Part-Part-Total
Build a part-part-total model based on this word problem:
Ms. Hanson buys 62 stickers. She gives some to her students. Now she has 14 left.
Total: 62
Part: 14
Solve: There are some bees on a flower. 3 more bees join them. Then, 7 bees fly away. Now there are 10 bees left. How many bees were on the flower at the beginning?
14 bees
Is this equation true or false?
13-2=8+3
True
Build a part-part-total model based on the word problem:
Elianny brings some Valentines for the class. She gives out 23, and has 12 left.Part: 23
Part: 12
Castiel has 22 crayons. He shares some with Allison. Then he gets 7 more crayons. Now he has 15 crayons. How many crayons did Castiel share with Allison?
14 crayons
Is this equation true or false?
16-9=4+5
False
If we know a part and a total, do we add or subtract?
Subtract
There are 11 girls and 12 boys in the classroom. Some kids go to the bathroom, and now there are 18 kids in the classroom. How many kids went to the bathroom?
5 kids
Is this equation true or false?
21-6=10+5
True
If we know two parts, do we add or subtract to find the total?
Add
Evelyn bakes 25 cupcakes. She eats 7. She makes some more. Now she has 28 cupcakes. How many more cupcakes did she make?
10 more cupcakes
Fill in the number that makes this equation true.
12+5=18-_
1
Build a part-part-total model for this word problem and solve:
Mrs. Conlon has some pencils. She gives 16 to students, and now has 33 left. How many pencils did Mrs. Conlon have at the start?
Part: 33
Part: 16
Answer: 49
Ali makes 34 rain frogs. He gives some to Daydean. He then gives 8 to Rajan. Now Ali has 13 rain frogs left. How many rain frogs did Ali give to Daydean?
13 rain frogs
Fill in the number that makes this equation true.
15+5=24-_
4