1-Step Addition Problems
Dezinay and Elizabeth each have a collection of marbles. Bob has 8 and Sue has 4.
How many marbles do they have altogether? Write an equation to solve the problem.
8 + 4 = 12
They have 12 marbles altogether.
Jeff had 10 cookies, but he gave his sister, Kim, 3 of them. How many cookies does Jeff have left?
What subtraction equation would help you solve this problem?
10 - 3 = 7
Jeff has 7 cookies left.
Tom and Fred each have 5 blocks. Their mom gives them 2 more blocks. How many total blocks do they have now?
Which 2 addition equations will help you solve this problem?
5 + 5 = 10
10 + 2 = 12
They have 12 blocks now.
There were 10 birds in the tree. A cat climbed the tree and 3 birds flew away. The cat jumped down, and 2 more birds flew away. How many birds were left in the tree?
Subtraction
There were 5 blue balloons and 3 red balloons. Then 2 balloons popped. How many balloons were left?
5 + 3 = 8
8 - 2 = 6
6 balloons were left.
Sue has 7 blue marbles. Bob also has some blue marbles. Together they have 12 blue marbles. How many blue marbles does Bob have?
What addition equation would give you the answer?
7 + ? = 12
7 + 5 = 12
Bob has 5 blue marbles.
Kim made 16 cookies. Jeff ate some of them. Now Kim has 12 cookies left. How many cookies did Jeff eat?
What subtraction equation could you write to solve this problem?
16 - ? = 12
16 - 4 = 12
Jeff ate 4 cookies.
Tom has 3 yellow balloons and 4 orange balloons. Then Fred gave him 7 white balloons. How many balloons does Tom have now?
Which 2 addition equations will help you solve this problem?
3 + 4 = 7
7 + 7 = 14
Tom has 14 balloons now.
There are 13 dogs in the dog park. 5 of them are brown, 2 are spotted, and the rest are white. How many dogs are white?
Subtraction
There were 5 pink markers and 7 green markers on the table. Then 4 markers rolled to the floor. How many markers were left on the table?
5 + 7 = 12
12 - 4 = 8
8 markers were left on the table.
Bob and Sue each have 9 purple marbles.
How many purple marbles do they have altogether?
What addition equation would help you solve this problem?
9 + 9 = 18
They have 18 purple marbles altogether.
Jeff and Kim have 15 cookies. Kim ate some, and now there are 10 left. How many cookies did Kim eat?
What subtraction equation would help you solve this problem?
15 - ? = 10
15 - 5 = 10
Kim ate 5 cookies.
Fred has 3 blue markers and 6 green markers. Then he found 7 red markers. How many markers does he have now?
Which 2 addition equations will help you solve this problem?
3 + 6 = 9
9 + 7 = 16
Fred has 16 markers now.
Sara had 19 grapes. Her friend gave her 8 more. Then her sister gave her 3 more. How many grapes does Sara have now?
Addition
Bill had 8 grapes. His mom gave him 7 more grapes. Then he gave 5 to his sister. How many grapes did Bill have left?
8 + 7 = 15
15 - 5 = 10
Bill had 10 grapes left.
Bob has 12 yellow marbles. Sue has some yellow marbles, too. Altogether they have 20 yellow marbles.
What addition equation would help you solve this problem?
12 + ? = 20
12 + 8 = 20
Sue has 8 yellow marbles.
Jeff has 18 cookies. Kim has 3 less than Jeff. How many cookies does Kim have?
What subtraction equation could be used to solve this problem?
18 - 3 = ?
18 - 3 = 15
Kim has 15 cookies.
Fred has 5 dollars from his mom and 6 dollars from his dad. His wants to buy a game that costs 15 dollars. How many more dollars does he need?
Which 2 addition equations will help you solve this problem?
5 + 6 = 11
11 + ? = 15
11 + 4 = 14
He needs 4 more dollars.
There were 20 kittens at the shelter. On Monday, 5 more arrived. 4 more came in on Tuesday. How many kittens are in the shelter?
Addition
Kevin had 15 apples in a basket. He gave 7 apples to his friends. Then he picked 10 more. How many apples does he have now?
15 - 7 = 8
8 + 10 = 18
Kevin has 18 apples.
Sue has more pink marbles than Bob. Bob has 5 pink marbles. Altogether they have 18 pink marbles. How many pink marbles does Sue have?
What addition equation would help you solve this problem?
5 + ? = 18
5 + 13 = 18
Sue has 13 pink marbles.
Jeff has 8 fewer cookies than Kim. Kim has 20 cookies. How many cookies does Jeff have?
What subtraction equation would solve this problem?
20 - 8 = ?
20 - 8 = 12
Jeff has 12 cookies.
Fred has 2 boxes of crayons. Each box has 8 crayons inside. Then his mom gave him 4 more crayons. How many total crayons does Fred have?
Which 2 addition equations will help you solve this problem?
8 + 8 = 16
16 + 4 = 20
Fred has 20 crayons.
There were 18 people in the pool. The bell rang and 7 children got out. Then 4 more people got out. How many people were left in the pool?
subtraction
Sam had 12 cards and Ben had 0 cards. Ben took some of Sam's cards. Now Sam has 9 cards. How many more cards does Sam have than Ben?
12 - ? = 9 (12 - 3 = 9) Ben took 3 cards.
9 - 3 = ? (9 - 3 = 6)
Sam has 6 more cards than Ben.