Equation + subtracting - math problems

Number of problems found: 31

  • Root
    root_quadrat The root of the equation ? is (equal or greater or less than zero)? ?
  • Which
    plusminus_11 Which decimals when subtracted equal 3.89: a - b = 3.89
  • Identity
    numbers_49 123456789 = 100 Use only three plus or minus characters to correct previous identity/equation.
  • Classroom
    school_1 In a classroom are 30 students, boys are four times more than girls. How many boys are in the class?
  • Mom and daughter
    mother_and_daughter Mom is 30 years older than the daughter. What is the age difference between them in 35 years?
  • Brother and sister
    time When I was 8, my sister was 4, and now I am 18. How old is my sister?
  • Mistake
    minus Nicol mistake when calculate in school. Instead of add number 20 subtract it. What is the difference between the result and the right result?
  • The rod
    meter_19 The rod has a length of 90cm. Half is painted blue, the third is red and the rest is yellow. How long is the yellow part of the rod?
  • Sparrow ball
    vrabce On the sparrows ball were males and females. There were 170 sparrows. Males was 20 more than females. How many sparrow female was at a ball?
  • Landlord
    dukaty Landlord had 49 ducats more than Jurošík. How many ducats Jurošík steal landlord if the Jurošík now 5 ducats more?
  • Trip cost
    aircraft-02 In September, the trip cost CZK 12,000. How many crowns did the trip cost in June of the same year, when they have since reduced the price by a quarter and by another CZK 1,200?
  • I think number
    hats I think number.When I add 841 to it and subtract 157, I get a number that is 22 greater than 996. What number I thinking?
  • Ten pupils
    venn 10 pupils came to the art group. 8 pupils painted with watercolors and 9 pupils painted with ink, each pupil painted with ink or watercolors. How many pupils painted water and ink at the same time?
  • Savings
    savings Eva borrowed 1/3 of her savings to her brother, 1/2 of savings spent in the store and 7 euros left. How much did she save?
  • Pupils
    school_2 Two classes to collect money. Boys are four sevenths pupils. In time did not pay a quarter of the boys and a sixth of girls, which together mean 12 sinners. How many pupils attend this two classes ?
  • Eggs
    eggs_1 Mother bought from neighbors 39 domestic eggs. Her neighbor got back €4.54 from €10. How many euros get back from 20 banknote if she buy 94 eggs from a neighbor?
  • Apples
    apples Hanka has 6 apples more than Juro and 7 apples less than Mirka. Mirka has 23 apples. How many apples has Hanka and how many Juro?
  • Unknown x
    UnknownX If we add to unknown number 21, then divide by 6 and then subtract 51, we get back an unknown number. What is this unknown number?
  • Textbooks
    textbooks After the check of textbooks found that every 10-th textbook should be withdrawn. Together 58 textbooks were withdrawn. How many textbooks were in stock before withdrawn, and how many after withdrawn?
  • Plums
    plumbs In the bag was to total 136 plums. Igor took 3 plums and Mary took 4/7 from the rest. How many plums remained in the bag?

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