Study

Semester 1 Challenge

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  • On which spinner is more likely to spin an odd number?
    Spinner B
  • 25% of a number is 120. What is the number?
    480
  • There are 10 cards numbered 1 to 10. Eugene picks an even number. He also picks a number greater than 5. Are the two events mutually exclusive events?Explain.
    Not mutually exclusive because 6, 8, and 10 are even numbers greater than 5.
  • Divide
    7/6 or 1 1/6
  • What is the probability scale of getting green color on the spinner?
    3/8 or 37.5%
  • What is the circumference of a circle with radius of 8 cm?
    50.24 cm
  • Which shape is on (-3,2)?
    square
  • The price of a T-shirt was $80. During a sale, the price became $60. What is the percentage of the discount during the sale?
    25%
  • Billy has 3/7 as many toys as Mike. Billy has 12 fewer toys than Mike. How many toys do they have altogether?
    30 toys
  • Mr Tim had to pay $21 for the 7% GST of the TV that he bought. How much is the price of the TV before GST?
    $300
  • A glass has a capacity of 2/5 litre. A bottle has a capacity of 3 litres. How many glasses of water are needed to fill the empty flask completely?
    7 1/2 glasses
  • The ratio of the length of Rope A to the length of Rope B is 4 : 5. Express the length of Rope A as a fraction of the length of Rope B.
    The length of Rope A is 4/5 of the length of Rope B.
  • For every 3 girls, there are 2 boys at the church. What fraction of the total number of pupils at the church is the number of girls?
    The number of girls is 3/5 of the total number of pupils at the church.
  • Find the value of 24 + 3x -14 when x = 8
    34
  • There were p cookies on a plate. Joyce and Kate shared the cookies equally. Then, Joyce ate 5 of the cookies she had. How many cookies did Joyce have left in terms of p?
    p/2 - 5
  • Bob's height is 10/11 of Jack's height. Jack is 165 cm. How tall is Bob?
    150 cm
  • Divide
    6
  • The volume of water in Jug A is 3/8 that of Jug B. What is the ratio of the volume of water in Jug B to the volume of water in Jug A?
    The ratio of the volume of water in Jug B to the volume of water in Jug A is 8 : 3.
  • Is this statement correct? The radius of a circle is twice its diameter.
    wrong
  • Simplify : 9 + 3k - 7 - 2k
    k + 2
  • Last year, there were 25 new students enrol to a school. This year, there are 32 new students enrol to that school. What is the percentage increase of the number of new students enrol to that school?
    28%
  • What is the area of a semicircle with radius of 7 cm?
    77 cm2
  • What is the coordinates of the green circle?
    (1,-5)
  • What is the perimeter of a quarter circle with diameter of 20?
    35.7 cm