Mental maths class VIII

What number should be added to -1 so we get 5/7

• 5/7

• 12/7

• -12/7

• 8/7

what is the number which when added to 10 times of itself gives 275

• 55

• 35

• 25

• 75

In equilateral triangle find value of x

• 60ᵒ

• 130ᵒ

• 120ᵒ

• 60ᵒ

ᶠind the range of the data 12,15,51,62,8,72,46and 35

• 72

• 64

• 56

• 32

Write the value of √ 99 x √ 44

• 66

• 888

• 55

• 120

If the area of cube 49 cm² its vloume will be

• 125cm³

• 343 cm³

• 385 cm³

• 450 cm³

find x if x% of 20=40

• 400

• 300

• 100

• 200

find x if x:5::20:x

• 25

• 20

• 10

• 45

Find the area of the figure

• 15 cm²

• 12cm²

• 45cm²

• 12 cm

Find the area of the shaded portion

• 12 sq m

• 64 sq m

• 6 sq m

• 120 sq m