Arithmetic - examples

  1. Cost reduction
    mp3_1 Two MP3 players whose price was equal to originally have been discounted the first by 20%, the second by 35%. After the price reduction was the difference in their prices 750, - CZK. What was the original price of each of the two players?
  2. Dividing
    plot2_2 Divide the three line segment 13 cm, 26 cm and 19.5 cm long for parts so that the individual parts were equally long and longest. How long will the individual parts and how many it will?
  3. Pounds
    jablka_8 3 pounds subtract 1/3 of a pound.
  4. Z7-I-4 stars 4949
    hviezdicky_mo Write instead of stars digits so the next write of product of the two numbers to be valid: ∗ ∗ ∗ · ∗ ∗ ∗ ∗ ∗ ∗ ∗ 4 9 4 9 ∗ ∗ ∗ ∗ ∗ ∗ 4 ∗ ∗
  5. Scale factor
    cuboid_7 A prism with a volume of 1458 mm3 is scaled down to a volume of 16mm3. What is the scale factor in fraction form?
  6. Divisibility
    divisibility Is the number 214743 divisible by 10?
  7. Chocolate
    cokolada Charlie bought 7 same chocolates for 14 Eur. How many euros he pay for 27 chocolates?
  8. One half
    one_half One half of ? is: ?
  9. Family
    bigfamily The parents had 2 daughters. Each of them had one brother. How many members family had?
  10. Brick
    brick One brick is 2 kg and half a brick heavy. What is the weight of one brick?
  11. Orchard
    orchard 5 trees in 3 lines grows in the orchard. How many trees are in the orchard?
  12. Cyclist
    cyclist_2 A cyclist passes 88 km in 4 hours. How many kilometers he pass in 8 hours?
  13. Balls
    balls I have 12 balls and my friend has 18. About how many has my friend more balls?
  14. Compare
    fraction Compare fractions ?. Which fraction of the lower?
  15. Is right?
    rtriangle Is triangle with sides 24, 51 and 45 right triangle?
  16. Compare
    compare Compare with characters >, <, =: 63.79 ? 63.79
  17. Holidays
    holidays Calculate how many hours take holidays, if take 1 weeks.
  18. 7 heroes
    7statocnych 5 heroes galloping on 5 horses behind. How many ways can sort them behind?
  19. Root
    root_quadrat The root of the equation ? is: ?
  20. Reverse Pythagorean theorem
    pytagors Given are lengths of the sides of the triangles. Decide which one is rectangular: Δ ABC: 73 m, 66 m, 51 m ? Δ DEF: 63 cm, 105 cm, 84 cm ? Δ GHI: 50 dm, 48 dm, 14 dm ? Δ JKL: 31 m, 45 m, 40 m ? Δ MNO: 28 m, 53 m, 45 m ?

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