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Addition and subtraction of fractions

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    Addition and subtraction of fractions
  •   Study   Slideshow
  • Find the least common denominator.
    56
  •  5
  • Find the least common denominator.
    75
  •  5
  • Find the least common denominator.
    80
  •  5
  • Calculate.
    65/84
  •  10
  • Calculate.
    19/45
  •  10
  • Calculate.
    23/60
  •  10
  • Calculate.
    29/32
  •  10
  • Maxim ate 4/9 of the pizza, while Ayana ate 1/6 of the pizza. How many parts of the pizza are left?
    7/18
  •  15
  • A group of researchers went on an expedition to Saturn. They collected 3/5 of soil samples and then an additional 2/15. How many samples, in total, did they collect?
    11/15
  •  15
  • On the planet Mars, there were 9/10 crystals. Then, 1/5 of the crystals were used for the construction of a base. How many crystals are left on the planet?
    7/10
  •  15
  • An alien researcher collected 4/6 samples of gas on the space station. How many more samples does he need to collect to complete the research?
    1/3
  •  15
  • The spacecraft delivered 6/10 of the required resources to Mercury. How many more resources does it need to deliver to complete the mission?
    2/5
  •  15
  • In the Andromeda galaxy, there were 20 planets. An alien visited 2/5 of them. How many planets did the alien visit?
    8
  •  15
  • On the planet Venus, there were 9 oceans. Then, 2/3 of the oceans dried up. How many oceans are left?
    3
  •  15
  • A space astronomer discovered 1/4 of the new stars in the galaxy. If there are a total of 200 billion stars in the galaxy, how many stars did he discover?
    50 billion stars
  •  15
  • If three aliens weigh 30 kg, then how much do five aliens of the same kind weigh?
    50 kg
  •  15