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2-digit Adding with Regrouping
2-digit Adding without Regrouping
Place Value
Examples
Strategies
100
50+50=
What is 100
100
40+40=
What is 80
100
What place value do we start with in a 2 digit addition problem?
What is the ones place?
100
42 + 10=
What is 52?
100

Use the Number line Strategy to add: 31 + 28  = 

58

200
79+22=
What is 101
200
35+32=
What is 67
200
What number is in the tens place in the number 57?
What is 5?
200
32 + 6=
What is 38?
200

Use the expanded form strategy to add 56 + 12 = 

68

300
39+37=
What is 76
300
48+11=
What is 59
300
Count by 10's to 100.
What is 10,20,30,40,50,60,70,80,90,100?
300
27+40=
What is 67?
300
Use base ten blocks to add 44 + 29 = 

73

400
18+44=
What is 62?
400
97+32
What is 129
400
What is 3 tens + 5 tens?
What is 8 tens?
400
24+ 27=
What is 51?
400

Use the Number line Strategy to add: 52 + 34  =

86

500
34 + 18=
What is 52?
500
87+51=
What is 138
500
What place is the 7 in 79?
What is tens place?
500
60+7=
What is 67?
500

Use the expanded form strategy to add 38 + 14 =

52