U9 L7 TE
Applied MP
MPs * Embedded MP
Procedural Lesson Grade 1 · Unit 9 · Lesson 7
1
2
3
4
5
*
*
*
6
7
*
8
*
MC: 1.OA.4 Student Journal Pages
31-36
problems.
Today, I will solve subtraction problems as unknown addend
Vocabulary Think addition to subtract:
7—5= 5+=7
Teacher Resources Considerations: Creating drawings and counting up are modeled in this lesson but other strategies could also be used. Students who are familiar with addition facts may not require strategies, as they may automatically know the missing addend.
Create drawings:
7 — 5=
5+=7 Count up:
7 — 5= 5+=7 (5….6, 7)
Steps: 1. Think of the numbers in your subtraction fact
as an addition fact. + = 2. Use a strategy (drawings, count up, etc) to find the missing addend. 3. Use the missing addend to solve the subtraction fact.
Application of MPs: MP2: What steps help you solve your problems? MP4: How do you know your answers are correct? MP8: Can you use any shortcuts to solve the problems?
Copyright © Swun Math
Grade 1 Unit 9 Lesson 7 P TE
Answer Key: I/M
SGP
FCU
SP
CH
HW
1. 3, 8 + 3 = 11
1. 2, 9 + 2 = 11
1. 8, 4 + 8 = 12
1. 8, 5 + 8 = 13
1. Answers will
1. 3, 3 + 9 = 12
vary.
2. 4, 9 + 4 = 13
2. 3, 5 + 3 = 8
2. 6, 5 + 6 = 11
2. 6, 6 + 6 = 12
2. Answers will
2. 7, 6 + 7 = 13
vary.
Copyright © Swun Math
3. 7, 4 + 7= 11
3. 7, 7 + 7 = 14
4. 8, 6 + 8 = 14
4. 8, 9 + 8 = 17
5. 8, 7 + 8 = 15
5. No; 4, 8 + 4 =12
6. No; 5, 7 + 5 = 12
6. Answers will vary.
Grade 1 Unit 9 Lesson 7 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 addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
1.
11 — 8 = 8
2.
+
=
13 — 9 =
9
+
=
MP2: What steps helped you solve your problems? MP4: How do you know your answers are correct? MP8: What strategies did you use to help solve your problems?
Copyright © Swun Math
Grade 1 Unit 9 Lesson 7 P TE
/ Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
1.
11 — 9 = 9
+
=
2.
8—5= 5
+
=
MP2: What steps helped you solve your problems? MP4: How do you know your answers are correct? MP8: What strategies did you use to help solve your problems?
Copyright © Swun Math
Grade 1 Unit 9 Lesson 7 P TE
Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
1.
12 — 4 = 4
2.
=
11 — 5 =
5
Copyright © Swun Math
+
+
=
Grade 1 Unit 9 Lesson 7 P TE
Name: ____________________________ Date: ______________________________ Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
1.
13 — 5 = 5
2.
=
12 — 6 = 6
3.
+
=
11 — 4 = 4
Copyright © Swun Math
+
+
= Grade 1 Unit 9 Lesson 7 P TE
Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
4.
14 — 6 = 6
5.
+
=
15 — 7 = 7
+
=
6. Does 12 — 7= 4? If not, use the unknown addend problem to find the correct difference.
12 — 7 =
12— 7 = 4 Yes
No
7 Copyright © Swun Math
+
= Grade 1 Unit 9 Lesson 7 P TE
Directions: Pick a subtraction fact and record it on the line. Write the addition fact that helps solve the subtraction fact. Find the difference.
1.
+
=
+
=
2.
*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 steps helped you solve your problems? MP5: How did you know your answers were correct? MP8: What strategies did you use to help solve your problems?
Copyright © Swun Math
Grade 1 Unit 9 Lesson 7 P TE
Name: ____________________________ Date: ______________________________ Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
1.
12 — 9 = 9
2.
=
13 — 6 = 6
3.
+
=
14 — 7 = 7
Copyright © Swun Math
+
+
= Grade 1 Unit 9 Lesson 7 P TE
Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
4.
17 — 9 = 9
+
=
5. Does 12 — 8= 7? If not, use the unknown addend problem to find the correct difference.
12 — 8 =
12— 8 = 7 Yes
No
8
+
=
6. Pick a subtraction fact and record it on the line. Write the addition fact that helps solve the subtraction fact. Find the difference.
