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Mathematics 2 ESO – Unit 2 RATIONAL NUMBERS extra activities

1 –  Watch the video on “Dividing Fractions” and complete the sentence / solve:

  • a)  Dividing fractions is the same as ______________________________________.
  • b)  To find the reciprocal of a fraction, we flip the _____________ by the _____________.
  • c)  Solve:
    • I)  3/5 / 1/2
    • II)  3/5 / -4/3
    • III)  -3/5 / 5/2

2 –  Watch the video on “How to do Long Multiplication with Decimals” and answer:

  • a)  Why don’t we have to “line up” the decimals?
  • b)  What is the “place holder”?
  • c)  Solve by “long multiplication”:
    • I)  3.12 · 1.2
    • II) 25.1 · 5
    • III) 12.832 · 0.1