Year 6 Maths Knowledge Organiser

To find 1% of a number you...

• divide by 1

• divide by 100

• divide by 10

• half it

To find 10% of a number you...

• x by 10

• 0.25, 0.5, 0.75, 1, 1.25

• 0.4, 0.8, 1.2, 1.6

• 0.2, 0.4, 0.6, 0.8

• 0.5

• 20%

• 0.2

• 0.05

In Roman numerals, C represents which number?

• 100

• 1

• 5

• 10

In Roman numerals, 10 is represented by which letter?

• L

• M

• X

• V

What is the number IV?

• 5

• 6

• 11

• 4

What number is shown by, CXXII

• 122

• 111

• 1022

• 112

A full turn is...

• acute

• straight line

• obtuse

• right angle