NUMBERS AND OPERATIONS
NUMBERS IN EVERYDAY LIFE
GEOMETRY
NUMBER THEORY
Math brainteasers
100

What do we call the numbers that we add.

e.g In 9+5 what are 9 and 5?

 Sum 

or 

Total

100

How many metres are there in 5,7 kilometres?

five thousand seven hundred.

100

What do you call "pięciokąt" in English?

Pentagon.

100
List all divisors of 24?

1, 2, 3, 4, 6, 8, 12, 24.

100

Use the numbers 2, 3, 4, 5 and symbols + and = to make a true math equation.

2+5=3+4

200

What is the result of multiplication called?

Product.


200

One thousand two hundred miligrams is ............ grams?

1.2 grams.

200

Name three types of triangles based on their angles.

Acute angled/ Right angled/ Obtuse angled

200

Is 1 a prime number?

No.

200

Mr. Lee has got four daughters. Each of his daughters has got one brother. How many children has Mr. Lee got?

5.

(all daughters have got the same brother)

300

Write in words and read the number 89,321004?

Eighty-nine million, three hundred twenty-one thousand and four

300

What are the months of the second quarter of the year?

April, May, June.

300

What is the sum of all angles in a quadrilateral?

360o

300

Find Least Common Multiple (6; 4)

12.

300

I am an odd number. If you substract 10 from me, you get 15. What number am I?

25.

25-10=15

400

What is the hundreds digit in 12 345 678

6. 

400

How many days are there in the third quarter of the year?

92.

July- 31

August-31

September- 30

400

Name the angle that is 135o

Obtuse angle.

400

Find Greatest Common Divisor (18; 24)

6.

400

There are ducks and cows on a farm. There are 18  legs and 7 heads in total. How many ducks are there?

5

5 ducks x 2 legs=10

2 cows x 4 legs= 8

10+8= 18

500

Which operation do you start with?

 23 - 12 : (2 x 3)=

2x3

500

Round 2493 to the nearest hundreds.

2500.

500

What is the diameter of the circle when its radius is 2 cm?

4cm.

500

Is 2875 divisible?

Yes.

It's divisors are: 1, 5, 25, 115, 575, 2875.

500

The six seven challenge:

6   7    6    7= 1

6   7    6    7= 12

6   7    6    7= 42

6+7: 6+7=1 

6+7+6-7=12

6x7+6-7=42

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