Final answer:
Rob recorded a total of 1.2 centimeters of snow during the snowstorm by adding the snowfall from each day which was 1/5 cm on Wednesday, 1/2 cm on Thursday, and 1/2 cm on Friday.
Step-by-step explanation:
The total centimeters of snow Rob recorded during the snowstorm can be found by adding the snowfall for each day. On Wednesday, Rob recorded 1/5 of a centimeter, on Thursday he recorded 1/2 of a centimeter, and on Friday another 1/2 of a centimeter. To find the total snowfall, we add these amounts:
Total Snowfall = 1/5 cm + 1/2 cm + 1/2 cm
Before adding, it's important to have a common denominator. Both 2 and 5 are factors of 10, so we can use 10 as a common denominator:
Total Snowfall = (2/10) cm + (5/10) cm + (5/10) cm
Now we can add the fractions:
Total Snowfall = (2+5+5)/10 cm
Total Snowfall = 12/10 cm
Total Snowfall = 1.2 cm
Therefore, Rob recorded a total of 1.2 centimeters of snow during the storm.