Grade Six Mathematics
Answers to last week’s exercises:
1. (a) Pole A = 2/5 of 15 = 6 (b) Ratio = 15:6 = 5:2
2. Fraction to be shaded = 4/6 percentage = 4/6 of 100 = 662/3% 3. 331/3% = 1/3; Number = 250/1 x
= 750; 0.5 x 750 = 375 4. 0.125
5. 2h 45min
6. (a) $40 (b) $25
7. 4250m
8. 14 packs
9. (a) 150ml (b) 600ml
10. 40 minutes
11. (a) 64cm2, 8cm
12. (a) 48(b)44
Hello Boys and Girls of Grade Six!
This week we will continue to do Practice exercises. Please make sure that you work carefully and work all the items.
1. What is the next prime number in the sequence below? 23, 29, 31, 37, ____________________
(A) 39 (B) 40 (C) 41 (D) 42
2. Which of the following numbers has the same value as 8 thousand + 7 hundred + 9 tens + 2 ones
(A) 2789 (B) 7892 (C) 8792 (D) 9872 3. Which of the following equations is correct?
(A) 4 (5 -3) = 3 (5 – 4)
(B) 5 + 4 – 3 = 4 +3 -5
(C) 4 + 5 + 3 = 5 + 3 + 4
(D) (5 + 3) + 4 = (4 ÷ 5) + 3
4. If 0.114 x _________ = 11.4, then _________ is (A) 1 (B) 10 (C) 100
Question 5 refers to the following circle. 5. The shaded part of the circle is a
(A) quadrant (B) sector
(C) segment (D) semi - circle
6. A polygon with 8 angles is called a/an
(A) octagon. (B) heptagon. (C) hexagon. (D) pentagon. (D) 1000
Question 7 refers to the following diagram which shows the outline of a shape. 7. What is the area in square units, of the shape shown above?
Question 8 refers to the following diagram, which shows a quadrilateral with its interior angles marked 1,2,3,4. 8. 9. 10. (A) 6 (B) 8 (C) 12 (D) 36
The obtuse angles in the diagram above are labelled
(A) 2 and 4 (B) 1 and 2 (C) 2 and 3 (D) 1 and 4
Given the set X = {11, 13, 17, 19, 21} and the set Y = {11, 17, 19}, which of the following statements is correct?
(A) Set Y ∩ Set X (C) Set X = Set Y
(B) Set X ∩ Set Y (D) Set Y כ Set X
Which one of the following pairs of sets is equal?
(A) { 2,4,6,8,10}, { The first five odd numbers} (B) {2} ,{ The only even prime number}
(C) {1,2,3,5,7}, { The first five prime numbers} (D) { }, {O}
11. A recipe for drink uses 12 cups of water to 3 cups of concentrate. What is the ratio of concentrate to water?
(A) 1:4 (B) 2:4 (C) 1:4 (D) 4:1
12. Which of the following sets shows common multiples of 5 and 10?
(A) { 2,10,20,} (C) {10,12,15}
(B) {10,15,20} (D) {30,40,50}
13. Which of the following is the highest common factor of 18 and 24?
(A) 3 (B) 4 (C) 6 (D) 9 14. The number 72 written as a product of its prime factors is:
(A) 2 x 2 x 3 x 3 x 3 (B) 4 x 3 x 3 x 3
(C) 2 x 2 x 2 x 3 x 3 (D) 2 x 3 x 3 x 6
Goodbye until next week, Boys and Girls.