To round 494.37 to 1 significant figure, it becomes 400. To round 5.12 to 1 significant figure, it becomes 5. When we divide 400 by 5, we get 80.
For rounding 1 significant figure, we look at the first non-zero digit in the number. In this case, the first non-zero digit is 4. We keep that digit and drop all the digits to the right of it. So, 494.37 becomes 400.
Similarly, for 5.12, the first non-zero digit is 5. We keep that digit and drop all the digits to the right of it. So, 5.12 becomes 5.
Now, we divide 400 by 5, which gives us 80.
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Answer:
100
Step-by-step explanation:
rounding to 1 sig figure
494.37 ≈ 500
5.12 ≈ 5
Estimating
500 ÷ 5 = 100