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數學題目 {20點}
發問:
1) Convert the following expressions into the simplest fractions.(a) 650% = _____(b) 3.04 = _____(c) 1+35% = _____(d) 1-75% = _____2) Which of the following is false ?i) 0.19 = 19%ii) 3/5% = 0.006iii) 1/2 = 0.5%vi) 3 = 300%3) Which of the following is/are greater than 1 ?i) 100%ii)... 顯示更多 1) Convert the following expressions into the simplest fractions. (a) 650% = _____ (b) 3.04 = _____ (c) 1+35% = _____ (d) 1-75% = _____ 2) Which of the following is false ? i) 0.19 = 19% ii) 3/5% = 0.006 iii) 1/2 = 0.5% vi) 3 = 300% 3) Which of the following is/are greater than 1 ? i) 100% ii) 125% ii) 1.06 vi) 17 / 20 4) If [P] is 25% greater than Q, which of the following is true ? i) Q is 20% less than P ii) Q is 25% less than P ii) Q is 30% less than P vi) None of the above 5) The length of a $100-banknote is approximately i) 15mm ii) 15cm iii) 15m vi) 15km 6) Mother has just bought some fruits. According to the figures shown on the right, answer the queations. {{Mother has bought 6 apples, 8 pears, 5 organges, 1 mango}} (a) Percentage of pears is _____ % (b) Numbers of apples is _____ % more than number of oranges (c) Number of oranges is _____% less than number of pears (d) The total number of _____ and _____ is 35% of the total number of fruits 6) The base area of a tank is 42cm二次方 and the water level is as high as 18cm. After putting 12 identical marbles into the tank, the water level rises to 50cm. Find the volume of a marble. Solution : 7) The height of a rectangular container is 80cm, the length and width of the base are 60cm and 45cm respectively. If 75.6L of water is poured into the container, find the distance between the water level and the top of the container. Solution : 8) Given that P = (2h, k -2), Q = (2h, 7 - 2k) and PQ = 12, find the possible values of k Solution : 9) State whether wach of the following statements is true(T) or false (F) i) The qraph of x -2y = 10 is a straight line ii) The graph of y = x + 5 does not pass through y-axis iii) The graph of y = 1 - 3x cuts the x-axis twice iv) The graph of x + 3y = 6 does not pass through the origin v) The grph of y = x+5 / 2 is not a staight line vi) (2, -1) is on the graph of 2x - y - 5 = 0 10) If A(-3, h) and B(k,2) are two points on the graph of 2x - 3y = 12, find the values of [h] and [k] Solution :
最佳解答:
1a.6.5 b.304% c.135% d.25% 2.(iii) 3.(ii)同(iii) 4.(ii) 5.(ii) 6a.40% b.20% c.37.5% d.apples&mango (題號呢到以下你寫錯哂)7.42x42x(50-18)/12 =1764x32/12 =4704 because 42x42x(50-18)(高)=12marbles cm,42x42x(50-18)/12=1marble 8.(80+75.6x1000/60/45)/2 =(75600/60/45)/2 =108/2 =54cm(2個之間) because75.6x1000=75600ml 75600/60/45=water high (water high+the most high)/2=between them 9.冇得做 10(i).f (ii).f (iii).t (iv).f (v).t (vi).t 11.冇得做
1)(a) 650% = 6.5= 6, 1/2 (b) 3.04 = 3, 1/25 (c) 1+35% = 1, 7/20 (d) 1-75% = 3/4 2) iii) 1/2 = 0.5% 3) ii) 125% ii) 1.06 4) vi) None of the above 5) ii) 15cm 6) (a) Percentage of pears is 40 % (b) Numbers of apples is 5% more than number of oranges (c) Number of oranges is 15% less than number of pears (d) The total number of apples and mango is 35% of the total number of fruits 6) Solution : [42 x (50-18) ] /12 = 72cm cubed 7) Solution : ?? 28 ?? 8) Solution : k = 51 9) i) The qraph of x -2y = 10 is a straight line T ii) The graph of y = x + 5 does not pass through y-axis F iii) The graph of y = 1 - 3x cuts the x-axis twice T iv) The graph of x + 3y = 6 does not pass through the origin T v) The grph of y = x+5 / 2 is not a staight line ?? vi) (2, -1) is on the graph of 2x - y - 5 = 0 T 10) If A(-3, h) and B(k,2) are two points on the graph of 2x - 3y = 12, find the values of [h] and [k] By subsitution, h= -5/3 ; k= 7/2 hope can help u ,,, (if i really got a right answer,, i hvn't double check) For the ??? question, sorry, i am not sure. :)
數學題目 {20點}
發問:
