Adding and Subtracting Unlike Fractions

Imagine you're a space explorer, and you've discovered two alien vaults! The first vault contains 1/4 of the galaxy's most energizing crystal, and the second vault has 3/8 of it. If you combine your findings, what portion of the galaxy's most energizing crystal will you have?

• 2/3

• 5/8

• 7/8

• 1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Imagine you're on a space adventure and you've found a container full of rare space gems. You have 5/6 of a container, but oh no! A sneaky space pirate steals 1/3 of your loot. How much of the container do you have left?

• 2/6

• 1/6

• 3/6

• 4/6

Imagine you're navigating through a galaxy far, far away and you intercept a hologram with a puzzle that reads: Simplify the expression: 2/5 + 1/3. What's the cosmic number to proceed?

• 7/11

• 5/8

• 3/7

• 11/15

Tags

CCSS.7.NS.A.1C

Imagine you're a space explorer, and you've discovered two alien artifacts! The first artifact contains 2/7 of a star map, and the second artifact contains 5/9 of a star map. If you combine both parts, what portion of the star map do you have now?

• 59/63

• 7/11

• 3/16

• 11/14

Imagine you're a space explorer, and you've found a data cube containing 3/4 of a star map. But oh no! A nano-drone steals 1/6 of your map. How much of the map do you have left?

• 3/8

• 5/12

• 1/2

• 2/3

Imagine you're a space pirate dividing your loot. You have 3/8 of a cargo hold of rare minerals and your crewmate adds another 2/5. How much loot do you have now?

• 5/8

• 11/13

• 1/2

• 31/40

Imagine you're a space explorer, and you've discovered two ancient data modules on a deserted planet! The first module contains 4/9 of a star map, and the second module contains 2/3 of a star map. If you combine both pieces, what portion of the star map do you have now?

• 6/12

• 14/27

• 10/27

• 3/7

Imagine you're on a space mission and you've discovered a planet full of rare crystals. You have 7/8 of a cargo hold, but oh no! A sneaky space pirate steals 2/5 of it while you're not looking. How much of the cargo hold do you have left?

• 11/20

• 5/8

• 19/40

• 3/4

Tags

CCSS.7.NS.A.1C

Embark on a journey through the cosmos! Can you solve this interstellar puzzle: Calculate the fuel ratio needed for the next light-speed jump: 5/6 + 3/4

• 2/3

• 7/12

• 8/10

• 11/12

Ready for a futuristic math challenge? Imagine you're on a space station and you need to allocate resources. You start with 1/2 of the station's energy reserves and then gain an additional 3/5. How much energy do you have now?

• 5/7

• 11/10

• 7/10

• 2/3

Tags

CCSS.7.NS.A.1C