Test questions for developing original subtraction stories (2nd grade).

📚 Quick Study Guide

🔢 Subtraction Basics: Subtraction is taking away a number from another. The result is called the difference. For example, $5 - 2 = 3$. ✍️ Story Problems: These are word problems where you need to figure out what is being subtracted from what. Keywords like 'take away', 'left', and 'less' often indicate subtraction. 💡 Creating Stories: To make your own story, think of a starting amount and then what happens to reduce that amount. Be creative! ➕ Checking Your Work: You can check your subtraction by adding the difference back to the number you subtracted. The result should be the original number. For example, if $5-2=3$, then $3+2=5$. ✏️ Units: Always include the units in your answer (e.g., apples, toys, etc.).

🧮 Practice Quiz

1. What key word most indicates subtraction?
   1. Add
   2. Take away
   3. Plus
2. Lily had 7 flowers and gave 3 to her friend. How many does she have left?
   1. 10 flowers
   2. 4 flowers
   3. 3 flowers
3. Tom had 12 cookies, and his brother ate some. Now Tom has 5 cookies. How many cookies did Tom's brother eat?
   1. 7 cookies
   2. 17 cookies
   3. 5 cookies
4. Sarah baked 15 cupcakes, but 6 were burnt. How many good cupcakes does she have?
   1. 21 cupcakes
   2. 9 cupcakes
   3. 6 cupcakes
5. Ben collected 20 rocks but lost 8 on the way home. How many rocks does Ben have now?
   1. 28 rocks
   2. 12 rocks
   3. 8 rocks
6. Emily had 11 stickers and used 4 to decorate her notebook. How many stickers are left?
   1. 15 stickers
   2. 7 stickers
   3. 4 stickers
7. A farmer had 18 apples but sold 9 at the market. How many apples does the farmer have now?
   1. 27 apples
   2. 9 apples
   3. 18 apples