Math Challenge: Annual Exam Revision Test

Find the breadth of this rectangular box.

Perimeter = 48 cm, length = 18 cm

• 16 cm

• 6 cm

• 36 cm

• 26 cm

Answer explanation

Formula: Breadth = (Perimeter ÷ 2) – length = (48 cm ÷ 2) – 18 cm

= 24 cm – 18 cm = 6 cm

Find the cost of carpeting a room 13m by 9m at the rate of ₹ 200 / sq.m

• ₹ 23400

• ₹ 23405

• ₹ 235000

• ₹ 2340.00

Answer explanation

Area for carpeting = 13 m x 9 m = 117 sq.m

Cost of carpeting = 117 sq.m x ₹ 200 = ₹ 23400

117 x 2= 234

The length of a side of a square field is 20 m. If the cost of fencing of a square field is ₹ 200/m. What is the total cost of fencing?

• ₹ 15000

• ₹ 160000

• ₹ 1600

• ₹ 16000

Answer explanation

The length of a side of the square field is 20 m. If the cost of fencing of a square field is ₹ 200/m. What is the total cost of fencing?

perimeter of the field= 4 x side = 4 x 20 m = 80 m

The cost of fencing is = ₹ 200 x 80 m = ₹ 16000

8 x 2 = 16

The place values of 9 in 10.679 is __________

• 9 thousandths

• 9 thousands

• 9 hundreds

• 9 hundredths

A day has _________ seconds.

• 12x60x60

• 60x60

• 24x60

• 24x60x60

Answer explanation

A day has 24 hours.

An hour has 60 mins.

A min has 60 secs.

A _____ is a simple closed figure that is made up of four line segments.

• Pentagon

• Triangle

• Quadrilateral

• Polygon

The radius of a circle is 2.5 cm, then the diameter will be ____

• 5 cm

• 15 cm

• 7 cm

• 50 cm

10years 5 months + 11years 7months

• 21 years 12 months

• 22 years 2 months

• 22 years

• 23 years 3 month

9h 20 min - 3h 40 min

Hint: if you carry over 1 hour, it becomes 60 min on the other side.

• 6 h 20 min

• 5 h 40 min

• 6 hours

• 6 h 60 min

125 ml = ________ litres

• 12.5

• 1.25

• 0.125

• 125000

Answer explanation

SBD rule

Divide by 1000