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 / )

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 / )

9 + $\frac{2}{18}$ = $\frac{2}{18}$ + 9

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:_______________

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

5 + $\frac{3}{19}$ = $\frac{3}{19}$ + 5

RHS =

Answer:_______________

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

7 + $\frac{3}{14}$ = $\frac{3}{14}$ + 7

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 / )

9 + $\frac{3}{15}$ = $\frac{3}{15}$ + 9

RHS =

Answer:_______________

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

7 + $\frac{3}{17}$ = $\frac{3}{17}$ + 7

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:_______________

10)

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

8 + $\frac{2}{19}$ = $\frac{2}{19}$ + 8

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: $\frac{50}{7}$

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 / )

9 + $\frac{2}{18}$ = $\frac{2}{18}$ + 9

RHS = Answer: $\frac{82}{9}$

SOLUTION 1 :

To verify,

9 + $\frac{2}{18}$ = $\frac{2}{18}$ + 9

LHS = $\frac{9}{1}$ + $\frac{2}{18}$ = ( LCM of 1 and 18 is 18)

LHS	9x18	+	2x1	=	162	+	2	=	164	$\frac{164}{18}$
	1x18		18x1		18		18		18

$\frac{82}{9}$ = LHS

RHS = $\frac{2}{18}$ + $\frac{9}{1}$

RHS	2x1	+	9x18 1x18	=	164	+	2	=	164	$\frac{164}{18}$
	18x1				18		18		18

$\frac{82}{9}$ = 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 + $\frac{2}{14}$ = $\frac{2}{14}$ + 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 / )

5 + $\frac{3}{19}$ = $\frac{3}{19}$ + 5

RHS = Answer: $\frac{98}{19}$

SOLUTION 1 :

To verify,

5 + $\frac{3}{19}$ = $\frac{3}{19}$ + 5

LHS = $\frac{5}{1}$ + $\frac{3}{19}$ = ( LCM of 1 and 19 is 19)

LHS	5x19	+	3x1	=	95	+	3	=	98	$\frac{98}{19}$
	1x19		19x1		19		19		19

$\frac{98}{19}$ = LHS

RHS = $\frac{3}{19}$ + $\frac{5}{1}$

RHS	3x1	+	5x19 1x19	=	98	+	3	=	98	$\frac{98}{19}$
	19x1				19		19		19

$\frac{98}{19}$ = 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 / )

7 + $\frac{3}{14}$ = $\frac{3}{14}$ + 7

RHS = Answer: $\frac{101}{14}$

SOLUTION 1 :

To verify,

7 + $\frac{3}{14}$ = $\frac{3}{14}$ + 7

LHS = $\frac{7}{1}$ + $\frac{3}{14}$ = ( LCM of 1 and 14 is 14)

LHS	7x14	+	3x1	=	98	+	3	=	101	$\frac{101}{14}$
	1x14		14x1		14		14		14

$\frac{101}{14}$ = LHS

RHS = $\frac{3}{14}$ + $\frac{7}{1}$

RHS	3x1	+	7x14 1x14	=	101	+	3	=	101	$\frac{101}{14}$
	14x1				14		14		14

$\frac{101}{14}$ = 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 / )

9 + $\frac{3}{15}$ = $\frac{3}{15}$ + 9

RHS = Answer: $\frac{46}{5}$

SOLUTION 1 :

To verify,

9 + $\frac{3}{15}$ = $\frac{3}{15}$ + 9

LHS = $\frac{9}{1}$ + $\frac{3}{15}$ = ( LCM of 1 and 15 is 15)

LHS	9x15	+	3x1	=	135	+	3	=	138	$\frac{138}{15}$
	1x15		15x1		15		15		15

$\frac{46}{5}$ = LHS

RHS = $\frac{3}{15}$ + $\frac{9}{1}$

RHS	3x1	+	9x15 1x15	=	138	+	3	=	138	$\frac{138}{15}$
	15x1				15		15		15

$\frac{46}{5}$ = 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 / )

7 + $\frac{3}{17}$ = $\frac{3}{17}$ + 7

RHS = Answer: $\frac{122}{17}$

SOLUTION 1 :

To verify,

7 + $\frac{3}{17}$ = $\frac{3}{17}$ + 7

LHS = $\frac{7}{1}$ + $\frac{3}{17}$ = ( LCM of 1 and 17 is 17)

LHS	7x17	+	3x1	=	119	+	3	=	122	$\frac{122}{17}$
	1x17		17x1		17		17		17

$\frac{122}{17}$ = LHS

RHS = $\frac{3}{17}$ + $\frac{7}{1}$

RHS	3x1	+	7x17 1x17	=	122	+	3	=	122	$\frac{122}{17}$
	17x1				17		17		17

$\frac{122}{17}$ = 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.

10)

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

8 + $\frac{2}{19}$ = $\frac{2}{19}$ + 8

RHS = Answer: $\frac{154}{19}$

SOLUTION 1 :

To verify,

8 + $\frac{2}{19}$ = $\frac{2}{19}$ + 8

LHS = $\frac{8}{1}$ + $\frac{2}{19}$ = ( LCM of 1 and 19 is 19)

LHS	8x19	+	2x1	=	152	+	2	=	154	$\frac{154}{19}$
	1x19		19x1		19		19		19

$\frac{154}{19}$ = LHS

RHS = $\frac{2}{19}$ + $\frac{8}{1}$

RHS	2x1	+	8x19 1x19	=	154	+	2	=	154	$\frac{154}{19}$
	19x1				19		19		19

$\frac{154}{19}$ = RHS

LHS = RHS

Hense, Commutative property is true for addition.