Convert the units of both sides to the same, then remove the units and simplify (if possible by dividing both sides by a common divisor greater than 1).
eg The Landranger series map scale of 2 cm equals 1 km:
1 m = 100 cm
1 km = 1,000 m
→ 1 km = 1,000 x 100 cm
= 100,000 cm
2 cm : 1 km
→ 2 cm : 1 x 100,000 cm
→ 2 cm : 100,000 cm
→ 2 : 100,000
→ 1 : 50,000
scale factor
scale drawing An example might be 4:1 This is a ratio in its simplest form (it cannot be further simplified mathematically) and it's expressed with no units (not in inches or milimeters etc).
14:45 written as a fraction in simplest form is 1/3
Express the ratio below in its simplest form. 12 : 6
what is 27:72 as a ratio in simplest form
scale factor
scale factor
scale factor
scale factor
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scale drawing
scale factor
scale factor
scale factor
scale drawing An example might be 4:1 This is a ratio in its simplest form (it cannot be further simplified mathematically) and it's expressed with no units (not in inches or milimeters etc).
scale factor
scale factor