1. Teacher Explanation (not for students) https://www. youtube. com/watch
Teacher Explanation (not for students) (9:52 min)
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Simple Demo (Parent/Student)
1st Grade Level (1:43 min)

2. Information organized by Beckey Townsend
ADDITION
REVIEW
Information organized by Beckey Townsend
Math Grade 6

3. Pause to complete practice problems
Watch Lesson Videos
Pause to complete practice problems
ADDITION REVIEW
RECOMMENDED LESSON VIDEOS:
1. Concrete manipulative demonstration on “Make Ten Strategy”
Make Ten Strategy (6:16 min)
2. Mental Math Secrets (12:30 min)
Math Journal Slip 1
* How far from 10? List compliments * How far from 40? List compliments
* How far from 20? List compliments * How far from 100? List compliments
Rapid Single Column Addition (12:08 min)
PAUSE: Check for understanding by practicing. Complete the “One Column Addition” box on next slide.
4. Rapid Two Column Addition (9:39 min)
* Shows standard algorithm * Shows mental math method (See screen shots at 3:42 & 5:22 & 5:45 & 6:20 in video)
PAUSE: Check for understanding by practicing. Complete the “Two Column Addition” box on next slide.
Add large numbers rapidly (6:38 min)
PAUSE: Check for understanding by practicing. Complete the “Three Column Addition” box on next slide.

4. Checking for Understanding
One Column Addition
7 5 8
3 6 4
9 3 5
4 5
+ 7 3
+ 7
Two Column Addition
Three Column Addition
468
312
411
319
+638

5. ANSWERS: Checking for Understanding
One Column Addition
7 5 8
3 6 4
9 3 5
27 4 5
+ 7 3 40
Two Column Addition
Three Column Addition 1, 2,
312
,253
319
+638
2,086

6. WHY? Why does using compliments make addition easier?
What did you notice when you used this method?

7. Working with Compliments Working with Compliments
Math Journal Slip #1
Compliments
List and Learn: 
Working with Compliments
How far from 20? List the example compliments
How far from 40? List the example compliments
Mental Math Strategy
10 + 5 15
Start left and work to the right. Count up s you go.
10, 40, 45, 49
Answer = 49
Working with Compliments
How far from 100? List the example compliments:
Work left to right
First column sum to 9
Second column sum to 10
Standard Algorithm 1 76
+ 89
165

8. EXIT TICKET
TODAY WE LEARNED …
… how to use “Make Ten” strategy for addition by using compliments
… how to explain/justify the answer to an addition problem
… mental fluency practice for addition.
1. Grab your student assignment sheet, and your math journal slip.
Complete the “exit ticket” assignment and turn it in to the teacher.
Continue working on the rest of the assignment sheet. If it is not finished in class, then it must be completed for homework.
Follow these instructions to complete your student assignment. Glance at the next slide if you need to see a picture of the required handouts.