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powers of 10
calculations with negatives
calculating with decimals
HCF and LCM
how well do you know your teacher
100

1.2 x 10 =

12

100

(10) + (-3) =

7

100

3.4 + 5.6 =

9

100

find the HCF of 30 and 45

15

100

how old am I?

32

200

4 x 102 =

4 x 100 

= 400

200

(5) - (-6) =

11

200

11 - 2.4 =

8.6

200

find the LCM of 21 and 69

3

200

what's my favourite number

42

300

7.8 x 103

7.8 x 1000

= 7800

300

(-7) x (8) = 

-56

300

7 X 0.3 

2.1

300

write 60 as a product of primes

2 x 2 x 3 x 5


22 x 3 x 5

300

what's my favourite animal

giraffe

400

105 =

10 x 10 x 10 x 10 x 10

100,000

400

(-12) x (-10)

120

400

0.13 x 0.02

0.0026

400

Find HCF and LCM of 60 and 72

HCF : 12

LCM: 360

400

How do you spell my first name

Magali

500

10-2 =

0.01

500

(-3)3

-27

500

0.75 / 0.25

3

500

Find HCF and LCM of 12, 15 and 28

HCF: 1

LCM: 420

500

What is my star sign

Capricorn