Question

multiply: 8.2 × 24.8
2.0366
2033.6
203.36
203.46

Explanation:

Step1: Multiply without decimals

Treat \(8.2\) as \(82\) and \(24.8\) as \(248\). Then \(82\times248 = 82\times(200 + 40+8)=82\times200+82\times40 + 82\times8=16400+3280 + 656 = 20336\).

Step2: Count decimal places

\(8.2\) has 1 decimal place and \(24.8\) has 1 decimal place, so total decimal places is \(1 + 1=2\).

Step3: Place decimal

Move the decimal point 2 places to the left in \(20336\), getting \(203.36\).

Answer:

203.36