Problem Solving with Numbers up to 20
šµļøāāļø Let's combine our reading skills and our addition skills up to 20 to crack some real-world story mysteries!
Concept
Word problems up to 20 are just like the smaller ones, but the numbers are a little bigger! Use the same great strategies. šÆ **The 4-Step Plan:** 1. **Read & Understand:** What is the story about? Are we grouping things together (addition)? 2. **Find the Numbers:** What are the important numbers? 3. **Choose a Strategy:** Does "Make 10" work best? Or "Count On"? 4. **Solve & Check:** Find the answer and see if it makes sense. **Example Story:** "Emma has 8 shiny stickers. She buys 7 more at the store. How many stickers does she have in all?" * **Numbers:** 8 and 7. * **Clue Words:** "in all" (means addition!). * **Sentence:** 8 + 7 = ? * **Strategy:** I know the double 7+7 is 14. 8 is one more, so 15! * **Answer:** Emma has 15 stickers.
Try it
Let's crack these story mysteries! **Instructions:** Read carefully, look for clues, and write the math sentence. **Story 1:** Farmer Brown has 9 chickens. Farmer Smith gives him 6 more chickens. How many chickens does Farmer Brown have now? * Math sentence: ___ + ___ = ___ * Answer: ___ chickens **Story 2:** There are 12 kids playing tag on the playground. 5 more kids join the game. How many kids are playing tag altogether? * Math sentence: ___ + ___ = ___ * Answer: ___ kids **Story 3:** You eat 8 grapes with your lunch. Then you eat 8 more grapes for a snack. How many grapes did you eat in total? * Answer: ___ grapes