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Name
1-3
Add.
1.
4
+
_7
11
5
+
_6
11
7
+
_8
15
8
+
_6
14
7
+
_7
14
9
+
_5
14
12
_7
5
17
_9
8
14
_6
8
15
_7
8
16
_8
8
Subtract.
2.
13
_8
5
3. Write two equations for each Math Mountain. Equations may vary.
14
8
7
5
9
14 - 7 =
8+5=
7+
5+8
=
9+
11
6
6
UNIT 1 LESSON 3
5
4
Answers will vary. Sample
answers are given.
11
11
7
2
17
17 - 9 =
14
4. Stretch Your Thinking Write four different
Math Mountains with a total of 11.
=
11
9
1
10
Make-a-Ten Strategies
© Houghton Mifflin Harcourt Publishing Company
=
17