Question

4.Xavier was multiplying 1.5 0.82. He knew that 15 · 82 = 1230.What is 1.5 0.82?0.0123B.0.123C.A.1.23D.12.3Explain or show your thinking.

Answer 1

ANSWER

1.23

EXPLANATION:

Given information:

$15\text{ }\times0.82$

Step 1: Convert the decimals into fraction

$\begin{gathered} 1.5\text{ can be expressed as }\frac{150}{100} \\ 0.82\text{ can be expressed as }\frac{0.82}{100} \end{gathered}$$\begin{gathered} \frac{150}{100}\text{ }\times\text{ }\frac{82}{100} \\ \\ \frac{150\times82}{100\times100} \\ \\ \frac{12300}{10000}\text{ = 1.23} \end{gathered}$

Hence, the answer is 2.3