LCM
HCF
Prime factorisation
Negative integers
100

find the LCM of 6 and 8

24

100

HCF of 18 and 27

9

100

prime factorisation of 10

2 X 5

100

 solve −5+(−3)

-8

200

Lcm of 10 and 6

30

200

HCF 63 and 140

7

200

prime factorisation 32

25

200

 solve (−12)−(−7)  

-5

300

lcm of 32 and 24

96

300

HCF 225, 300, and 450

75

300

prime factorisation of 48

24 x 3

300

 solve (−4)×(−6)+(−3)

21

500

lcm of 21, 28, and 42

84

500

HCF of 132 and 198

66

500

prime factorisation of 156

22 x 3 x 13

500

 solve (−8)÷2−(−5)×(−2)

-14

1000

LCM of 180, 252 and 336

5040

1000

HCF 360, 576 and 1440

72

1000

prime factorisation 1442

2 x 7 x 103

1000

 solve ((−5)2÷(−25))+(−2)3−(−4)2+(10÷(−2))

-21

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