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 / )

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

RHS =

Answer:_______________

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

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

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 / )

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

RHS =

Answer:_______________

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

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

RHS =

Answer:_______________

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

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

RHS =

Answer:_______________

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

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

RHS =

Answer:_______________

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

8 - $\frac{3}{17}$

RHS =

Answer:_______________

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

6 - $\frac{4}{16}$

RHS =

Answer:_______________

10)

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

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

RHS =

Answer:_______________

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

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

RHS = Answer: $\frac{-148}{19}$

SOLUTION 1 :

To verify,

8 - $\frac{4}{19}$ = $\frac{4}{19}$ - 8

LHS = $\frac{8}{1}$ - $\frac{4}{19}$ = ( LCM of 1 and 19 is 19)

LHS	8x19	-	4x1	=	152	-	4	=	148
	1x19		19x1		19		19		19

14 $\frac{8}{1}$ 9 = LHS

RHS = $\frac{4}{19}$ + $\frac{8}{1}$

RHS	4x1	-	8x19	=	4	-	152	=	-148
	19x1		19x1		19		19		19

-14 $\frac{8}{1}$ 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 / )

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

RHS = Answer: $\frac{-91}{19}$

SOLUTION 1 :

To verify,

5 - $\frac{4}{19}$ = $\frac{4}{19}$ - 5

LHS = $\frac{5}{1}$ - $\frac{4}{19}$ = ( LCM of 1 and 19 is 19)

LHS	5x19	-	4x1	=	95	-	4	=	91
	1x19		19x1		19		19		19

$\frac{91}{19}$ = LHS

RHS = $\frac{4}{19}$ + $\frac{5}{1}$

RHS	4x1	-	5x19	=	4	-	95	=	-91
	19x1		19x1		19		19		19

- $\frac{91}{19}$ = 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 - $\frac{4}{17}$

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 / )

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

RHS = Answer: $\frac{-55}{7}$

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	=	110
	1x14		14x1		14		14		14

$\frac{55}{7}$ = LHS

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

RHS	2x1	-	8x14	=	2	-	112	=	-110
	14x1		14x1		14		14		14

- $\frac{55}{7}$ = 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 / )

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

RHS = Answer: $\frac{-139}{13}$

SOLUTION 1 :

To verify,

11 - $\frac{4}{13}$ = $\frac{4}{13}$ - 11

LHS = $\frac{11}{1}$ - $\frac{4}{13}$ = ( LCM of 1 and 13 is 13)

LHS	11x13	-	4x1	=	143	-	4	=	139
	1x13		13x1		13		13		13

$\frac{139}{13}$ = LHS

RHS = $\frac{4}{13}$ + $\frac{11}{1}$

RHS	4x1	-	11x13	=	4	-	143	=	-139
	13x1		13x1		13		13		13

- $\frac{139}{13}$ = 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 - $\frac{2}{18}$

RHS = Answer: $\frac{-62}{9}$

SOLUTION 1 :

To verify,

7 - $\frac{2}{18}$ = $\frac{2}{18}$ - 7

LHS = $\frac{7}{1}$ - $\frac{2}{18}$ = ( LCM of 1 and 18 is 18)

LHS	7x18	-	2x1	=	126	-	2	=	124
	1x18		18x1		18		18		18

$\frac{62}{9}$ = LHS

RHS = $\frac{2}{18}$ + $\frac{7}{1}$

RHS	2x1	-	7x18	=	2	-	126	=	-124
	18x1		18x1		18		18		18

- $\frac{62}{9}$ = 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 / )

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

RHS = Answer: $\frac{-34}{7}$

SOLUTION 1 :

To verify,

5 - $\frac{2}{14}$ = $\frac{2}{14}$ - 5

LHS = $\frac{5}{1}$ - $\frac{2}{14}$ = ( LCM of 1 and 14 is 14)

LHS	5x14	-	2x1	=	70	-	2	=	68
	1x14		14x1		14		14		14

$\frac{34}{7}$ = LHS

RHS = $\frac{2}{14}$ + $\frac{5}{1}$

RHS	2x1	-	5x14	=	2	-	70	=	-68
	14x1		14x1		14		14		14

- $\frac{34}{7}$ = 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 / )

8 - $\frac{3}{17}$

RHS = Answer: -13 $\frac{3}{17}$

SOLUTION 1 :

To verify,

8 - $\frac{3}{17}$ = $\frac{3}{17}$ - 8

LHS = $\frac{8}{1}$ - $\frac{3}{17}$ = ( LCM of 1 and 17 is 17)

LHS	8x17	-	3x1	=	136	-	3	=	133
	1x17		17x1		17		17		17

13 $\frac{3}{17}$ = LHS

RHS = $\frac{3}{17}$ + $\frac{8}{1}$

RHS	3x1	-	8x17	=	3	-	136	=	-133
	17x1		17x1		17		17		17

-13 $\frac{3}{17}$ = 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 / )

6 - $\frac{4}{16}$

RHS = Answer: $\frac{-23}{4}$

SOLUTION 1 :

To verify,

6 - $\frac{4}{16}$ = $\frac{4}{16}$ - 6

LHS = $\frac{6}{1}$ - $\frac{4}{16}$ = ( LCM of 1 and 16 is 16)

LHS	6x16	-	4x1	=	96	-	4	=	92
	1x16		16x1		16		16		16

$\frac{23}{4}$ = LHS

RHS = $\frac{4}{16}$ + $\frac{6}{1}$

RHS	4x1	-	6x16	=	4	-	96	=	-92
	16x1		16x1		16		16		16

- $\frac{23}{4}$ = 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 / )

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

RHS = Answer: $\frac{-95}{8}$

SOLUTION 1 :

To verify,

12 - $\frac{2}{16}$ = $\frac{2}{16}$ - 12

LHS = $\frac{12}{1}$ - $\frac{2}{16}$ = ( LCM of 1 and 16 is 16)

LHS	12x16	-	2x1	=	192	-	2	=	190
	1x16		16x1		16		16		16

$\frac{95}{8}$ = LHS

RHS = $\frac{2}{16}$ + $\frac{12}{1}$

RHS	2x1	-	12x16	=	2	-	192	=	-190
	16x1		16x1		16		16		16

- $\frac{95}{8}$ = RHS

LHS ≠ RHS

Hense, Commutative property is not true for Subtraction.