Question

Match the following results.

• A. $530$
• B. $53$
• C. $230,000$
• D. $470$

Answer 1

$\bullet \underset{–}{53\times 10=53.0\times 10}$

We know multiplication of $53.0$ by $10$ moves the decimal point $1$ unit to the right.

$\therefore 53\times 10=53.0\times 10=530.0=530$


$\bullet \underset{–}{530÷10=530.0÷10}$

We know division of $530.0$ by $10$ moves the decimal point $1$ unit to the left.

$\therefore 530÷10=530.0÷10=53.00=53$


$\bullet \underset{–}{23\times {10}^4=23.0\times {10}^4}$

We know multiplication of $23.0$ by ${10}^4$ moves the decimal point $4$ units to the right.

Hence,
$23\times {10}^4$
$=23.0\times {10}^4$
$=230,000.0$
$=230,000$


$\bullet \underset{–}{470,000÷{10}^3=470,000.0÷{10}^3}$

We know division of $470,000.0$ by ${10}^3$ moves the decimal point $3$ units to the left.

Hence,
$470,000÷{10}^3$
$=470,000.0÷{10}^3$
$=470.0000$
$=470$