NAME ______________________________ DATE _______________

ACTIVITY

Two Different Solutions

• 1 Solve this problem. Show your solution, using clear and concise notation.

  145 + 229 = _______________

  Now look carefully at these two different solutions for the same problem. Answer the questions below.

  Solution 1	Solution 2
  145 + 229 _ 300 60 + 14 _ 374 table with 6 rows and 1 column , row1 column 1 , 145 , row2 column 1 , modified plus 229 with under bar below , row3 column 1 , 300 , row4 column 1 , 60 , row5 column 1 , modified plus 14 with under bar below , row6 column 1 , 374 , end table	1 4 1 5 + 229 _ 374 table with 3 rows and 1 column , row1 column 1 , 1 , 4 with 1 above , 5 , row2 column 1 , modified plus 229 with under bar below , row3 column 1 , 374 , end table

• 2 How would you explain to someone else how Solution 1 works? Where does the 300 come from? Where does the 60 come from? Where does the 14 come from?

• 3 How would you explain to someone else how Solution 2 works? Where does the 1 above the 4 in 145 come from?

Table of Contents