1) Convert the following expressions into the simplest fractions.(a) 650% = _____(b) 3.04 = _____(c) 1+35% = _____(d) 1-75% = _____2) Which of the following is false ?i) 0.19 = 19%ii) 3/5% = 0.006iii) 1/2 = 0.5%vi) 3 = 300%3) Which of the following is/are greater than 1 ?i) 100%ii)... 顯示更多 1) Convert the following expressions into the simplest fractions. (a) 650% = _____ (b) 3.04 = _____ (c) 1+35% = _____ (d) 1-75% = _____ 2) Which of the following is false ? i) 0.19 = 19% ii) 3/5% = 0.006 iii) 1/2 = 0.5% vi) 3 = 300% 3) Which of the following is/are greater than 1 ? i) 100% ii) 125% ii) 1.06 vi) 17 / 20 4) If [P] is 25% greater than Q, which of the following is true ? i) Q is 20% less than P ii) Q is 25% less than P ii) Q is 30% less than P vi) None of the above 5) The length of a $100-banknote is approximately i) 15mm ii) 15cm iii) 15m vi) 15km 6) Mother has just bought some fruits. According to the figures shown on the right, answer the queations. {{Mother has bought 6 apples, 8 pears, 5 organges, 1 mango}} (a) Percentage of pears is _____ % (b) Numbers of apples is _____ % more than number of oranges (c) Number of oranges is _____% less than number of pears (d) The total number of _____ and _____ is 35% of the total number of fruits 6) The base area of a tank is 42cm二次方 and the water level is as high as 18cm. After putting 12 identical marbles into the tank, the water level rises to 50cm. Find the volume of a marble. Solution : 7) The height of a rectangular container is 80cm, the length and width of the base are 60cm and 45cm respectively. If 75.6L of water is poured into the container, find the distance between the water level and the top of the container. Solution : 8) Given that P = (2h, k -2), Q = (2h, 7 - 2k) and PQ = 12, find the possible values of k Solution : 9) State whether wach of the following statements is true(T) or false (F) i) The qraph of x -2y = 10 is a straight line ii) The graph of y = x + 5 does not pass through y-axis iii) The graph of y = 1 - 3x cuts the x-axis twice iv) The graph of x + 3y = 6 does not pass through the origin v) The grph of y = x+5 / 2 is not a staight line vi) (2, -1) is on the graph of 2x - y - 5 = 0 10) If A(-3, h) and B(k,2) are two points on the graph of 2x - 3y = 12, find the values of [h] and [k] Solution :
最佳解答:
1a.6.5 b.304% c.135% d.25% 2.(iii) 3.(ii)同(iii) 4.(ii) 5.(ii) 6a.40% b.20% c.37.5% d.apples&mango (題號呢到以下你寫錯哂)7.42x42x(50-18)/12 =1764x32/12 =4704 because 42x42x(50-18)(高)=12marbles cm,42x42x(50-18)/12=1marble 8.(80+75.6x1000/60/45)/2 =(75600/60/45)/2 =108/2 =54cm(2個之間) because75.6x1000=75600ml 75600/60/45=water high (water high+the most high)/2=between them 9.冇得做 10(i).f (ii).f (iii).t (iv).f (v).t (vi).t 11.冇得做
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其他解答:1)(a) 650% = 6.5= 6, 1/2 (b) 3.04 = 3, 1/25 (c) 1+35% = 1, 7/20 (d) 1-75% = 3/4 2) iii) 1/2 = 0.5% 3) ii) 125% ii) 1.06 4) vi) None of the above 5) ii) 15cm 6) (a) Percentage of pears is 40 % (b) Numbers of apples is 5% more than number of oranges (c) Number of oranges is 15% less than number of pears (d) The total number of apples and mango is 35% of the total number of fruits 6) Solution : [42 x (50-18) ] /12 = 72cm cubed 7) Solution : ?? 28 ?? 8) Solution : k = 51 9) i) The qraph of x -2y = 10 is a straight line T ii) The graph of y = x + 5 does not pass through y-axis F iii) The graph of y = 1 - 3x cuts the x-axis twice T iv) The graph of x + 3y = 6 does not pass through the origin T v) The grph of y = x+5 / 2 is not a staight line ?? vi) (2, -1) is on the graph of 2x - y - 5 = 0 T 10) If A(-3, h) and B(k,2) are two points on the graph of 2x - 3y = 12, find the values of [h] and [k] By subsitution, h= -5/3 ; k= 7/2 hope can help u ,,, (if i really got a right answer,, i hvn't double check) For the ??? question, sorry, i am not sure. :)
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