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1-17
Name
Cross out the extra information or write hidden or
missing information. Then solve the problem.
1. Joel has 9 dinosaur cards and 8 bird cards.
His friend Peja has 6 dinosaur cards. How
many dinosaur cards do the two friends
have altogether?
15
Show your work.
dinosaur
dinosaur cards
label
2. I have a ring for each finger of both hands.
I want to buy 4 more rings. How many rings
will I have then?
I have 10 fingers.
14
hands
rings
© Houghton Mifflin Harcourt Publishing Company
label
3. Erica had 6 coins in her coin collection.
She goes to a coin show and buys
some more coins. How many coins
does she have now?
Erica buys 5 coins.
Answers will vary.
11
coins
coin
label
UNIT 1 LESSON 17
Problems with Not Enough, Extra, or Hidden Information
33