Mixed Practice: Subtract 1-Digit from 2-Digit
š The Sneaky Mix-Up! Some of these problems require borrowing... but some of them don't! Keep your guard up and test the rhyme every time.
Concept
You know how to subtract with borrowing, and without. Now the teacher is going to mix them up to see if you are paying attention. šÆ **The "Check the Floor" Strategy:** Before you cross anything out, you MUST look at the Ones column. * "More on top? No need to stop!" (Example: 48 - 3. 8 is bigger than 3. Just subtract normally!). * "More on the floor? Go next door and get 10 more!" (Example: 43 - 8. 8 is bigger than 3. You MUST borrow!).
Try it
To borrow, or not to borrow? That is the question! **Instructions:** Check the Ones column. Do you need to borrow? Yes or No? Then solve! **Problem 1:** 4 6 - 2 -------- * Need to borrow? Yes / No (6 is bigger than 2!) * Answer: ___ **Problem 2:** 4 6 - 8 -------- * Need to borrow? Yes / No (8>6! Go next door!) * Answer: ___ **Problem 3:** 8 1 - 9 -------- * Need to borrow? Yes / No * Answer: ___ **Problem 4:** 5 9 - 9 -------- * Need to borrow? Yes / No (Hint: "Numbers the same? Zero's the game!") * Answer: ___