Angles
Mental Maths
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Percentage
Random Facts
100

How many degrees is a right angle?

90o

100

68+__=100

32

100

The turtle at the zoo weighs 145 kilos. It is five times heavier than the baby turtle. How much does the baby turtle weigh?

The baby turtle weighs  29 kilos.

100

Find 3/25 as a percentage.

12%

100

During you life time you produce enough saliva to fill how many swimming pools?

Two

200

How many degrees is an angle in an equilateral triangle?

60o

200

Convert 1 3/4 into a decimal

1.75

200

532 people are watching Black Panther in a theater. The theater has 750 seats. 12 people leave to buy popcorn. How many seats are empty in the theater?

There are 206 empty seats.

200

Find 13/20 as a percentage.

65%

200

Which animal can predict earthquakes from 75 miles away and five days before it happens?

Snakes

300

In a triangle, one angle is a right angle. The second angle is 34o. How many degrees is the third angle?

56o

300

What is 96 times 9?

864

300

Trump has $12 in nickels and quarters. If Trump has the same number of each kind of coin, how many nickels does Trump have? 


(1 nickel = 5c  quarter=25c)

Trump has 40 quarters and 40 nickels. 


Guess and check: 20 quarters ($5.00) + 20 nickels ($1.00) = $6.00 40 quarters ($10.00) + 40 nickels ($2.00) = $12.00

300

There are 30 marbles. If 12 of the marbles are green, and the rest are blue marbles, then what is the percentage of the blue marbles?

60%

300

If you constantly fart for ___years and ____ months, you will have enough gas to create the energy of an atomic bomb

6 years and 9 months

400

A line has 3 angles. 1 is 67 degrees and another one is 92 degrees. What is the missing angle?

21 degrees

400

What is 46+9-10+128?

173

400

Bucky sold some watches at $14 each and 20 bookmarks at $1.50 each. Roy McCoy sold the same numbers of watches at $13.50 each and 20 bookmarks at $1.80. They collected the same amount of money. How many watches did Bucky sell?

12 watches

400

Soy McCoy earns $420 a week after a 5% rise. What was his pay before?

$400

400

How many penguins can a polar bear eat in one sitting?

86

500

NOPL is a trapezium and NOPM is a rhombus. NL//OP, ∠LMP=132o and ML=MP. Find ∠NOP and ∠LPO. 

∠NOP=48o

∠LPO=156o

500

What is 46- 5?

97211

500

A rectangular tank is 40cm wide by 50 cm long by 30cm high is filled up with water up to 2/3 of its height. Water flows from a tap into the tank at a rate of 0.5 liters per min. What is the amount of water in the tank after 30 min?

55 litres

500

Boy McFacto has $3200 in a savings account. After a year, the bank pays him interest increasing his balance to $3360. What percentage rate was applied to the account?

5%

500

Where in the world is it illegal to own 1 guinea pig?

Switzerland

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