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Name the Strategy
Solve the Problem
My Favorite Wrong Answer
100
19 + 3 = +1 -1 20 + 2 = 22
What is Friendly Numbers?
100
64 + 32
What is 96?
100
29 + 8 30 + 8 = 38
What is 29 + 8 +1 -1 30 + 7 = 37
200
245 + 352 200 + 300 = 500 40 + 50 = 90 5 + 2 = 7 500 + 90 + 7 = 597
What is Number Sentence Addition?
200
125 + 262
What is 387?
200
326 + 145 300 + 100 = 400 20 + 20 = 40 5 + 6 = 12 400 + 40 + 12 = 452
What is 326 + 145 300 + 100 = 400 20 + 20 = 40 5 + 6 = 11 400 + 40 + 11 = 451
300
325 + 76 300 + 20 + 5 70 + 6 300 + 90 + 11 = 401
What is Place Value Addition?
300
85 + 306
What is 391?
300
225 + 162 200 + 100 = 300 2 + 6 = 8 5 + 2 = 7 300 + 8 + 7 = 315
What is 225 + 162 200 + 100 = 300 20 + 6 = 8 5 + 2 = 7 300 + 80 + 7 = 387
400
121 + 219 219 + 100 + 10 + 10 + 1 = 340
What is Break It Down?
400
111 + 609
What is 720?
400
124 + 366 100 + 20 + 4 = 124 300 + 60 + 6 = 366 124 + 366 = 490
What is 124 + 366 100 + 20 + 4 300 + 60 + 6 400 + 80 + 10 = 490
500
122 + 602 602 702 712 722 723 724
What is Number Sentence?
500
654 + 287
What is 941?
500
205 + 103 205 + 100 + 1 + 1 + 1 + 1 = 309
What is 205 + 103 205 + 100 + 1 + 1 + 1 = 309