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Name: _________________________________ Mathletics Diagnostic Test Year 6 - National Curriculum 4367 ANSWER KEY Number and Algebra Suggested Time: 50 minutes 40 marks Name: Teacher: Date: All questions are worth one mark. Sub-strand and content elaborations are based on Version 1.2 ACARA Australian National Mathematics Curriculum Year 6 | March 2011 © 3P Learning Pty Ltd - Mathletics National Curriculum Assessment Series - 2011 Name: _________________________________ Section 1 - Number and Place Value ACMNA122 a A prime number is divisible by: an even A number B a factor of 2 a composite C number 0 1 and itself b A composite number is a: product of its 0 prime factors only a perfect B square only a triangle C number only divisible by 1 D and itself c Which number below is both a triangle number and a perfect square? 0 36 B 25 C 45 D 3 d What are the prime factors of 100? A 5 B 4 and 6 0 2 and 5 D odd numbers e Which of the following are all square numbers? A 12, 14, 16 B 4, 6, 8 C 20, 30, 40 0 9, 49, 121 Space for working ACMNA122 /5 © 3P Learning Pty Ltd - Mathletics National Curriculum Assessment Series - 2011 Name: _________________________________ Section 2 - Number and Place Value ACMNA123/124 a On the numberline below, show 1 less than 6. Students should indicate 5 on the number line. 0 Teacher Discretion b What is 1100 divided by 20? A 1080 B 50 C 60 0 55 c What strategy could you use to answer (b) if you didn't have a calculator, or you wanted to check your answer? Teacher discretion Answer: d In the Snowy Mountains, the temperature during the day can often drop 6 degrees. If the temperature in the day is 1 degrees, what will the temperature overnight be? Draw your answer on the number line below. Students should indicate -5 degrees. 0o e In the Australian outback in winter, the day time temperatures can rise 10 degrees. If the night time temperature is -2 degrees, what would the day time temperature be? Draw your answer on the number line below. Students should indicate 8 degrees. 0o ACMNA123/124 /5 © 3P Learning Pty Ltd - Mathletics National Curriculum Assessment Series - 2011 Name: _________________________________ Section 3 - Fractions and Decimals ACMNA125/126/127 a Below is a number line showing halves. Write the equivalent fractions in quarters above. The first one is done for you. Write your answers in the boxes on the number line below. 1/4 0 2/4 3/4 1/2 1 2 b Which fraction is equivalent to 4/8? A 3/5 0 1/2 B 3/4 D 1/4 c My friend has a watermelon which has been cut into 6 pieces. If I get half, and my sister gets 1/3 how much is left? 1/3 or 2/6 Answer: d What is 4/12 of 48? A 18 0 16 B 32 D 15 A 11 0 9 B 8 D 18 e What is 3/9 of 27? ACMNA125-127 /5 © 3P Learning Pty Ltd - Mathletics National Curriculum Assessment Series - 2011 Name: _________________________________ Section 4 - Fractions and Decimals ACMNA128/129 a What is 2.4 + 0.3? A 2.1 0 2.7 C 3.7 D 1.7 B 0.36 C -1.82 D 1.18 b What is 0.96 - 0.78? 0 0.18 c A relay of 35 kms is being run by 4 athletes. How far does each athlete run? A 7.75 km B 17.5 km C 9.75 km 0 8.75 km d If 4 chocolates sell for $4.28, then how much would each chocolate sell for? $1.07 Answer: e Since the smallest Australian coin is the 5c piece, if you wanted to buy all 4 chocolates (from question d), how much would you actually have to pay the shopkeeper? $4.30 Answer: ACMNA128/129 /5 © 3P Learning Pty Ltd - Mathletics National Curriculum Assessment Series - 2011 Name: _________________________________ Section 5 - Fractions and