Word Problems with Unknown Sums and Differences - up to 10
š Welcome to the Word Problem Challenge! You have learned all the strategies. Now it's time to use them to solve any kind of story problem that comes your way!
Concept
You are now ready to solve all kinds of word problems.Let's review the ultimate problem-solving plan. šÆ ** The 4 - Step Word Problem Plan:** 1. ** Understand the Story:** Read the problem.Ask yourself: * Are groups being ** joined **? (This is addition). * Are things being ** taken away **? (This is "take away" subtraction). * Are we ** comparing ** two groups ? (This is "comparison" subtraction). 2. ** Find the Numbers:** What are the important numbers in the story ? 3. ** Choose a Strategy & Solve:** Pick your favorite tool from your toolbox(drawing, cubes, counting on / back, etc.) and find the answer. 4. ** Check Your Work:** Does your answer make sense in the story ? Let's do one together: "There are 5 bluebirds and 8 redbirds in a tree. How many more redbirds are there?" 1. ** Understand:** This is a ** comparison ** story. 2. ** Numbers:** 5 and 8. 3. ** Strategy:** Let's use subtraction. 8 - 5. I can count on from 5: "6, 7, 8". That's 3 steps. 4. ** Check:** The answer is 3. It makes sense that there are 3 more redbirds.
Try it
Let's start the challenge! ** Instructions:** Read each problem carefully.Decide what kind of story it is, then solve it. ** Problem 1:** A bus has 9 people on it. 4 people get off at the first stop.How many people are still on the bus ? * Type of story: ____________ * Answer: ___ ** Problem 2:** You read 6 pages of a book in the morning and 4 pages at night.How many pages did you read in total ? * Type of story: ____________ * Answer: ___ ** Problem 3:** A cat weighs 8 pounds.A kitten weighs 3 pounds.How much more does the cat weigh ? * Type of story: ____________ * Answer: ___ ** Problem 4:** You have 7 stickers.How many more do you need to have 10 stickers in all ? (This is a missing part problem!) * Hint: 7 + ___ = 10 * Answer: ___