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Multiplying & dividing by 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
When we divide by 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

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Book 5: N15 Multiplying by 10 and 100

  • 1. Multiplying & dividing by 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 divide by 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