Sasi Math (Revised for 1024)

Scroll:Real Number System >> Rational Numbers ( Exercise 1.1) >> saq (4324)

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 Subtraction of the following rational numbers. (ples use / )

7 - $\frac{4}{19}$

RHS =

Answer:_______________

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

5 - $\frac{3}{13}$

RHS =

Answer:_______________

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

7 - $\frac{4}{17}$

RHS =

Answer:_______________

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

12 - $\frac{2}{17}$

RHS =

Answer:_______________

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

5 - $\frac{4}{15}$

RHS =

Answer:_______________

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

9 - $\frac{4}{17}$

RHS =

Answer:_______________

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

7 - $\frac{4}{13}$

RHS =

Answer:_______________

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

11 - $\frac{3}{15}$

RHS =

Answer:_______________

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

9 - $\frac{2}{19}$

RHS =

Answer:_______________

10)

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

8 - $\frac{2}{17}$

RHS =

Answer:_______________

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

7 - $\frac{4}{19}$

RHS = Answer: $\frac{-129}{19}$

SOLUTION 1 :

To verify,

7 - $\frac{4}{19}$ = $\frac{4}{19}$ - 7

LHS = $\frac{7}{1}$ - $\frac{4}{19}$ = ( LCM of 1 and 19 is 19)

LHS	7x19	-	4x1	=	133	-	4	=	129
	1x19		19x1		19		19		19

$\frac{129}{19}$ = LHS

RHS = $\frac{4}{19}$ + $\frac{7}{1}$

RHS	4x1	-	7x19	=	4	-	133	=	-129
	19x1		19x1		19		19		19

- $\frac{129}{19}$ = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.

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

5 - $\frac{3}{13}$

RHS = Answer: $\frac{-62}{13}$

SOLUTION 1 :

To verify,

5 - $\frac{3}{13}$ = $\frac{3}{13}$ - 5

LHS = $\frac{5}{1}$ - $\frac{3}{13}$ = ( LCM of 1 and 13 is 13)

LHS	5x13	-	3x1	=	65	-	3	=	62
	1x13		13x1		13		13		13

$\frac{62}{13}$ = LHS

RHS = $\frac{3}{13}$ + $\frac{5}{1}$

RHS	3x1	-	5x13	=	3	-	65	=	-62
	13x1		13x1		13		13		13

- $\frac{62}{13}$ = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.

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

7 - $\frac{4}{17}$

RHS = Answer: $\frac{-115}{17}$

SOLUTION 1 :

To verify,

7 - $\frac{4}{17}$ = $\frac{4}{17}$ - 7

LHS = $\frac{7}{1}$ - $\frac{4}{17}$ = ( LCM of 1 and 17 is 17)

LHS	7x17	-	4x1	=	119	-	4	=	115
	1x17		17x1		17		17		17

$\frac{115}{17}$ = LHS

RHS = $\frac{4}{17}$ + $\frac{7}{1}$

RHS	4x1	-	7x17	=	4	-	119	=	-115
	17x1		17x1		17		17		17

- $\frac{115}{17}$ = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.

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

12 - $\frac{2}{17}$

RHS = Answer: -20 $\frac{2}{17}$

SOLUTION 1 :

To verify,

12 - $\frac{2}{17}$ = $\frac{2}{17}$ - 12

LHS = $\frac{12}{1}$ - $\frac{2}{17}$ = ( LCM of 1 and 17 is 17)

LHS	12x17	-	2x1	=	204	-	2	=	202
	1x17		17x1		17		17		17

20 $\frac{2}{17}$ = LHS

RHS = $\frac{2}{17}$ + $\frac{12}{1}$

RHS	2x1	-	12x17	=	2	-	204	=	-202
	17x1		17x1		17		17		17

-20 $\frac{2}{17}$ = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.

