Question

you estimated the answer to be 8. where can you place the decimal point so your answer is close to 8?
3.8×2.2≈8
38×22=836
3.8×2.2=□

Explanation:

Step1: Count decimal places

$3.8$ has 1 decimal place, $2.2$ has 1 decimal place. Total: $1+1=2$ decimal places.

Step2: Adjust whole number product

Whole number product: $38 \times 22 = 836$. Move decimal left 2 places.
$836
ightarrow 8.36$

Step3: Match estimate check

Estimate was 8, $8.36$ is close to 8.

Answer:

$8.36$