Use Place Value to Add (No Regrouping)
š„ Stack them up like pancakes! Once you can see the blocks in your head, you can write the numbers directly on top of each other.
Concept
This is the way almost all adults do math on paper! It's called vertical addition (or stacking). šÆ **The Stacking Rules:** **Example: 42 + 35** 1. **Line them up perfectly!** Write the 42, then write the 35 perfectly underneath it. The Ones must be stacked in the "Ones Column", and the Tens in the "Tens Column". 2. **Draw the line:** Draw a line underneath, like a shelf for your answer. 3. **Start on the RIGHT!** We ALWAYS start in the Ones column on the right side. * Add the ones: 2 + 5 = 7. Write the 7 under the Ones column. 4. **Move to the LEFT!** Now add the Tens column. * Add the tens: 4 + 3 = 7. Write the 7 under the Tens column. Answer: **77**!
Try it
Stack the pancakes perfectly! **Instructions:** Add the right column first, then the left column! **Problem 1:** 5 3 + 2 4 --------- * Ones (Right column): 3 + 4 = ___ * Tens (Left column): 5 + 2 = ___ * Total Answer: ___ **Problem 2:** 6 1 + 3 7 --------- * Answer: ___ **Problem 3:** 2 0 + 4 8 --------- * Answer: ___ **Problem 4:** 1 5 + 8 2 --------- * Answer: ___