Week 4 – key Numbers 25.2 Calculate Approximate Precise Estimate Tally Constant Continuous Discrete Round Down 25.3 1. The incidence of car accidents last year declined / dropped / fell. 2. We estimated what the final … 3. … in the order of the magnitude 4. … helped us calculate … 5. Subtracting x from y will help… 6. … did not tally with those … 25.4 1 workings 2 arrived 3 calculations 4 area 5 figures 6 values 7 variables