Sasi Math (Revised for 1024)

Scroll:Real Number System >> Rational Numbers ( Exercise 1.1) >> saq (4323)

Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

8 + $\frac{2}{14}$ = $\frac{2}{14}$ + 8

RHS =

Answer:_______________

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

6 + $\frac{2}{19}$ = $\frac{2}{19}$ + 6

RHS =

Answer:_______________

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

10 + $\frac{3}{15}$ = $\frac{3}{15}$ + 10

RHS =

Answer:_______________

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

5 + $\frac{4}{15}$ = $\frac{4}{15}$ + 5

RHS =

Answer:_______________

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

8 + $\frac{3}{16}$ = $\frac{3}{16}$ + 8

RHS =

Answer:_______________

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

6 + $\frac{2}{16}$ = $\frac{2}{16}$ + 6

RHS =

Answer:_______________

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

6 + $\frac{2}{13}$ = $\frac{2}{13}$ + 6

RHS =

Answer:_______________

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

7 + $\frac{2}{14}$ = $\frac{2}{14}$ + 7

RHS =

Answer:_______________

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

6 + $\frac{2}{15}$ = $\frac{2}{15}$ + 6

RHS =

Answer:_______________

10)

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

5 + $\frac{2}{18}$ = $\frac{2}{18}$ + 5

RHS =

Answer:_______________

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

8 + $\frac{2}{14}$ = $\frac{2}{14}$ + 8

RHS = Answer: $\frac{57}{7}$

SOLUTION 1 :

To verify,

8 + $\frac{2}{14}$ = $\frac{2}{14}$ + 8

LHS = $\frac{8}{1}$ + $\frac{2}{14}$ = ( LCM of 1 and 14 is 14)

LHS	8x14	+	2x1	=	112	+	2	=	114	$\frac{114}{14}$
	1x14		14x1		14		14		14

$\frac{57}{7}$ = LHS

RHS = $\frac{2}{14}$ + $\frac{8}{1}$

RHS	2x1	+	8x14 1x14	=	114	+	2	=	114	$\frac{114}{14}$
	14x1				14		14		14

$\frac{57}{7}$ = RHS

LHS = RHS

Hense, Commutative property is true for addition.

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

6 + $\frac{2}{19}$ = $\frac{2}{19}$ + 6

RHS = Answer: $\frac{116}{19}$

SOLUTION 1 :

To verify,

6 + $\frac{2}{19}$ = $\frac{2}{19}$ + 6

LHS = $\frac{6}{1}$ + $\frac{2}{19}$ = ( LCM of 1 and 19 is 19)

LHS	6x19	+	2x1	=	114	+	2	=	116	$\frac{116}{19}$
	1x19		19x1		19		19		19

$\frac{116}{19}$ = LHS

RHS = $\frac{2}{19}$ + $\frac{6}{1}$

RHS	2x1	+	6x19 1x19	=	116	+	2	=	116	$\frac{116}{19}$
	19x1				19		19		19

$\frac{116}{19}$ = RHS

LHS = RHS

Hense, Commutative property is true for addition.

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

10 + $\frac{3}{15}$ = $\frac{3}{15}$ + 10

RHS = Answer: $\frac{51}{5}$

SOLUTION 1 :

To verify,

10 + $\frac{3}{15}$ = $\frac{3}{15}$ + 10

LHS = $\frac{10}{1}$ + $\frac{3}{15}$ = ( LCM of 1 and 15 is 15)

LHS	10x15	+	3x1	=	150	+	3	=	153	15 $\frac{3}{15}$
	1x15		15x1		15		15		15

$\frac{51}{5}$ = LHS

RHS = $\frac{3}{15}$ + $\frac{10}{1}$

RHS	3x1	+	10x15 1x15	=	153	+	3	=	153	15 $\frac{3}{15}$
	15x1				15		15		15

$\frac{51}{5}$ = RHS

LHS = RHS

Hense, Commutative property is true for addition.

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

5 + $\frac{4}{15}$ = $\frac{4}{15}$ + 5

RHS = Answer: $\frac{79}{15}$

SOLUTION 1 :

To verify,

5 + $\frac{4}{15}$ = $\frac{4}{15}$ + 5

LHS = $\frac{5}{1}$ + $\frac{4}{15}$ = ( LCM of 1 and 15 is 15)

LHS	5x15	+	4x1	=	75	+	4	=	79	$\frac{79}{15}$
	1x15		15x1		15		15		15

$\frac{79}{15}$ = LHS

RHS = $\frac{4}{15}$ + $\frac{5}{1}$

RHS	4x1	+	5x15 1x15	=	79	+	4	=	79	$\frac{79}{15}$
	15x1				15		15		15

$\frac{79}{15}$ = RHS

LHS = RHS

Hense, Commutative property is true for addition.

