Welcome to your Approximations and Estimations(Study by Topics Junior Class) NAME EMAIL PHONE NUMBER 1. Express 156 to the nearest 10 175 160 150 165 2. Express 9126 to the nearest thousand. 10000 91000 9120 9000 9100 3. Correct 0.3748 to two significant figures. 0.38 0.30 0.40 0.37 0.39 4. You’ve decided to add another room to the carpet buying. The last room is 3.9m by 2.2m. How much carpet do I need for all three rooms? 20.9 m² 15 m² 23.2 m² 20 m² 5. Round to the nearest hundredths place:9,765.248 9,800 9,700 9,765.25 9,765.24 6. Write 0.3741 to 2 decimal places 0.37 0.374 0.42 0.4 7. Find correct to one decimal place 0.31744 ÷ 0.0407 0.8 8.0 7.9 7.8 8. Evaluate 4512/0.05 correct to three significant figures 902 9020 90240 90200 9. In order to take his family to a show, Sergio will have to purchase 2 adult tickets and 3 child tickets. Given that an adult ticket costs £32.60 and a child ticket costs £17.50, work out an estimate for how much it will cost Sergio to take his whole family to this show. 80 100 70 120 10. Calculate correct to 2 d.p 3.7 4.4 4 4.53 11. The area of a rectangle is 65.69 cm², if the length is 10.12 cm, calculate the width correct to 2 dp 6.49 cm 5.74 cm 6.50 cm 5.59 cm 12. Find the estimated answer of the equation :458.7 × 0.00567 4.2 2 3 2.6 13. Round off 2.6548 correct to one decimal place. 3 2.65 2.7 2.6 2.66 14. 0.009238 to 3 significant figures. 0.01 0.00924 0.923 0.009 0.00923 15. Find the estimated answers of the equation : 0.2 1 0.14 0.155 16. Estimate the answer to 20 15 10 25 17. The number 0.0047049, correct to 3 significant figures is 0.005 0.004705 0.0047 0.00470 18. Estimate the value of 70 47 34 40 19. A price of unleaded petrol is N97 per litre. A company buys 692 litres, calculate the actual amount paid by the company N70,000 N67,124 N72,763 N68,000 20. Find the estimated answers of the equation : 75 87.5 80 77.4 1 out of 20 Time is Up! Time's up