SSS2 Maths Quiz 5.1 – Approximations

In a class of p students, the average score is x and in another class of n students the average score is y. What is the average score for both classes?

(x + y) / 2

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(px + ny) / (p + n)

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x + y

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2xy

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A student has 200 Naira. If someone gives her 160 Naira, how much will she have? If someone gives her x Naira, how much will she have?

200 + 160

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200 – 160

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200 + x

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200 – x

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A man was 20 years old 6 years ago. How old is he now? P years ago another man was 23 years old. How old is he now?

20 + 6

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20 – 6

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P + 23

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23 – P

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In one science class of 25 students, the average test score was 78%. In a different science class of 30 students, the average was 85%. What’s the overall average for both classes?

80%

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81%

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82%

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83%

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A store sold 12 TVs on Monday with an average price of $450. On Tuesday, they sold 8 TVs with an average price of $600. What’s the average price of a TV sold across both days?

$500

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$525

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$550

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$575

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One bus route averages 35 passengers per trip. Another bus route on the same line averages 50 passengers per trip. If the first bus makes 10 trips and the second makes 8 trips, what’s the average number of passengers per trip across both routes?

40

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42

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45

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47

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A farmer harvests 800 apples from one section of his orchard with an average weight of 120 grams per apple. He harvests 1200 apples from another section with an average weight of 100 grams per apple. What’s the average weight of an apple across the entire harvest?

110 grams

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112 grams

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114 grams

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116 grams

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During week one, Team A scores an average of 22 points per game. In week two, they score an average of 30 points per game. If they played 5 games each week, what’s their average points per game over the two weeks?

25

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26

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27

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28

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A library has 800 books. A generous donor gives them 250 more books. How many books does the library have now? If the donor gives them ‘d’ books, how many will the library have?

1050

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1051

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1052

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1053

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Sam starts the day with $50 in his wallet. He earns $30 doing chores. How much money does he have now? If he earns ‘e’ dollars, how much will he have in total?

$80

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$81

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$82

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$83

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A tree is 12 feet tall. After a year, it grows another 5 feet. How tall is the tree now? If it grows ‘g’ feet, how tall will it be?

17 feet

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18 feet

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19 feet

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20 feet

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There are 15 birds on a fence. Some more birds join them. Now there are 32 birds. How many birds joined? If ‘b’ birds join, how many will there be in total?

16

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17

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18

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19

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A baker makes 25 muffins. She sells some throughout the day. Now there are 12 muffins left. How many did she sell? If she sells ‘m’ muffins, how many will she have left?

13

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14

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15

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16

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John is 8 years old. His sister is 5 years younger than him. How old was his sister one year ago?

2 years old

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3 years old

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4 years old

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5 years old

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Emily was 40 years old 10 years ago. How old is she now? If ‘t’ years ago she was 40, how old is she now?

40 years old

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45 years old

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50 years old

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55 years old

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A puppy is 1 year old. Its owner is 25 years older. How old will the puppy’s owner be in 4 years?

28 years old

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29 years old

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30 years old

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31 years old

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Tom’s grandfather is 82 years old. Tom is 50 years younger than him. How old was Tom 5 years ago?

27 years old

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28 years old

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29 years old

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30 years old

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A woman is 3 times older than her daughter. Her daughter is 12 years old. How old will the woman be in 10 years?

36 years old

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39 years old

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42 years old

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45 years old

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Problem 1: A group of students takes a vocabulary test. The average score of the first 10 students is 80%. The remaining 15 students have an average score of 65%. What is the overall average for the entire class?

70%

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72%

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74%

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76%

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Problem 2: Mrs. Smith is twice as old as her son, Ben. In 12 years, Mrs. Smith will be 50 years old. How old is Ben now?

13 years old

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14 years old

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15 years old

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16 years old

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SSS2 Maths Quiz 5.1 – Approximations

SSS2 Maths Quiz 5.1 – Approximations

Noah Wasiu September 5, 2024

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