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

8 + $\frac{3}{16}$ = $\frac{3}{16}$ + 8

RHS = Answer: $\frac{131}{16}$

SOLUTION 1 :

To verify,

8 + $\frac{3}{16}$ = $\frac{3}{16}$ + 8

LHS = $\frac{8}{1}$ + $\frac{3}{16}$ = ( LCM of 1 and 16 is 16)

LHS	8x16	+	3x1	=	128	+	3	=	131	$\frac{131}{16}$
	1x16		16x1		16		16		16

$\frac{131}{16}$ = LHS

RHS = $\frac{3}{16}$ + $\frac{8}{1}$

RHS	3x1	+	8x16 1x16	=	131	+	3	=	131	$\frac{131}{16}$
	16x1				16		16		16

$\frac{131}{16}$ = RHS

LHS = RHS

Hense, Commutative property is true for addition.

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

6 + $\frac{2}{16}$ = $\frac{2}{16}$ + 6

RHS = Answer: $\frac{49}{8}$

SOLUTION 1 :

To verify,

6 + $\frac{2}{16}$ = $\frac{2}{16}$ + 6

LHS = $\frac{6}{1}$ + $\frac{2}{16}$ = ( LCM of 1 and 16 is 16)

LHS	6x16	+	2x1	=	96	+	2	=	98	$\frac{98}{16}$
	1x16		16x1		16		16		16

$\frac{49}{8}$ = LHS

RHS = $\frac{2}{16}$ + $\frac{6}{1}$

RHS	2x1	+	6x16 1x16	=	98	+	2	=	98	$\frac{98}{16}$
	16x1				16		16		16

$\frac{49}{8}$ = RHS

LHS = RHS

Hense, Commutative property is true for addition.

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

6 + $\frac{2}{13}$ = $\frac{2}{13}$ + 6

RHS = Answer: $\frac{80}{13}$

SOLUTION 1 :

To verify,

6 + $\frac{2}{13}$ = $\frac{2}{13}$ + 6

LHS = $\frac{6}{1}$ + $\frac{2}{13}$ = ( LCM of 1 and 13 is 13)

LHS	6x13	+	2x1	=	78	+	2	=	80	$\frac{80}{13}$
	1x13		13x1		13		13		13

$\frac{80}{13}$ = LHS

RHS = $\frac{2}{13}$ + $\frac{6}{1}$

RHS	2x1	+	6x13 1x13	=	80	+	2	=	80	$\frac{80}{13}$
	13x1				13		13		13

$\frac{80}{13}$ = RHS

LHS = RHS

Hense, Commutative property is true for addition.

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

7 + $\frac{2}{14}$ = $\frac{2}{14}$ + 7

RHS = Answer: $\frac{50}{7}$

SOLUTION 1 :

To verify,

7 + $\frac{2}{14}$ = $\frac{2}{14}$ + 7

LHS = $\frac{7}{1}$ + $\frac{2}{14}$ = ( LCM of 1 and 14 is 14)

LHS	7x14	+	2x1	=	98	+	2	=	100	$\frac{100}{14}$
	1x14		14x1		14		14		14

$\frac{50}{7}$ = LHS

RHS = $\frac{2}{14}$ + $\frac{7}{1}$

RHS	2x1	+	7x14 1x14	=	100	+	2	=	100	$\frac{100}{14}$
	14x1				14		14		14

$\frac{50}{7}$ = RHS

LHS = RHS

Hense, Commutative property is true for addition.

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

6 + $\frac{2}{15}$ = $\frac{2}{15}$ + 6

RHS = Answer: 9 $\frac{2}{15}$

SOLUTION 1 :

To verify,

6 + $\frac{2}{15}$ = $\frac{2}{15}$ + 6

LHS = $\frac{6}{1}$ + $\frac{2}{15}$ = ( LCM of 1 and 15 is 15)

LHS	6x15	+	2x1	=	90	+	2	=	92	9 $\frac{2}{15}$
	1x15		15x1		15		15		15

9 $\frac{2}{15}$ = LHS

RHS = $\frac{2}{15}$ + $\frac{6}{1}$

RHS	2x1	+	6x15 1x15	=	92	+	2	=	92	9 $\frac{2}{15}$
	15x1				15		15		15

9 $\frac{2}{15}$ = RHS

LHS = RHS

Hense, Commutative property is true for addition.

10)

Verify whether commutative property is satisfied for addition of the following rational numbers. (ples use / )

5 + $\frac{2}{18}$ = $\frac{2}{18}$ + 5

RHS = Answer: $\frac{46}{9}$

SOLUTION 1 :

To verify,

5 + $\frac{2}{18}$ = $\frac{2}{18}$ + 5

LHS = $\frac{5}{1}$ + $\frac{2}{18}$ = ( LCM of 1 and 18 is 18)

LHS	5x18	+	2x1	=	90	+	2	=	92	9 $\frac{2}{18}$
	1x18		18x1		18		18		18

$\frac{46}{9}$ = LHS

RHS = $\frac{2}{18}$ + $\frac{5}{1}$

RHS	2x1	+	5x18 1x18	=	92	+	2	=	92	9 $\frac{2}{18}$
	18x1				18		18		18

$\frac{46}{9}$ = RHS

LHS = RHS

Hense, Commutative property is true for addition.