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Book 5: N15 Multiplying by 10 and 100
This document discusses multiplying and dividing by 10 and 100. It explains that when multiplying by 10, a 0 is added to the end of the number, and when multiplying by 100, two 0s are added. For division, it states that when dividing by 10 the last 0 is removed, and when dividing by 100 the last two 0s are removed. Examples are provided to demonstrate these rules.
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Book 5: N15 Multiplying by 10 and 100
- 1. Multiplying & dividingby 10 and 100 When we multiply by 10 we always add a 0 to the number and when we multiply by 100 we add two zeros 25 x 10 = 250 25 x 100 = 2500
- 2. When we divideby 10 we always remove the last zero of the number and when we divide by hundred we remove the last two zeros 370 ÷ 10 = 77 4,500 ÷ 10 = 450 34,500 ÷ 100 = 345 237,000 ÷ 100 = 2,370