+ Copyright © Swun Math
= Grade 1 Unit 9 Lesson 7 P TE
MPs * Embedded MP
Procedural Lesson Grade 1 · Unit 9 · Lesson 7
1
2
3
4
5
*
*
*
6
7
*
8
*
MC: 1.OA.4 Student Journal Pages
31-36
problems.
Today, I will solve subtraction problems as unknown addend
Vocabulary Think addition to subtract:
7—5= 5+=7
Teacher Resources Considerations: Creating drawings and counting up are modeled in this lesson but other strategies could also be used. Students who are familiar with addition facts may not require strategies, as they may automatically know the missing addend.
Create drawings:
7 — 5=
5+=7 Count up:
7 — 5= 5+=7 (5….6, 7)
Steps: 1. Think of the numbers in your subtraction fact
as an addition fact. + = 2. Use a strategy (drawings, count up, etc) to find the missing addend. 3. Use the missing addend to solve the subtraction fact.
Application of MPs: MP2: What steps help you solve your problems? MP4: How do you know your answers are correct? MP8: Can you use any shortcuts to solve the problems?
Copyright © Swun Math
Grade 1 Unit 9 Lesson 7 P TE
Answer Key: I/M
SGP
FCU
SP
CH
HW
1. 3, 8 + 3 = 11
1. 2, 9 + 2 = 11
1. 8, 4 + 8 = 12
1. 8, 5 + 8 = 13
1. Answers will
1. 3, 3 + 9 = 12
vary.
2. 4, 9 + 4 = 13
2. 3, 5 + 3 = 8
2. 6, 5 + 6 = 11
2. 6, 6 + 6 = 12
2. Answers will
2. 7, 6 + 7 = 13
vary.
Copyright © Swun Math
3. 7, 4 + 7= 11
3. 7, 7 + 7 = 14
4. 8, 6 + 8 = 14
4. 8, 9 + 8 = 17
5. 8, 7 + 8 = 15
5. No; 4, 8 + 4 =12
6. No; 5, 7 + 5 = 12
6. Answers will vary.
Grade 1 Unit 9 Lesson 7 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 addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
1.
11 — 8 = 8
2.
+
=
13 — 9 =
9
+
=
MP2: What steps helped you solve your problems? MP4: How do you know your answers are correct? MP8: What strategies did you use to help solve your problems?
Copyright © Swun Math
Grade 1 Unit 9 Lesson 7 P TE
/ Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
1.
11 — 9 = 9
+
=
2.
8—5= 5
+
=
MP2: What steps helped you solve your problems? MP4: How do you know your answers are correct? MP8: What strategies did you use to help solve your problems?
Copyright © Swun Math
Grade 1 Unit 9 Lesson 7 P TE
Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
1.
12 — 4 = 4
2.
=
11 — 5 =
5
Copyright © Swun Math
+
+
=
Grade 1 Unit 9 Lesson 7 P TE
Name: ____________________________ Date: ______________________________ Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
1.
13 — 5 = 5
2.
=
12 — 6 = 6
3.
+
=
11 — 4 = 4
Copyright © Swun Math
+
+
= Grade 1 Unit 9 Lesson 7 P TE
Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
4.
14 — 6 = 6
5.
+
=
15 — 7 = 7
+
=
6. Does 12 — 7= 4? If not, use the unknown addend problem to find the correct difference.
12 — 7 =
12— 7 = 4 Yes
No
7 Copyright © Swun Math
+
= Grade 1 Unit 9 Lesson 7 P TE
Directions: Pick a subtraction fact and record it on the line. Write the addition fact that helps solve the subtraction fact. Find the difference.
1.
+
=
+
=
2.
*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 steps helped you solve your problems? MP5: How did you know your answers were correct? MP8: What strategies did you use to help solve your problems?
Copyright © Swun Math
Grade 1 Unit 9 Lesson 7 P TE
Name: ____________________________ Date: ______________________________ Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
1.
12 — 9 = 9
2.
=
13 — 6 = 6
3.
+
=
14 — 7 = 7
Copyright © Swun Math
+
+
= Grade 1 Unit 9 Lesson 7 P TE
Directions: Write the addition fact that helps solve the subtraction fact. Solve for the unknown addend and find the difference.
4.
17 — 9 = 9
+
=
5. Does 12 — 8= 7? If not, use the unknown addend problem to find the correct difference.
12 — 8 =
12— 8 = 7 Yes
No
8
+
=
6. Pick a subtraction fact and record it on the line. Write the addition fact that helps solve the subtraction fact. Find the difference.
+ Copyright © Swun Math
= Grade 1 Unit 9 Lesson 7 P TE
