18. Round down the following numbers to 2 significant figures.(a) 512(b) 4699(c)0.505619. (a) Round off 0.060 48 to 2 decimal places.(b) Round up 0.060 48 to 3 decimal places.(c)Round down 0.060 48 to 2 significant figures.(d) Round off 0.060 48 to 3 significant figures.20. (a) Round off 7092.2907 to the nearest ten.(b) Round down 7092.2907 to 1 decimal place.(c) Round down 7092.2907 to 3 significant figures.(d) Round up 7092.2907 to 6 significant figures.21. Tim has $142 953.42 in his saving account.(a) Round off this amount to(i) 2 significant figures, (ii) 3 significant figures.(b) Which of the approximate values found in (a) is more accurate?BANK22. Write down the number of significant figures for each of the following approximate values.(a) 266(d) 0.9845(b) 80 523(c)1.02(e) 0.001 52(f) 0.021 0023. Write down the possible numbers) of significant figures for each of the following approximate values.(a) 264(b) 1800(c)300, correct to the nearest ten(d) 5000, correct to the nearest integer

Calculate the following answer and round the final answer to the correct number of significant figures.2.2300001 x 2.00 = ?

Round up the following upto three significant figures:(i) 34.216 (ii) 10.4107 (iii) 0.04597(iv) 2808

Round the number 530.403 977 to the stated number of significant figures (s.f.)          (3)a) 2 s.fb) 4 s.fc) 6 s.f

1. Determine how many significant figures each number has.a. 0.0023b. 10,025c. 734,000d. 0.08900e. 10,205.06f. 10,5002. Do the given calculations and write the final answers with the correct number of significant figures.a. 1.2 + 2.35b. 2.123 - 1.8c. 1.8 x 1.2d. 9.33 ÷ 2.13. For every situation below, you need to answer these 3 questions:1. What quantitative observation/data is needed in the situation?2. What measuring tool must be used to obtain quantitative data?3. How will you use this tool?a. Your art teacher asked you to bring a sketch pad with a size of 21 cm x 29.7 cm. In the bookstore, the sales lady gave you three different sketch pads of varied sizes.b. Aris is experimenting with the reaction of microorganisms to the acidic environment. He needs to acquire 5 mL of Hydrochloric Acid.c. Michael and Ryan want to know who is the faster swimmer between the two of them. They asked you to observe them while they do the tasks and give them their time difference.Your answerClassmates will see your answerAssignedEstigfendType your answerTurn in1 class comment[AP-Student] Malachi Jacan AntiguaSep 23Reply to this commentI'm done!Add class comment…PostPrivate comments

State how many significant figures are proper in the results of the following calculations: (a) (106.7)(98.2)/(46.210)(1.01)106.798.2/46.2101.01 (b) (18.7)218.72 (c) (1.60×10−19)(3712)1.60×10−193712 .