2. Addition with 3 or more addends: 1.Add the numbers vertically 2. Make sure that all numbers are lined up in the correct place: TH,H T O 458 789 + 312 1,559 Example:

3. Try, Guess and Check Problem Solving: Method for when the numbers are low and easy to tally: 1) Tally circle method The Red Sox beat the Cubs by 9 runs in a baseball game Saturday. There were 19 runs scored in the game. What was the final score of the game? Use the tally method to figure this our. Draw 2 circles – one for each team. 1 st tally the 9 runs at the top of one circle for the number of runs that the team won by.

4. Then start counting at the 10 and put a tally in a circle and tally # 11 in the other circle and continue back and forth until you reach the total number of runs scored in the game. (19) Now total the tallies in the circles and you will have the score of the game. Score: 14 to 5. Red Sox had 14 runs

5. Method for when numbers are too high to tally: 2) Guess and Check Chart The Hawks beat the Jays in a baseball game. The scores were 6 runs apart and there were 48 runs scored in the game. How many runs did each team score? Make a Guess and Check Chart. Put the losing team in the first column. In the second column, you add 6 to the original guess because the team won by 6 runs. Make a guess at the Jays’ scores and complete the chart until you get the sum of the scores correct.

6. Jays Hawks (Jays +6) Sum of both scores= 48 guess right? 20 2620 + 26 = 46 Guess too low 25 21 31 27 25 + 31 = 56 21 + 27 = 48 Guess too high Right! When you get the correct answer you will know the scores. Jays 21 and Hawks 27

7. Working Together: 1. 75 36 + 58 2. 524 97 + 176 3. 273 187 64 + 249

8. Working Together: 4. Charlie has been collecting stamps in September and October. He has collected a total of 29. He collected 15 more in October than September. How many stamps did he collect each month?

9. Working Together: 5. The Hawks beat the Jays in a baseball game. The scores were 6 runs apart and there were 22 runs scored in the game. How many runs did each team score?

10. Working Together: 6. The sum of two numbers is 65. The numbers are 3 apart. What are they?

11. On My Own: 7. 142 297 + 116 8. 319 48 136 + 347 Johnny and Mitch have a total of 32 baseball cards. Mitch has two more than Johnny. How many cards does each boy have? 9.

12. On My Own: 10. The Hawks lost to the Orioles by 4 runs. There were 18 runs scored in the game. How many runs did the Orioles score? The Jays beat the Orioles by 8 runs. There were 16 runs scored in the game. How many runs did the Jays score? 11.