1. 2. Using your skills of ESTIMATION, determine if each number, sum or difference is less than (<) 1/2, approximately (≈) 1/2, approximately (≈) 1, or greater than (>) 1. DO NOT SOLVE. 3. Using the tool, drag each to the correct column. There should be three (3) in each column. 4. Select one from each column and an explanation of how you estimated that particular sum or difference. 5.