Unit-2 The World of Numbers

This unit puts light on the invention of numbers, origin of these numbers and how old are they.

Suppose the temperature of a cooling substance is 10 ◦C at a particular time and suppose there is a drop in temperature by 5 ◦C in every 10 minutes. By how much will the temperature have dropped after 40 minutes? Use a number line to find this.

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Learning Pundits Content Team

Written on Apr 17, 2019 7:12:47 PM