G1 U9 L2 SJ
Applied MP
MPs * Embedded MP
Procedural Lesson Grade 1 · Unit 9 · Lesson 2
1
2
3
*
*
4
5
*
6
7
*
MC: 1.OA.5
Today I will mentally count back to find the difference.
Vocabulary Number line:
Steps 1. Put the greater number of the equation in your head. 2. Count back the amount of the second number in the equation.
When you subtract, you move to the left on the number line.
3. Find the difference.
Count back: 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 Difference: 9-5=4
Copyright © Swun Math
Grade 1 Unit 9 Lesson 2 P SJ
8
*
/ Directions: Count back to find the difference.
1.
5—1=
2.
8—2=
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 2 P SJ
Directions: Count back to find the difference.
1.
7—2=
2.
11 — 1 =
Copyright © Swun Math
Grade 1 Unit 9 Lesson 2 P SJ
Name: ____________________________ Directions: Count back to find the difference.
1.
Date: ______________________________
10 — 1 =
2.
4—2= 3.
10 — 2 =
4.
8—2=
5.
11 — 2 =
6. Does 6 — 1= 7? If not, find the correct difference.
6—1=7 Yes
Copyright © Swun Math
No
6—1= Grade 1 Unit 9 Lesson 2 P SJ
Directions: Count back to find the difference.
1.
23 — 1 =
2.
36 — 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? MP4: 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 2 P SJ
Copyright © Swun Math
Grade 1 Unit 9 Lesson 2 P SJ
MPs * Embedded MP
Procedural Lesson Grade 1 · Unit 9 · Lesson 2
1
2
3
*
*
4
5
*
6
7
*
MC: 1.OA.5
Today I will mentally count back to find the difference.
Vocabulary Number line:
Steps 1. Put the greater number of the equation in your head. 2. Count back the amount of the second number in the equation.
When you subtract, you move to the left on the number line.
3. Find the difference.
Count back: 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 Difference: 9-5=4
Copyright © Swun Math
Grade 1 Unit 9 Lesson 2 P SJ
8
*
/ Directions: Count back to find the difference.
1.
5—1=
2.
8—2=
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 2 P SJ
Directions: Count back to find the difference.
1.
7—2=
2.
11 — 1 =
Copyright © Swun Math
Grade 1 Unit 9 Lesson 2 P SJ
Name: ____________________________ Directions: Count back to find the difference.
1.
Date: ______________________________
10 — 1 =
2.
4—2= 3.
10 — 2 =
4.
8—2=
5.
11 — 2 =
6. Does 6 — 1= 7? If not, find the correct difference.
6—1=7 Yes
Copyright © Swun Math
No
6—1= Grade 1 Unit 9 Lesson 2 P SJ
Directions: Count back to find the difference.
1.
23 — 1 =
2.
36 — 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? MP4: 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 2 P SJ
Copyright © Swun Math
Grade 1 Unit 9 Lesson 2 P SJ
