Subtracting + rational numbers - math problems

Number of problems found: 19

  • Expression 8
    expr_1 Evaluate this expressions: a) 5[3 + 4(2.8 - 3)] b) 5×(8-4)÷4-2
  • About what
    flower_function How much and how many times is 72.1 greater than 0.00721?
  • Morning
    clocks2_21 Jana rose in the morning in the quarter to seven. She slept nine and a half hours. When did she go to sleep?
  • Mixed numbers
    zlomky_10 Rewrite mixed numbers, so the fractions have the same denominator: 5 1/5 - 2 2/3
  • Regrouping
    mixed_7 Subtract mixed number with regrouping: 11 17/20- 6 19/20
  • The temperature
    teplomer_26 The temperature at 1:00 was 10 F. Between 1:00 and 2:00, the temperature dropped 15F. Between 2:00 and 3:00, the temperature rose 3F. What is the temperature at 3:00?
  • Wire
    wire_1 From wire 53 meters long they cut of 12.1 m and then 13.1 m. How many meters of wire left?
  • Suriani
    meter Suriani had 3.05 m of ribbon. She used up 0.76 m of it. What is the length of ribbon that she has left?
  • Purchase 3
    kosiky Bailey had $5.67. She bought a bottle of water for $3.71. There was no sales tax on her purchase. How much money did she have after her purchases?
  • Package
    latky The package was 23 meters of textile. The first day sold 12.3 meters. How many meters of textile remained in the package?
  • Jansen
    flasa_1 Jansen had 1.3 litres of fruit juice. He drank 0.5 litres during lunch. How many litres of fruit juice does he have left?
  • The tallest
    city The tallest building in the world used to be Taipei 101 in Taiwan. Its height is 0.509 km. The tallest building in North America used to be Sears Towers in Chicago, USA. Its height is 0.442 km. What is the difference in the heights of the buildings?
  • Submerging
    submarine Monika dove 9 meters below the ocean's surface. She then dove 13 meters deeper. Then she rose 19 and one-fourth meters. What was her position concerning the water's surface (the water surface = 0, minus values = above water level, plus = above water level
  • Five pumps
    diesel2 Three same pumps fill the tank with 50400 liters of diesel in 7 hours. How many liters of diesel will it take in 4 hours if we add two more of the same pumps and pump them the same way? How much more (or less) will they get if we add 2 of the same pumps a
  • Colored blocks
    vaha2_1 Tucker and his classmates placed colored blocks on a scale during a science lab. The brown block weighed 8.94 pounds, and the red block weighed 1.87 pounds. How much more did the brown block weigh than the red block?
  • Simplify 3
    fractal_14 Simplify mixed numerals expression: 8 1/4- 3 2/5 - (2 1/3 - 1/4) Show your solution.
  • Cast brass
    piston Brass cast weight was 3.84 kg, it had turned into piston weight 3.491 kg. How many grams of brass was turned off?
  • Latitude and longitude
    latitude-and-longitude A helicopter is flying from Hong Kong to Jakarta. The latitude of Jakarta is -6.20, and its longitude is 106.80. The latitude of Hong Kong is 22.27, and its longitude is 114.15. What is the helicopters net change in latitude and longitude as it travels fr
  • The Stolen Money
    magic2_1 A man walks into a store and steals a $100 bill. 5 minutes later, he returns to the store and buys stuff worth $70. He pays with the bill that he had stolen, so the owner of the store returns him $30. How many dollars did the store owner lose?

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Subtracting Problems. Rational numbers - math problems.