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 - $\frac{2}{19}$

RHS =

Answer:_______________

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

9 - $\frac{3}{16}$

RHS =

Answer:_______________

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

10 - $\frac{2}{14}$

RHS =

Answer:_______________

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

6 - $\frac{2}{18}$

RHS =

Answer:_______________

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

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

RHS =

Answer:_______________

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

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

RHS =

Answer:_______________

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

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

RHS =

Answer:_______________

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

10 - $\frac{2}{15}$

RHS =

Answer:_______________

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

9 - $\frac{2}{16}$

RHS =

Answer:_______________

10)

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

11 - $\frac{3}{16}$

RHS =

Answer:_______________

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

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

RHS = Answer: $\frac{-131}{19}$

SOLUTION 1 :

To verify,

7 - $\frac{2}{19}$ = $\frac{2}{19}$ - 7

LHS = $\frac{7}{1}$ - $\frac{2}{19}$ = ( LCM of 1 and 19 is 19)

LHS	7x19	-	2x1	=	133	-	2	=	131
	1x19		19x1		19		19		19

$\frac{131}{19}$ = LHS

RHS = $\frac{2}{19}$ + $\frac{7}{1}$

RHS	2x1	-	7x19	=	2	-	133	=	-131
	19x1		19x1		19		19		19

- $\frac{131}{19}$ = 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 / )

9 - $\frac{3}{16}$

RHS = Answer: $\frac{-141}{16}$

SOLUTION 1 :

To verify,

9 - $\frac{3}{16}$ = $\frac{3}{16}$ - 9

LHS = $\frac{9}{1}$ - $\frac{3}{16}$ = ( LCM of 1 and 16 is 16)

LHS	9x16	-	3x1	=	144	-	3	=	141
	1x16		16x1		16		16		16

$\frac{141}{16}$ = LHS

RHS = $\frac{3}{16}$ + $\frac{9}{1}$

RHS	3x1	-	9x16	=	3	-	144	=	-141
	16x1		16x1		16		16		16

- $\frac{141}{16}$ = 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 / )

10 - $\frac{2}{14}$

RHS = Answer: $\frac{-69}{7}$

SOLUTION 1 :

To verify,

10 - $\frac{2}{14}$ = $\frac{2}{14}$ - 10

LHS = $\frac{10}{1}$ - $\frac{2}{14}$ = ( LCM of 1 and 14 is 14)

LHS	10x14	-	2x1	=	140	-	2	=	138
	1x14		14x1		14		14		14

$\frac{69}{7}$ = LHS

RHS = $\frac{2}{14}$ + $\frac{10}{1}$

RHS	2x1	-	10x14	=	2	-	140	=	-138
	14x1		14x1		14		14		14

- $\frac{69}{7}$ = 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 / )

6 - $\frac{2}{18}$

RHS = Answer: $\frac{-53}{9}$

SOLUTION 1 :

To verify,

6 - $\frac{2}{18}$ = $\frac{2}{18}$ - 6

LHS = $\frac{6}{1}$ - $\frac{2}{18}$ = ( LCM of 1 and 18 is 18)

LHS	6x18	-	2x1	=	108	-	2	=	106
	1x18		18x1		18		18		18

$\frac{53}{9}$ = LHS

RHS = $\frac{2}{18}$ + $\frac{6}{1}$

RHS	2x1	-	6x18	=	2	-	108	=	-106
	18x1		18x1		18		18		18

- $\frac{53}{9}$ = 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 / )

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

RHS = Answer: $\frac{-110}{19}$

SOLUTION 1 :

To verify,

6 - $\frac{4}{19}$ = $\frac{4}{19}$ - 6

LHS = $\frac{6}{1}$ - $\frac{4}{19}$ = ( LCM of 1 and 19 is 19)

LHS	6x19	-	4x1	=	114	-	4	=	110
	1x19		19x1		19		19		19

$\frac{110}{19}$ = LHS

RHS = $\frac{4}{19}$ + $\frac{6}{1}$

RHS	4x1	-	6x19	=	4	-	114	=	-110
	19x1		19x1		19		19		19

- $\frac{110}{19}$ = 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 / )

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

RHS = Answer: $\frac{-186}{19}$

SOLUTION 1 :

To verify,

10 - $\frac{4}{19}$ = $\frac{4}{19}$ - 10

LHS = $\frac{10}{1}$ - $\frac{4}{19}$ = ( LCM of 1 and 19 is 19)

LHS	10x19	-	4x1	=	190	-	4	=	186
	1x19		19x1		19		19		19

$\frac{186}{19}$ = LHS

RHS = $\frac{4}{19}$ + $\frac{10}{1}$

RHS	4x1	-	10x19	=	4	-	190	=	-186
	19x1		19x1		19		19		19

- $\frac{186}{19}$ = 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 / )

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

RHS = Answer: $\frac{-226}{19}$

SOLUTION 1 :

To verify,

12 - $\frac{2}{19}$ = $\frac{2}{19}$ - 12

LHS = $\frac{12}{1}$ - $\frac{2}{19}$ = ( LCM of 1 and 19 is 19)

LHS	12x19	-	2x1	=	228	-	2	=	226
	1x19		19x1		19		19		19

$\frac{226}{19}$ = LHS

RHS = $\frac{2}{19}$ + $\frac{12}{1}$

RHS	2x1	-	12x19	=	2	-	228	=	-226
	19x1		19x1		19		19		19

- $\frac{226}{19}$ = 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 / )

10 - $\frac{2}{15}$

RHS = Answer: $\frac{-148}{15}$

SOLUTION 1 :

To verify,

10 - $\frac{2}{15}$ = $\frac{2}{15}$ - 10

LHS = $\frac{10}{1}$ - $\frac{2}{15}$ = ( LCM of 1 and 15 is 15)

LHS	10x15	-	2x1	=	150	-	2	=	148
	1x15		15x1		15		15		15

$\frac{148}{15}$ = LHS

RHS = $\frac{2}{15}$ + $\frac{10}{1}$

RHS	2x1	-	10x15	=	2	-	150	=	-148
	15x1		15x1		15		15		15

- $\frac{148}{15}$ = 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 - $\frac{2}{16}$

RHS = Answer: $\frac{-71}{8}$

SOLUTION 1 :

To verify,

9 - $\frac{2}{16}$ = $\frac{2}{16}$ - 9

LHS = $\frac{9}{1}$ - $\frac{2}{16}$ = ( LCM of 1 and 16 is 16)

LHS	9x16	-	2x1	=	144	-	2	=	142
	1x16		16x1		16		16		16

$\frac{71}{8}$ = LHS

RHS = $\frac{2}{16}$ + $\frac{9}{1}$

RHS	2x1	-	9x16	=	2	-	144	=	-142
	16x1		16x1		16		16		16

- $\frac{71}{8}$ = 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 / )

11 - $\frac{3}{16}$

RHS = Answer: -17 $\frac{3}{16}$

SOLUTION 1 :

To verify,

11 - $\frac{3}{16}$ = $\frac{3}{16}$ - 11

LHS = $\frac{11}{1}$ - $\frac{3}{16}$ = ( LCM of 1 and 16 is 16)

LHS	11x16	-	3x1	=	176	-	3	=	173
	1x16		16x1		16		16		16

17 $\frac{3}{16}$ = LHS

RHS = $\frac{3}{16}$ + $\frac{11}{1}$

RHS	3x1	-	11x16	=	3	-	176	=	-173
	16x1		16x1		16		16		16

-17 $\frac{3}{16}$ = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.