1. Addition Strategy: Multi-digit Mental Math
Number Talk (Sherry Parrish)

2. Use any strategy you want to solve: 116 +118

3. Breaking Each Number into Place Value 116 +118
( ) + ( )
= 20
6 + 8 = 14
= 200
= 234

4. Making Landmark or Friendly Numbers 116 +118
+ 2
= 236
= 234
+ 2
234

5. Doubles / Near Doubles 116 +118
- 1
- 3
= 230
= 234 +4
234

6. Making Tens 116 +118 (110 + 4 + 2) + (110 + 8) 110 + 110 +(2 + 8) + 4
( ) + ( )
(2 + 8) + 4
(10) + 4
= 234

7. Making Tens 116 +118 (110 + 2) + (110 + 4 + 4) 110 + 110 +(6 + 4) + 4
( ) + ( )
(6 + 4) + 4
(10) + 4
= 234

8. Compensation
- 2
-+2
= 324

9. Compensation +4 -4
= 234

10. Adding Up in Chunks 116 +118 116+ (100 + 10 + 4 + 4 ) 116 + 100 = 216
116+ ( )
= 216
= 226
= 230
= 234

11. Adding Up in Chunks 116 +118 (110 + 6) + 118 (110 + 118) + 6
( ) + 6
= 234

12. Use any strategy you want to solve: 116 +118