5 Marks Questions

Question 15 Marks

Simplify the following: $4+\frac{1}{5}\Big[\big\{-10\times(25-\overline{13-3})\big\}\div(-5)\Big]$

Answer

$4+\frac{1}{5}\Big[\big\{-10\times(25-\overline{13-3})\big\}\div(-5)\Big]$
$=4+\frac{1}{5}\big[\{-10\times(25-10)\}\div(-5)\big]$
$=4+\frac{1}{5}\big[\{-10\times(15)\}\div(-5)\big]$
$=4+\frac{1}{5}\big[(-150)\div(-5)\big]$
$=4+\frac{1}{5}\big[30\big]$
$=4+6$
$=10$
$\therefore\ 4+\frac{1}{5}\Big[\big\{-10\times(25-\overline{13-3})\big\}\div(-5)\Big]=10$

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Question 25 Marks

Complete the following multiplication table:

Second number
First number	$x$	$-4$	$-3$	$-2$	$-1$	$0$	$1$	$2$	$3$	$4$
	$-4$
	$-3$
	$-2$
	$-1$
	$0$
	$1$
	$2$
	$3$
	$4$

ls the multiplication table symmetrical about the diagonal joining the upper left corner to the lower right corner?

Answer

Second number
First number	$x$	$-4$	$-3$	$-2$	$-1$	$0$	$1$	$2$	$3$	$4$
	$-4$	$16$	$12$	$8$	$4$	$0$	$-4$	$-8$	$-12$	$-16$
	$-3$	$12$	$9$	$6$	$3$	$0$	$-3$	$-6$	$-9$	$-12$
	$-2$	$8$	$6$	$4$	$2$	$0$	$-2$	$-4$	$-6$	$-8$
	$-1$	$4$	$3$	$2$	$1$	$0$	$-1$	$-2$	$-3$	$-4$
	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$0$
	$1$	$-4$	$-3$	$-2$	$-1$	$0$	$1$	$2$	$3$	$4$
	$2$	$-8$	$-6$	$-4$	$-2$	$0$	$2$	$4$	$6$	$8$
	$3$	$-12$	$-9$	$-6$	$-3$	$0$	$3$	$6$	$9$	$12$
	$4$	$-16$	$-12$	$-8$	$-4$	$0$	$4$	$8$	$12$	$16$

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Question 35 Marks

Complete the following multiplication table:

Answer

Yes

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Question 45 Marks

A milk man earns a profit of $₹ 25$ on every litre of milk he sells and loses $₹ 30$ on every litre that is not sold. If one a particular day he sells 20 litres of milk and is left with 5 litres of milk unsold, then determine his profit or loss.

Answer

$₹ 350$

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Question 55 Marks

A unit test paper contains 20 questions. If 5 marks are awarded for every correct answer, 2 marks are deducted for every wrong answer and 1 mark is deducted for every unanswered question. If Romit got 12 correct answers, 5 wrong answers and left 3 questions unanswered. What is his score?

Answer

47

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Maths 5 Marks Questions

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