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

5 - $\frac{4}{15}$

RHS = Answer: $\frac{-71}{15}$

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	=	71
	1x15		15x1		15		15		15

$\frac{71}{15}$ = LHS

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

RHS	4x1	-	5x15	=	4	-	75	=	-71
	15x1		15x1		15		15		15

- $\frac{71}{15}$ = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.

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

9 - $\frac{4}{17}$

RHS = Answer: $\frac{-149}{17}$

SOLUTION 1 :

To verify,

9 - $\frac{4}{17}$ = $\frac{4}{17}$ - 9

LHS = $\frac{9}{1}$ - $\frac{4}{17}$ = ( LCM of 1 and 17 is 17)

LHS	9x17	-	4x1	=	153	-	4	=	149
	1x17		17x1		17		17		17

14 $\frac{9}{1}$ 7 = LHS

RHS = $\frac{4}{17}$ + $\frac{9}{1}$

RHS	4x1	-	9x17	=	4	-	153	=	-149
	17x1		17x1		17		17		17

-14 $\frac{9}{1}$ 7 = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.

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

7 - $\frac{4}{13}$

RHS = Answer: $\frac{-87}{13}$

SOLUTION 1 :

To verify,

7 - $\frac{4}{13}$ = $\frac{4}{13}$ - 7

LHS = $\frac{7}{1}$ - $\frac{4}{13}$ = ( LCM of 1 and 13 is 13)

LHS	7x13	-	4x1	=	91	-	4	=	87
	1x13		13x1		13		13		13

8 $\frac{7}{1}$ 3 = LHS

RHS = $\frac{4}{13}$ + $\frac{7}{1}$

RHS	4x1	-	7x13	=	4	-	91	=	-87
	13x1		13x1		13		13		13

-8 $\frac{7}{1}$ 3 = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.

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

11 - $\frac{3}{15}$

RHS = Answer: $\frac{-54}{5}$

SOLUTION 1 :

To verify,

11 - $\frac{3}{15}$ = $\frac{3}{15}$ - 11

LHS = $\frac{11}{1}$ - $\frac{3}{15}$ = ( LCM of 1 and 15 is 15)

LHS	11x15	-	3x1	=	165	-	3	=	162
	1x15		15x1		15		15		15

$\frac{54}{5}$ = LHS

RHS = $\frac{3}{15}$ + $\frac{11}{1}$

RHS	3x1	-	11x15	=	3	-	165	=	-162
	15x1		15x1		15		15		15

- $\frac{54}{5}$ = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.

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

9 - $\frac{2}{19}$

RHS = Answer: $\frac{-169}{19}$

SOLUTION 1 :

To verify,

9 - $\frac{2}{19}$ = $\frac{2}{19}$ - 9

LHS = $\frac{9}{1}$ - $\frac{2}{19}$ = ( LCM of 1 and 19 is 19)

LHS	9x19	-	2x1	=	171	-	2	=	169
	1x19		19x1		19		19		19

16 $\frac{9}{1}$ 9 = LHS

RHS = $\frac{2}{19}$ + $\frac{9}{1}$

RHS	2x1	-	9x19	=	2	-	171	=	-169
	19x1		19x1		19		19		19

-16 $\frac{9}{1}$ 9 = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.

10)

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

8 - $\frac{2}{17}$

RHS = Answer: $\frac{-134}{17}$

SOLUTION 1 :

To verify,

8 - $\frac{2}{17}$ = $\frac{2}{17}$ - 8

LHS = $\frac{8}{1}$ - $\frac{2}{17}$ = ( LCM of 1 and 17 is 17)

LHS	8x17	-	2x1	=	136	-	2	=	134
	1x17		17x1		17		17		17

$\frac{134}{17}$ = LHS

RHS = $\frac{2}{17}$ + $\frac{8}{1}$

RHS	2x1	-	8x17	=	2	-	136	=	-134
	17x1		17x1		17		17		17

- $\frac{134}{17}$ = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.