The twelve inch ruler
A twelve inch ruler is approximately 30 cm long. Use this fact to estimate each of the following:
The number of centimetres in 4 inches.
The number of inches in 5 centimetres.
The number of centimetres in 9 feet 10 inches.
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1) The number of centimetres in 4 inches is 30/3 = 10
ReplyDelete2) The number of inches in 5 centimetres is 12/6 = 2
3) The number of centimetres in 9 feet and 10 inches is 295