Integers - 5th grade (10y) - examples

  1. Divisibility
    divisibility Is the number 761082 exactly divisible by 9? (the result is the integer and/or remainder is zero)
  2. Monkey
    monkey Monkey fell in 38 m deep well. Every day her scramble 3 meters, at night dropped back by 2 m. On that day it gets hangover from the well?
  3. Cats
    cats Two cats caught two mice in two days. How many mouses will catch 6 cats for 6 days?
  4. Trio
    3Soldiers 56 children lined up in groups of three. How many children did not create a trio?
  5. 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?
  6. Father and son
    father_son Father and son are together 80 years. Son is 28 years younger than father. How old is the son?
  7. Class
    pytagoras_class When Pythagoras asked how many students attend the school, said: "Half of the students studying mathematics, 1/4 music, seventh silent and there are three girls at school." How many students had Pythagoras at school?
  8. Opposite numbers
    plus_minus Calculate opposite numbers (additive inverse) to given ones:
  9. Rounding 2
    nice_circles Round the following negative number: -143.021
  10. Remainders
    dividing It is given a set of numbers { 170; 244; 299; 333; 351; 391; 423; 644 }. Divide this numbers by number 66 and determine set of remainders. As result write sum of this remainders.
  11. Thermometer
    snehuliak The thermometer showed -13°C at morning. Then temperature was increased by 5°C again increased by 1°C and then decreased by 3°C and then decreased by 3°C. Which terminal temperature thermometer shows?
  12. Integers
    calculator_mechanical May be the sum of two integers less than their difference?
  13. Numbers
    number_line Find number on thenumber line that has same distance from this numbers:
  14. With bracket
    expr Calculate (evaluate) simple mathematical expression with a negative numbers and a bracket: 13+15*5-2*(-6)
  15. Value
    primefactor2 Determine the value of the following exspressions: a) (23-25)·(4-5) b) (97-123):(18+8)
  16. Freezer
    teplomer Temperature is -8 degrees Celsius in the freezer. Outside temperature is 2 degrees Celsius. One minute took to change temperature by one degree Celsius if we open door. How many minutes the temperature in the freezer will rise?
  17. Clotheslines
    snura Mommy needs 6 clothesline 360 cm long. Clotheslines is sold in the length of eight meters. How many of these clotheslines must buy mom if any does not want to be connected? How much mommy pay for the clotheslines when 1 piece costs 24kč?
  18. Thermometer
    teplomer_2 thermometer showed -12 degrees Celsius at the morning then the temperature rises by 4 degrees and later again increased by 2 degrees at the evening has fallen by 5 degrees and then fall 3 degrees. What end temperature does the thermometer show?
  19. Expression 6
    numbers2_48 Evaluate expression: -6-2(4-8)-9
  20. Balance of account
    usd_6 Theo had a balance of -$4 in his savings account. After making a deposit, he has $25 in his account. What is the overall change to his account?

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