Teacher Explanation (not for students) https://www. youtube. com/watch Teacher Explanation (not for students) https://www.youtube.com/watch?v=s95iUCIiIRQ (9:52 min) Receive free worksheets by email: https://freemathworksheets.classroomprofessor.com Simple Demo (Parent/Student) 1st Grade Level https://www.youtube.com/watch?v=nDw6igbLMw8 (1:43 min)

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

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 https://www.youtube.com/watch?v=4_pTUVROoFg (6:16 min) 2. Mental Math Secrets https://www.youtube.com/watch?v=sg0DVrYfLMw (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 https://www.youtube.com/watch?v=AzaNPugONV4 (12:08 min) PAUSE: Check for understanding by practicing. Complete the “One Column Addition” box on next slide. 4. Rapid Two Column Addition https://www.youtube.com/watch?v=zYMlzM52sXk (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 https://www.youtube.com/watch?v=npBxAz_ed2M (6:38 min) PAUSE: Check for understanding by practicing. Complete the “Three Column Addition” box on next slide.

Checking for Understanding One Column Addition 7 5 8 3 6 4 9 3 5 + 8 8 8 4 5 + 7 3 + 7 Two Column Addition 95 24 98 82 58 37 45 47 26 69 62 55 53 39 42 87 81 97 + 28 + 76 + 86 Three Column Addition 207 642 209 586 837 989 + 329 528 655 + 561 834 468 312 718 + 786 411 319 +638

ANSWERS: Checking for Understanding One Column Addition 7 5 8 3 6 4 9 3 5 + 8 8 8 27 4 5 + 7 3 3 3 + 7 40 Two Column Addition 95 24 98 82 58 37 45 47 26 69 62 55 53 39 42 87 81 97 + 28 + 76 + 86 459 387 441 Three Column Addition 207 642 209 586 837 989 + 329 528 655 1,122 + 561 834 2,568 468 312 718 + 786 411 4,253 319 +638 2,086

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

Working with Compliments Working with Compliments Math Journal Slip #1 Compliments List and Learn:  1 9 6 4 2 8 7 3 3 7 8 2 4 6 9 1 5 5   Working with Compliments How far from 20? List the example compliments 16 4 12 8 17 3 11 9 How far from 40? List the example compliments 9 36 4 32 8 34 6 Mental Math Strategy 10 + 5 15 + 34 30 + 4 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: 37 45 76 28 63 55 24 72 Work left to right First column sum to 9 Second column sum to 10 Standard Algorithm 1 76 + 89 165

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.