Y7 Maths (Negatives-Primes)

Add Negatives

100

91+63

154

200

-35+8

-27

300

23+-15

8

400

-15+-13

-28

500

14+-21

-7

Subtract Negatives

100

67-17

50

200

18-29

-11

300

-47-50

-97

400

-21--30

9

500

-46--12

-34

Multiples

100

Find the LCM of 3 and 10

30

200

Find the LCM of 12 and 9

36

300

Find the LCM of 24 and 18

72

400

Find the LCM of 15 and 9

45

500

Find the LCM of 6 and 20

120

Factors

100

Find the HCF of 19 and 11

1

200

Find the HCF of 12 and 60

12

300

Find the HCF of 50 and 30

10

400

Find the HCF of 30 and 135

15

500

Find the HCF of 34 and 51

17

Prime Numbers

100

Find the prime factors of 51

3, 17

200

Name 1 prime number between 120 and 130

127

300

Name every prime number between 80 and 100

83, 89, 97

400

Name every prime number between 1 and 40

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37 

500

Find the prime factors of 320

2, 2, 2, 2, 2, 2, 5