Question

Estimate the answer to 4.8 x 47.1

Answer 1

226,08 Answer of this question is calculating with multipling each other.

Answer 2

235

Explanation:

When estimating the product of two decimals, first round the decimals to their nearest whole numbers.

• If the number in the tenth place is less than 5, round down to the nearest whole number.

• If the number in the tenth place is 5 or more, round up to the nearest whole number.

Therefore,

• 4.8 ≈ 5
• 47.1 ≈ 47

So an estimate of the product of the two decimals is:

`\implies 4.8 * 47.1 \approx 5 * 47`

Partition 47 into tens and units:

`\implies 5 * 47 = 5 * (40 + 7)`

Apply the distributive property of multiplication over addition:

`\begin{aligned}\implies 5 * (40 + 7) &= (5 * 40) + (5 * 7)\\&=200+35\\&=235\end{aligned}`

Therefore:

`\boxed{4.8 * 47.1 \approx 235}`