math

m.c.d. y m.c.m.

100

m.c.d 12 y 15 

3

200

m.c.d. 12 y 18 

6

300

m.c.d. 24,84 y 132

12

400

m.c.m 30 y 24 

120

500

m.c.m. 180 y 24 

160

guess

100

calculate and tell if it is true or false 6³:6³= 0 

False

200

There is a 100 m2 farm and they want to fence it. How long is each side?

Each side measures 10 m2

300

Say 3 prime numbers. From 0 to 100

If you have said three of the numbers that are here, your answer is fine. 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61 ,,, 67,71,73,79,83,89 and 97

400

10x10x10x10x10x10x7

7.000.000

500

There are 145 people on a bus. The bus stops, 12 people get off and 25 get on. It stops again and 5 people get off. After 200 meters it makes another stop where 30 people get off and 15. At the end of the journey .....

How many stops has the bus made?
The bus has made 3 stops

multiplication

100

8x8

64

200

100x100

10.000

300

561x3

1.683

400

238x8

1.904

500

95x72

6.840

square root

100

√36

6

200

√81

9

300

√196

14

400

√441

21

500

√289

17

combined

100

(20x3)+5²

85

200

(32x3+4)-2

98

300

64+(8+4-2)x2

84

400

42-(3+(32:4):2)+2

37

500

5-(7-2-3+12)+48

39