Importance of Brackets

Q. 1800 $÷$ 10{(12 - 6) + (24 - 12)} =

1. 1200
2. 10
3. 3240

Q. Which of the following shows the maximum rise in the temperature?

1. C to C
2. C to C
3. C to C
4. C to C

Q.

What is the value of $2^{-2}$?

1. 4

2. -4

3. 0.25

4. -0.25

Q. A number is increased by 26 and the new number obtained is divided by 3. If the resulting number is 18, find the original number.

1. 22
2. 28
3. 21
4. 26

Q. Question 83 (x)

Multiply the following:
6mn, 0mn

Q.

Pavan lives on the 16^th floor of a building. He came down 9 floors and collected his Maths textbook from his friend Karan. Later, he went up along with Karan to Goutham's house which is 12 floors above Karan's for group work. If Goutham lives on the topmost floor of the building, how many floors does the building have?

1. 37

2. 19

3. 13

4. 13

Q.

Question 13

$10-x$ means

(a) 10 is subtracted $x$ times.

(b) $x$ is subtracted 10 times.

(c) $x$ is subtracted from 10.

(d) 10 is subtracted from $x$.

Q. (a) If A:B=3:4andB:C=7:6 find out A:B:C
(b) If A:B=2:5 andB:C=7:9 find out A:B:C
(c) If A:B=19:21 and B:C=21:7 find outA:B:C

Q.

Simplify :$200\left[30-\left\{15-\left(3\mathrm{of}4\right)\right\}\right]$

Q.

Compare the following numbers:

(ii) $4\times {10}^{14};3\times {10}^{17}$

Q.

Simplify 29 - [28 - {8 + 36 ÷ (10 - $\overline{4-3}$ )}]

1. 13

2. 5

3. 8

4. 4

Q.

Simplify 40 - [30 - {4 + 32 ÷ (10 - $\overline{4-2}$ )}]

1. 15

2. 18

3. 14

4. 13

Q.

Simplify 40 + [100 - {8 + 36 ÷ (10 - $\overline{4-3}$ )}]

1. 45

2. 67

3. 128

4. 145

Q.

15 - (6 + 6 × 6) ÷ (9 + 5) = ?

1. 24

2. 18

3. 28

4. 12

Q.

133 + 28 ÷ 7 - 8 x 2 = ?

1. 30

2. 121

3. 47

4. 7

Q. Simplify the following expressions:

(14) [18 + 5(7 – 3)] + 64 ÷ [20 – (8 × 2)]

Q.

Simplify: 38 - [19 - {14 - (7 - 4)}]

1. 45

2. 11

3. 22

4. 30

Q.

Find the sum by suitable arrangement

547+204+686

Q. If a negative integer is multiplied with positive integer What is the answer?

Q.

Find the value of:
-24 + 36 + 45 = ______

1. 78

2. 12

3. 42

4. 57

Q.

Find the value of:
-24 + 36 = ______
36 + (-24) = ______

1. -12, 12

2. 12, 12

3. 12, -12

4. -12, -12

Q. The remainder when 36 is divided by 5 is .

1. 2
2. 1
3. 3
4. 4

Q.

15 + (8 + 6 × 6) ÷ (9 + 2) = ?

1. 23

2. 22

3. 54

4. 19

Q. What is the value of $(15\times 2+6)+10$ ?

Q. Write the given expression as a statement
( 21 ÷ 7 ) - 2

1. 21 divided by sum of 7 and 2.
2. Subtract 7 from 21 then divide whole by 2.
3. 21 minus 7 whole divided by 2.
4. 2 less than the quotient of 21 and 7.

Q. $106\times 106-94\times 94=$?

1. $2400$
2. $2000$
3. $1904$
4. $1906$
5. None of these

Q. Simply ---
12 (6 - 2)

Q. 15 - (6 + 6 × 6) ÷ (9 + 5) = ?

1. 18
2. 28
3. 12
4. 24

Q.

What is the value of:-

(655+7664)-87+(-65)?

Q. Simplified value of
$2\frac{1}{2}+3\frac{5}{7}\times \frac{3}{13}-\frac{1}{2}÷4$ is

1. $-\frac{181}{56}$
2. $\frac{188}{56}$
3. $-3\frac{13}{56}$
4. $3\frac{13}{56}$