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Ratios, proportions, cross multiply

Quiz by Julie Licavoli

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13 questions
Show answers
  • Q1
    A teacher had 21 red pens. If the ratio of red pens to blue pens she owned was 3:1, how many pens did she have in total?
    7
    1:3
    28
    4
    30s
  • Q2
    A recipe called for the ratio of sugar to flour to be 5:1. If you used 35 ounces of sugar, how many ounces of flour would you need to use?
    6
    7
    5
    14
    120s
  • Q3
    A chess player played 20 games total. If he won 2 of the games, what is the ratio of games he lost to games he won?
    9:1
    10
    1:9
    10:2
    30s
  • Q4
    At a pet store the ratio of cats to dogs sold was 10:1. If there were 60 cats that were sold, how many dogs were sold?
    1:10
    11
    71
    6
    30s
  • Q5
    A buffet offers ranch or caesar dressing. The ratio of ranch dressing used to caesar dressing used is 8:3. If the buffet uses 72 cases of ranch dressing, how many cases of caesar do they use?
    75
    27
    3:8
    80
    30s
  • Q6
    At a farm the ratio of cows to horses was 10:3. If there were 20 cows at the farm, how many horses were there?
    33
    6
    7
    13
    30s
  • Q7
    Are these ratios proportional? (equivalent fractions)
    Question Image
    Yes, Proportion. Multiply 12/7 by 3 to equal 36/21
    Yes, Proportional. Multiply 12/7 by 4 to equal 36/21
    Not equivalent fractions (cannot reduce fractions to be the same ratio)
    30s
  • Q8
    Are these ratios proportional? (equivalent fractions)
    Question Image
    Yes
    No
    30s
  • Q9
    Are these ratios proportional? (equivalent fractions)
    Question Image
    Yes, Proportion. Multiply 4/10 by 2 to equal 8/20
    Yes, Proportional. Multiply 4/10 by 4 to equal 8/20
    Not equivalent fractions (cannot reduce fractions to be the same ratio)
    30s
  • Q10
    These fractions are equivalent. What should go under the 1 in the fraction across from 9/18
    Question Image
    2
    9
    3
    6
    30s
  • Q11
    These fractions/proportions are equivalent. What should go above 54 in the fraction across from 4/9?
    Question Image
    24
    3
    9
    6
    30s
  • Q12
    Solve the proportion (x)
    Question Image
    18
    14
    21
    42
    30s
  • Q13
    Solve the proportion (n)
    Question Image
    16/3
    8/3
    24
    6
    30s

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