NAPLAN Year-9 Numeracy Practice Test 3
Time Allowed: 24 min
Question 1: Factorise: 8x3 − 1 =
(A) (2x − 1)(4x2 − 2x + 1)
(B) (2x − 1)(4x2 + 4x + 1)
(C) (2x − 1)(4x2 − 4x + 1)
(D) (2x − 1)(4x2 + 2x + 1)
Question 2: Find α+β+δ:
(A) 360
(B) 180
(C) 400
(D) 380
Question 3: Find α
(A)α= 55∘
(B)α=57∘
(C)α=38∘
(D)α=66∘
Question 4: What is the probability of throwing 4 or 5 with a dice?
(A) ⅙
(B) ⅓
(C) ⅔
(D) ¼
Question 5: Multiply: 81.534 x 10⁴
(A) 8153400
(B) 8153.4
(C) 81534
(D) 815340
Question 6: Solve 2² x 3 x 5
(A) 30
(B) 50
(C) 48
(D) 60
Question 7: A side of the base of the triangular pyramid equals a=4cm and b=5cm . Find an area of the side of the pyramid.
(A) 45cm²
(B) 30cm²
(C) 25cm²
(D) 10cm²
Question 8: Calculate a volume of the pyramid, with a rhombus in the basis with diagonals 4cm, 6cm and a height of a pyramid 10cm.
(A) 40cm³
(B) 25cm³
(C) 20cm³
(D) 35cm³
Question 9: What is HCF (the highest common factor) of 15 and 20 ?
(A) 10
(B) 3
(C) 5
(D) 2
Question 10: Convert ⅜ to decimal form
(A) 0.3
(B) 0.35
(C) 0.375
(D) 0.4
Question 11: There are 6 green and 4 purple balls in a box. How many purple balls must be added to the box, so that probability of picking a purple ball is ⅔?
(A) 8
(B) 12
(C) 3
(D) 10
Question 12: Find the length of the side a
(A) 5
(B) 4
(C) 3
(D) 2