Doubles
Single Digit Addition
2 Digit Addition
Addition Word Problems
Name the Strategy
100

3+3

6

100

9+1

10

100

11+33

44

100

Beth found 7 marbles in her desk. Peter found 12 marbles in his desk. How many marbles did the teacher collect from Beth and Peter altogether? 


19 marbles

100

7+0

Any number plus zero...

Plus 0

200

6+6

12

200

8+4

12

200

48+10

58

200

Sarah collected 14 stickers. Sam collected 32 stickers. If they combine their stickers, how many do they have altogether?

46 stickers

200

3+4

I can double 3 and add 1

3+4 = 3+3+1

Doubles plus 1

300

7+7

14

300

6+7

13

300

47+28

75

300

Sally has 39 books. Alyssa has 22 books. How many books do they have altogether?

61 books


300

3+5

I can double 4 and then add to find the sum

Monkey in the middle

400

9+9

18
400

9+8

17

400

82+17

99

400

Mike has 46 hockey cards. Jennifer has 37 hockey cards. How many hockey cards do they have altogether?

83 hockey cards

400

1+9, 3+7, 4+6, 5+5, 2+8

These numbers go together because they are all...

Partners of 10

500

12+12

24

500

5+7+9

21

500

63+52

115

500

Mrs. Wheeler's class ate 15 slices of pizza. Mr. Scatozza's class ate 20 slices of pizza. Mrs. Gaglia's class ate 19 slices of pizza. How many slices of pizza did all 3 classes eat in all? 

54 slices of pizza

500

10+8

Add a single digit number to 10 and the ones place changes to that number

10 to Teen

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