Class revision

If 145 + A = 250 ?

• 405

• 105

• 205

• 306

How many milliter are there in 5 liter

• 5000ml

• 500ml

• 50ml

• 50000ml

What is 5² + 7² + 8²

• 138

• 149

• 159

• 172

Express 54 : 45 in it's simplest form

• 9:5

• 1:5

• 6:5

Change 0.45 to percentage

• 45%

• 50%

• 60%

• 25%

Change 90% to decimal

• 0.9

• 0.09

• 0.009

• 9.0

If 189 - B = 164. Find B

• 24

• 25

• 27

• 278

Simplify 14² + 17² -5²

• 350

• 460

• 440

• 320

• 12

• 15

• 18

• 21