Maths Lit Worksheet - Estimating And Measuring (answers)

SAEP Matric Success – Zisukhanyo Maths Literacy Worksheet Tuesday 24th February 2009 Estimating and measuring - ANSWERS 1. Exam Success, Activity 4.1, Q1 a) 199,5 cm x 80,2 cm x 4 cm = 1,995 m x 0,802 m x 0,004 m b) 1,6m2 c) 64 000 cm3 2. Exam Success, Activity 4.1, Q4 a) 315,24 cm3 ≈ 315 ml 3. Exam Success, Activity 4.1, Q5 a) 1 800 kg c) 50 000 000 tonnes

b) 4,76 ≈ 5 times b) 1 g

4. Exam Success, Activity 4.2, Q1 42,214 km ≈ 42,2 km 5. Exam Success, Activity 4.2, Q2 10 605 m above sea level 6. Exam Success, Activity 4.2, Q5 a) 5 ft = 1 515 mm 2’1/2” ≈ 619 mm b) 864 square inches, 5 509 cm2 7. Exam Success, Activity 4.3, Q2 a) Perimeter = 21,4 cm b) Perimeter = 4π cm ≈ 12,6 cm

3 ft = 909 mm 2” ≈ 51 mm

Area = 30 cm2 Area ≈ 6,3 cm2

8. Exam Success, Activity 4.3, Q4 a) 3,35 m c) 486 tiles ≈ 490 tiles e) 59,4 m2

b) 53,6 m2 ≈ 54m2 d) 16 m

9. Exam Success, Activity 4.3, Q5 a) 73 ft ≈ 22m c) 365,73 square feet e) 31,92 m2 ≈ 32 m2

b) 10,02 ft d) 18,1 square ft

2’3” ≈ 682 mm 1 ¼” ≈ 32 mm