Problem Solving
Chloe sees 3 dogs at the park. 2 more dogs show up at the park a little while later. How many dogs did Chloe see at the park that day?
Is this addition or subtraction? How do you know?
Chloe saw 5 dogs at the park.
It is addition.
8+6=14
14-6=8
6+8=14
_ ? _ = _
Which related fact is missing from the fact family?
14-8=6
0+3=3
0+4=4
0+5=5
_+_=_
Which equation is missing in the fact family?
What is the fact pattern rule?
0+6=6
Pattern rule: +1
9+4=13
__ - __= __
What is the related fact?
13-4=9
Carolina saw 20 animals at the zoo with her classmates. The zookeeper brought 5 of them to take a bath. How many animals are still out?
Is this addition or subtraction?
15 zoo animals?
It is addition.
Leo plays 6 games outside at recess. He then goes back to class and plays 3 more games. How many games did Leo play at school that day?
Is this addition or subtraction? How do you know?
Leo plays 9 games at school that day.
It is addition.
9+4=13
_ ? _= _
4+9=13
13-9=4
Which related fact is missing from the fact family?
13-4=9
5-5=0
6-6=0
7-7=0
_-_=_
Which equation is missing in the fact family?
What is the fact pattern rule?
Pattern rule: -1
14-6=8
__ + __= __
What is the related fact?
8+6=14
Frankie has 25 pet chickens in his yard. When he was outside playing, 15 more chickens walked into his yard, so he kept them as pets. How many chickens does Frankie have now?
Is this addition or subtraction?
Frankie has 40 chickens now.
This is addition.
Ivana has 8 stuffed animals at home. She gives her little sister 3 of them. How many stuffed animals does Ivana have now?
Is this addition or subtraction? How do you know?
Ivana has 5 stuffed animals now.
It is subtraction.
_ ? _ = ?
16-7=9
7+9=16
16-9=7
Which related fact is missing from the fact family?
9+7=16
9+3=12
_+_=_
7+5=12
6+6=12
Which equation is missing in the fact family?
What are the fact pattern rules?
8+4=12
Pattern rules: -1, +1
15-7=8
__+__=__
What is the related fact?
8+7=15
Valentina got an ice cream cone with 15 scoops on it. While she was eating it, she dropped 7 scoops on the sidewalk. It was too heavy! How many scoops of ice cream does Valentina have left on her cone?
Is this addition or subtraction?
Valentina has 8 scoops of ice cream left.
This is subtraction
Dom has 15 books about American history in his book. bag. His friend wants to read some, so Dom gives him 7 of them. How many books does Dom have now?
Is this addition or subtraction? How do you know?
Dom has 8 books now.
It is subtraction.
8+3=11
11-3=8
3+8=11
_ ? _ = _
11-8=3
2+9=11
3+8=11
_+_=_
_+_=_
Which equation is missing in the fact family?
What are the fact pattern rules?
4+7=11
5+6=11
Pattern rules: +1, -1
10-2=8
__+__=__
What is the related fact?
8+2=10
Max has 23 video games at home. His sister got him 9 more for his birthday. How many video games does Max have at home now?
Is this addition or subtraction?
Max has 32 video games now.
This is addition.
Carmine has 20 lollipops in his backpack. His sister brings him 15 more. How many lollipops does Carmine have in his backpack now?
Is this addition or subtraction? How do you know?
Carmine has 35 lollipops in his backpack now.
It is addition.
12-7=5
_ ? _ = _
12-5=7
_ ? _ = _
Which related facts are missing from the fact family?
5+7=12
7+5=12
_-_=_
9-4=5
8-3=5
_-_=_
Which equation is missing in the fact family?
What are the fact pattern rules?
10-5=5
7-2=5
Pattern rule: -1
9+8=17
__-__=
What is the related fact?
17-8=9
Miss Mancaniello has 100 stickers for her students. She buys 100 more, just incase she runs out. How many stickers does Miss Mancaniello have for her students now?
Is this addition or subtraction?
Miss Mancaniello has 200 stickers now.
This is addition.