Chapter 12 Measurement - Converting measurements

Chapter 12 Measurement

(1) Converting a measurement from a larger unit to a smaller unit

Pupils will be able to:

Convert measurements of length, mass and volume from a larger unit to a smaller unit:

​(i) from centimetres to millimetres

​ cm to mm

​

​(ii) from metres to centimetres

​ m to cm

​

​(iii) from metres to millimetres

​ m to mm

​

​​(iv) from kilometres to metres

​ km to m

​

(v) from kilograms to grams

​ kg to g

​

​(vi) from litres to millilitres

l to ml

​LEARNING OBJECTIVES

Open Ended

LET US RECALL BACK, WHAT DO YOU REMEMBER ABOUT THE TOPIC,

"MEASUREMENT"?

​Let us recall back ...

​1 cm = 10 mm

​2 cm = 20 mm

​3 cm = 30 mm

​...

​7 cm = 70 mm

​8 cm = 80 mm

​9 cm = 90 mm

​10 cm = 100mm

​12 cm = 12 x 10

​ = 120 mm

​

​27 cm = 27 x 10

​ = 270 mm

​

​27.5 cm = 27.5 x 10

​ = 275 mm

​Example 1:

Multiple Choice

Convert 0.6 cm to millimetres (mm)

• 0.6 cm = 0.6 x 10

  = 6 mm

• 0.6 cm = 0.6 x 10

  = 60 mm

• 0.6 cm = 0.6 x 100

  = 60 mm

Multiple Choice

Convert 10.8 cm to millimetres (mm)

• 10.8 cm = 10.8 x 10

  = 18 mm

• 10.8 cm = 10.8 x 10

  = 108 mm

• 10.8 cm = 10.8 x 100

  = 1080 mm

​Now let us convert cm to cm and mm

Which means....

​

​1.4 cm to cm and mm

= 10 cm & 4 mm

​

​27.8 cm to cm & mm

​= 27 cm & 8 mm

​

​48.9 cm to cm & mm

​= 48 cm & 9 cm

​Express 2.7 cm in cm and mm

Multiple Choice

Now let's try this:

Express 71.5 cm in centimetre and millimetres.

• 71.5 cm

  = 715 mm

• 71.5 cm

  = 71 cm & 50 mm

• 71.5 cm

  = 71 cm & 5 mm

Multiple Choice

Express 100.1 cm in centimetres and millimetres.

• 100.1 cm 

  = 100 cm and 1 mm

• 100.1 cm

  = 1001 mm

• 100.1 cm

  = 100 cm 10 mm

Poll

That's all for today!

So what do you think of today's topic?