Mathematical Operations - Base Level
Practice and master this topic with our carefully crafted questions.
If '+' stands for division; 'x' stands for addition, '-' stands for multiplication, '÷' stands for subtraction, which of the following equation is correct?
On changing the signs, in option (D), we get
36 x 6 ÷ 3 + 5 - 3 = 74
36 x 2 + 5 - 3 = 74
72 + 5 - 3 = 74 77 - 3 = 74
74 = 74
If +, -, x, ÷, =, > and < are represented as δ, ●, γ, η, ω, β and α respectively, then which of the following is correct?
From option (D) 3 δ 6 ● 2 γ 8 η 4 ω 5
3 + 6 - 2 x 8 ÷ 4 = 5
9 - 2 x 2 = 5
5 = 5
Select the correct combination of mathematical signs to replace '★' signs and to balance the following equation.
6 ★ 4 ★ 12 ★ 12
6 ★ 4 ★ 12 ★ 12
From option (D), 6 x 4 - 12 = 12 12 = 12
Which of the following sets of operations with the usual notations replacing the stars in the order given makes the statements valid?
√ 100 ★ √ 16 ★ √ 225 ★ √ 1
From option (B), √ 100 + √ 16 = √ 225 - √ 1
10 + 4 = 15 -1
14 = 14
Select the correct combination of mathematical signs to replace '★' signs and to balance the given equation.
24 ★ 34 ★ 2 ★ 5 ★ 12
From option (C), we have
24 = 34 ÷ 2 - 5 + 12
24 = 17 -5 + 12
24 = 29 - 5
24 = 24
Select the correct combination of mathematical signs to replace '★' signs and to balance the following equation.
(8 ★ 7 ★ 6) ★ 5 ★ 10
Given equation is (8 ★ 7 ★ 6) ★ 5 ★ 10
Now, replacing ★ sign with the mathematical signs in option (A),
(8 x 7 - 6) ÷ 5 = 10
(56 - 6) ÷ 5 = 10 50 ÷ 5 = 10
10 = 10
If 17 x 64 = 4716, 28 x 34 = 4823, then 76 x 84 = ?
If 9 x 3 + 8 = 24, 10 x 2 + 7 = 35 and 80 x 40 + 3 = 6, then find the value of 12 x 4 + 3 = ?
As, (9 ÷ 3) x 8 = 24
(10 ÷ 2) x 7 = 35
and (80 ÷ 40) x 3 = 6
Similarly, (12 ÷ 4) x 3 = 9
Some equation are solved on the basis of a certain system. On the same basis, find out the correct answer for the unsolved equation.
4 - 5 -1 = 514, 3 - 5 - 6 = 563, 0 - 6 - 8 = ?
If 4 ★ 2 @ 3 = 6, 18 ★ 6 @ 4 = 12, then what will be the value of 24 ★ 3 @ 7 = ?
Here, sign ★ implies division and sign @ implies multiplication
4 ÷ 2 x 3 = 6, 18 ÷ 6 x 4 = 12
Therefore, 24 ÷ 3 x 7 = 56