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Name
2-14
Add. Use any method.
1.
90
+
80
_
170
69
+
59
_
128
65
+
38
_
103
2.
35
+
89
_
124
53
+
66
_
119
77
+
91
_
168
Be the helper. Is the answer OK? Write yes or no.
If no, fix the mistakes and write the correct answer.
3.
58
+
86
_
144
OK?
Yes
4.
71
+
68
_
149
139
OK?
5.
No
87
+
99
_
185
186
OK?
No
6. Add. Explain how you found the sum.
Check children’s work. Children’s explanations
should include making a new ten and a new
hundred.
7. Stretch Your Thinking Write an addition exercise
using three 2-digit numbers. Find the sum.
Check children’s work.
70
UNIT 2 LESSON 14
Add Three or Four 2-Digit Addends
© Houghton Mifflin Harcourt Publishing Company
64
+
36
_
100