Estimate the value of
\[ \frac{21 \times 3.86}{0.207} \]
Answer (2)
0.207 21 ∗ 3.86 = 0 , 207 81 , 06 ≈ 391.6
To estimate 0.207 21 × 3.86 , I rounded the values for simplicity: 21 remains 21, 3.86 rounds to 4, and 0.207 rounds to 0.2. After performing the calculation, the estimated value is approximately 420.
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