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Name
1-11
Add. Use doubles.
1. 8 +
6 = 14
7 + 8 = 15
5 + 6 = 11
2. 7 +
6 = 13
11 + 9 = 20
8 + 9 = 17
3. Complete the Math Mountains and equations.
15
15
7
8
7 + 8 = 15
7
15
8
7+ 8
=
7
15
8
15 - 7 = 8
Make a ten to find the total.
9 = 14
5 + 8 = 13
3 + 9 = 12
5. 8 +
6 = 14
4 + 7 = 11
9 + 7 = 16
6. Stretch Your Thinking Write a word problem
to match this drawing.
5 flew away
6 now 7 8 9 10 11 11 to start
Sample answer: Rohan and Tina saw 11 butterflies on a bush. Some
butterflies flew away. Now there are 6 butterflies. How many flew away?
22
UNIT 1 LESSON 11
Add To and Take From Problems-Unknown in All Positions
© Houghton Mifflin Harcourt Publishing Company
4. 5 +