Decimals ACMNA130/131 a b What is 36.15 ÷ 5 equivalent to? A 3615 ÷ 50 C 361.5 ÷ 500 0 3615 ÷ 500 D 3615 ÷ 5000 What is 14.35 x 5 equivalent to? A (1435 x 5) ÷ 10 0 (1435 x 5) ÷ 100 B (1435 x 5) x 100 D (143.5 x 5) ÷ 100 c Write down a way you could multiply 2.3 x 0.6 without a calculator? Teacher Discretion - eg: I could multiply 23 by 6, which would give 138 and then divide by 100. Answer: d e Choose the answer below that is equivalent to 3/21. A 14.29 or 14% C 1.43 or 1.4% 0 0.14 or 14% D 0.14 or 1.4% Choose the answer below that is equivalent to 42.86%. 0 9/21 or 0.43 C 9/21 or 4.29 B 9/21 or 42.86 D 90/2100 or 0.43 ` ACMNA130/131 /5 © 3P Learning Pty Ltd - Mathletics National Curriculum Assessment Series - 2011 Name: _________________________________ Section 6 - Money and Financial Mathematics ACMNA132 a 0 b A c d e A bookshop is selling old stock at a discount of 50%. How much would a book cost if it was originally $17? $8.50 B $7.50 C $9.50 D $9.00 A new mobile phone is coming out on the market and promises to be sold at a 10% discount for the first two weeks. If the cost price is $273, what will you pay if you buy in the first two weeks? $240.70 0 $245.70 C $27.30 D $250.70 A store is offering 25% off all clothing. If you have $51 worth of clothing that you want to buy, how much will you actually pay? A $12.75 0 $38.25 B $40.25 D $36.25 One item with the price tag of $49 is marked at 10% off, the other with a price tag of $24 is marked as 50% off. How much would you actually pay for both items? A $58.10 0 $56.10 B $54.10 D $16.90 Two items cost $72.49 and $ 36.24. How much would you pay if there is a discount of 25% on both items? A $65.24 C $27.18 B $54.37 0 $81.55 ACMNA132 /5 © 3P Learning Pty Ltd - Mathletics National Curriculum Assessment Series - 2011 Name: _________________________________ Section 7 - Patterns and Algebra ACMNA133 Questions a - c relate to the square sequence pictured below. a Draw what the next picture in the sequence would look like. 20 blocks a b b The table below relates to the sequence of images in question a. Which numbers are going to be in sequence 4, 6 and 7? A c d 20, 27, 32 B 20, 28, 33 C 20, 27, 33 0 20,28,32 For the above sequence, which is the best expression to represent the pattern? A ?=n+4 C ? = 4n +3 0 ? = 4n + 4 D ? = 4n + 1 A very famous sequence of numbers is called the 'Fibonacci Sequence'. 0, 1, 1 , 2, 3, 5, 8, 13, 21, 34, …. What would be the next two numbers in the sequence? e A 43, 55 C 67, 89 0 55, 89 D 43, 66 Write a sentence to describe the maths that makes up the Fibonacci sequence. Answer: Teacher discretion: "Keep adding the previous two numbers together" ACMNA133 /5 © 3P Learning Pty Ltd - Mathletics National Curriculum Assessment Series - 2011 Name: _________________________________ Section 8 - Patterns and Algebra ACMNA134 a Which equation is written correctly? 9=3x2+1 b A 9 = (3 x 2) + 1 C 9 = (3 x 2 + 1) B 9 = (3 x 2) - 1 0 9 = 3 x (2 + 1) Which equation is written correctly? 8 x 8 + 3 - 1 = 87 c 0 8 x (8 + 3) - 1 = 87 C 8 x 8 + (3 - 1) = 87 B 8 x (8 + 3 - 1) = 87 D (8 x 8 + 3) - 1 = 87 Which equation is written correctly? 32 = 64 x 8 + 8 d A 32 = 64 x 8 + 8 C 32 = 64 x (8 ÷ 8 + 8) B 32 = (64 x 8) + 8 0 32 = 64 x 8 ÷ (8 + 8) Rewrite the equation below with the brackets in the right place to make the equation correct. 8=2x3+1 8 = 2 x (3 + 1) Answer: e Which equation is written correctly? 32 = 8 x 4 A 32 = 24 + 1 0 32 = 8 x (3 + 1) C 32 = (8 x 3 + 1) D 32 = 8 x (3 + 2) ACMNA134 /5 © 3P Learning Pty Ltd - Mathletics National Curriculum Assessment Series - 2011