Order of Operations

LCM and HCF

100

What is the HCF of 15 and 25?

5

200

What is the LCM of 6 and 9?

18

300

What is the LCM of 12 and 18?

36

400

What is the HCF of 6, 15 and 42?

3

500

What is the LCM of 3, 4 and 7?

84

Powers of 10

100

1.2 x 10 =

12

200

4 x 10² =

4 x 100 

= 400

300

7.8 x 10³

7.8 x 1000

= 7800

400

0.0273 x 10³

27.3

500

0.007483 x 10^-1

0.0007483

Squares and Cubes

100

9²

81

200

9² + 3² =

90

300

17² =

289

400

6³

216

500

10² - 8² - 6² =

0

Order Of Operations

100

Solve. 10 - 5 + 2

7

200

Solve. 5 x 3 - 4

11

300

Solve 9² − (12 − 2) 

71

400

Solve.(3 + 1 × 9)² − 4²

128

500

Solve. (3³ − 10 + 2)² × 2 

722

Negative Numbers

100

(10) + (-3) =

7

200

(5) - (-6) =

11

300

(-7) x (8) =

-56

400

(-12) x (-10)

120

500

(-3)³

-27