Final answer:
The sum of 1.49 cg and 0.295 g is 0.3099 g, which when rounded to the least precise measurement (35.5 g, to the tenths place), results in 0.3 g.
Step-by-step explanation:
To solve the addition (1.49 cg) + (0.295 g), you first need to convert all quantities to the same unit. Here, we will convert centigrams to grams. Since 1 centigram (cg) is equal to 0.01 grams (g), we multiply 1.49 cg by 0.01 to convert it to grams:
1.49 cg * 0.01 = 0.0149 g.
Now that both quantities are in grams, we can directly add them:
0.0149 g + 0.295 g = 0.3099 g.
However, we must consider the rule for significant figures. The quantity 35.5 g is the least precise measurement given with a precision to the tenths place. Therefore, we should round our final answer to the tenths place as well:
The final answer, rounded to the tenths place, is 0.3 g.