One Step Problems
Carla has 8 cookies. Her friend brings her 2 more at lunch. How many cookies does she have now?
10 cookies
HaYoung has 13 cards in her hand. She gets rid of 3 on her first turn. She gets rid of 2 more on her last turn. How many cards does HaYoung have left?
8 cards
Cami reads 8 books. Darla reads 3 more books than Cami. How many books does Darla read?
11 books
Sal plants 9 red tulips. He plants some yellow tulips. He plants 18 tulips in all. How many yellow tulips did he plant?
8 yellow tulips
What is another name for the solution to a problem (the part you are trying to find?)
The Unknown
Aaliyah is doing her math homework. There are 10 problems on her homework. She completes 3 problems. How many math problems are left?
7 math problems.
Sonia has 12 blue lego bricks. She gets 10 more blue lego bricks. She gives 5 of her blue lego bricks to her sister. How many blue lego bricks does she have left?
17 blue lego bricks
Carter bakes 16 brownies. Jacob bakes 4 fewer brownies than Carter. How many brownies does Jacob bake?
12 brownies
Lea has 5 frisbees in her hand. She throws 2 of them. Her dog brings one back. How many frisbees does she have now?
Write the equation that matches the question and then solve.
5-2+1=?
4 frisbees.
What do you call an adding number?
An addend.
Eddie has some pencils. He gets 3 more pencils. Now he has 12 pencils. How many pencils did Eddie start with?
9 pencils
Marcus has 20 shirts. He buys 9 more shirts. He gives 4 to his brother. How many shirts does he have now?
25 shirts
Trey buys 12 markers. His sister has 8 markers. How many fewer markers does his sister have?
4 fewer markers
Amara buys 16 lemons to make lemonade. Her mom brings her 4 more. She uses 8 of them in her recipe. How many lemons does she have left?
Write the equation that matches the question and then solve.
16+4-8=?
12 lemons
What is the word for the answer to an addition problem?
Sum
Write an equation that matches the problem, then solve:
Dani has 4 bananas. Erica has 3 apples. How much fruit do they have in all?
4+3=?
7 fruits
Write each step for the problem, then solve:
Devonte takes 18 pictures. He deletes 6 of them. He takes some more. Now, he has 19 pictures. How many more pictures did he take?
Step 1: 18-6=?
Step 2: 12+?=19
He took 7 pictures
Sam solves 12 math problems. He solves 3 more problems than Lola. The equation 12-3=? can be used to find the number of problems Lola solves. Write another equation that can be used to find the number of problems Lola solves.
3+?=12
?+3=?
12-?=3
Tamara buys 13 sun hats. She buys 4 fewer sun hats than baseball caps. Can the equation 13+4=? be used to solve the problem?
How do you know?
Subtraction
Which equation(s) can you use to solve this problem:
Tanya has 14 sandwiches for her picnic. Her family ate 9 sandwiches. How many sandwiches are left?
a) 14+9=?
b) 14-9=?
c) 9+?=14
d) 9-?=14
(b) and (c)
Which steps can you use to solve this problem:
Ellory bakes 24 cookies for her bake sale. She sells 14 chocolate cookies and 6 sugar cookies. How many cookies are left?
a) step 1: 14+6=?
step 2: 24-20=?
b) step 1: 14-6=?
step 2: 24+8=?
a) step 1: 14+6=?
step 2: 24-20=?
Which equation(s) can you use to solve this problem:
Julio reads 14 pages of his book. He reads 4 fewer pages than Mila. How many pages did Mila read?
a) 14-4=?
b) ?-14=4
c) 4+?=14
d) 14+4=?
Write two equations that could help you solve this problem and then solve
Jamie is baking for 20 minutes. He spends 12 minutes making cupcakes. He spends the rest of the time baking cookies. How many minutes does he spend baking cookies?
20-12=?
20-?=12
12+?-20
?+12=20
8 minutes
When we get more of, or are trying to find the total, what type of problem are we solving?
Addition.