Grade Level: 1st Skill: Addition and Subtraction Topic: Add or Subtract in Word Problems Goal: Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Skill Description: The student will be able to evaluate a problem situation and create a number sentence, either addition or subtraction, that they can use to solve the problem.

### Sample Problems

 (1) Two ducks are in the pond. One flies away. How many are left? (2-1=1) (2) There are three cats drinking milk. One more comes. How many cats are there all together? (3+1=4) (3) A clown has five balloons. He gives three away. How many does he have left? (5-3=2) (4) The boy had two scoops of ice cream. He ate one scoop. How many does he have left? (2-1=1) (5) The girl went to the library a found three books she liked. She continued to look around and found four more. How many books did she find all together? (3+4=7)

### Online Resources

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### Extra Help Problems

 (1) Two dogs are running in the park. Two more dogs join them. How many dogs are running all together? (2+2=4) (2) I had three candy bars. My brother ate one. How many do I have left? (3-1=2) (3) I have 2 pages of math homework and three pages of reading homework. How many pages of homework do I have all together? (2+3=5) (4) Four kids are playing on the slide. Two more kids come. How many kids are playing all together? (4+2=6) (5) There are 12 eggs in the egg carton. Three eggs are broken. How many eggs are left? (12-3=9) (6) My dad has 6 donuts. I ate 2. How many does he have left? (6-2=4) (7) There are 3 people in line waiting to ride the train. Five more people come. How many people are waiting in line now? (3+5=8) (8) There are 11 dog bones in a bag. Pete the puppy eats 3. How many bones are left? (11-3=8) (9) Sammy has 12 toy cars. His brother looses 5. How many cars does Sammy have left? (12-5=7) (10) There are 6 fish swimming together in the ocean. Nine more fish come to swim. How many fish are there now? (6+9=15) (11) I have 5 pieces of bubble gum. My friend gives me 6 more. How many pieces of bubble gum do I have all together? (5+6=11) (12) There are 29 leaves on a tree. Eleven leaves fall off. How many leaves are left on the tree. (29-11=18) (13) Susan has 15 balloons for her mom’s birthday party. She decides to buy 4 more. How many balloons does she have now? (15+4=19) (14) Mike has a 64 piece puzzle. He only has four more pieces to put together. How many pieces has Mike already put together? (64-4=60) (15) Emma got 12 roses for her birthday. Her friend bought her 12 more. How many roses does she have now? 12+12=24) (16) Eric went to the beach and collected 9 shells. His brother broke 8 of his shells. How many shells does he have left? (9-8=1) (17) I have a bunch of 16 grapes. I ate 6. How many do I have left? (16-6=10) (18) Suzie has 12 dolls. One doll breaks. How many dolls does she have left? (12-1=11) (19) I have 3 cats. My friend has 5 cats. How many cats do we have all together? (3+5=8) (20) I baked 10 cookies. I gave 3 cookies to my teacher. How many cookies do I have left? (10-3=7) (21) There are 5 birds fling in the sky. Two birds stop flying and sit in a tree to rest. How many birds are still flying? (5-2=3) (22) I go to the mailbox and find a letter from my aunt. The next day there are two more letters for me. How many letters do I have all together? (1+2=3) (23) My family goes to the movies and buys one bag of popcorn. My friend decides to go and buys 3 more bags of popcorn. How many bags of popcorn do we have all together? (1+3=4) (24) I went to Disneyland and brought my camera. I took 3 pictures of Mickey Mouse and 5 pictures of Goofy. How many pictures did I take all together? (3+5=8) (25) My friends and I want to have a snowball fight. We started with 14 snowballs. I threw 9. How many do we have left? (14-9=5)