Question

Find the square root of each of the following correct to three places of decimal.
$17$
$1.7$
$2.5$
$\frac{7}{8}$

• A. $4.153;1.304;1.581;0.935$
• B. $4.123;1.304;1.581;0.995$
• C. $4.123;1.304;1.581;0.935$
• D. $4.123;1.304;1.501;0.935$

Answer 1

The correct option is C $4.123;1.304;1.581;0.935$

$17$

	$4.123$
$4$ $+4$	$17$ $16$
$822$ $+2$	$100$ $81$
$8243$	$1900$ $1644$
	$25600$ $24729$ $871$

$\therefore$ The square root of $17=4.123$
$1.7$

$0$	$1.303$
$1$ $+1$	$1.7$ $1$
$23$ $+3$	$70$ $69$
$2603$	$10000$ $7809$
	$1191$

$\therefore$ The square root of $1.7=1.303$
$2.5$

$0$	$1.581$
$1$ $+1$	$2.5$ $1$
$25$ $+5$	$150$ $125$
$308$ $+8$	$2500$ $2464$
$3161$	$3600$ $3161$ $439$

$\therefore$ The square root of $2.5=1.581$
$\frac{7}{8}$

$8$	$70$ $64$	$0.875$
	$60$ $56$
	$40$ $40$ $0$

	$0.935$
$0$	$0.875$ $0$
$9$ $9$	$87$ $81$
$183$ $+3$	$650$ $549$
$1865$	$10100$ $9325$
	$925$

$\therefore$ The square root of $\frac{7}{8}=0.935$