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

The number of significant figures in each number are as follows: a. 0.0023 - 2 significant figures b. 10,025 - 5 significant figures c. 734,000 - 3 significant figures (zeros at the end of a number without a decimal point are not significant) d. 0.08900 - 4 significant figures (zeros at the end of a number with a decimal point are significant) e. 10,205.06 - 7 significant figures f. 10,500 - 3 significant figures (zeros at the end of a number without a decimal point are not significant)

The calculations with the correct number of significant figures are: a. 1.2 + 2.35 = 3.6 (the least number of decimal places in the numbers being added is 1) b. 2.123 - 1.8 = 0.3 (the least number of decimal places in the numbers being subtracted is 1) c. 1.8 x 1.2 = 2.2 (the least number of significant figures in the numbers being multiplied is 2) d. 9.33 ÷ 2.1 = 4.4 (the least number of significant figures in the numbers being divided is 2)

The answers to the situations are: a. You need to measure the length and width of the sketch pads. A ruler or measuring tape can be used to obtain these measurements. You would use the tool to measure the length and width of each sketch pad. b. Aris needs to measure the volume of Hydrochloric Acid. A graduated cylinder or pipette can be used to measure this. He would use the tool to carefully measure out 5 mL of the acid. c. Michael and Ryan need to measure the time it takes for each of them to swim a certain distance. A stopwatch can be used to measure this. You would use the stopwatch to time each swimmer as they complete the task.