Customary Units

1. Customary Units

2. precise – to find a unit that measures nearest to the actual length of an object capacity – the amount a container will hold weight – how heavy an object is length – how long an object is Units of capacity: fluid ounce, cup, pint, quart, and gallon Units of length: inch, foot, yard, and mile Units of weight: ounce, pound, and ton Vocabulary

3. Linear Units

4. Changing Customary Units • When you change larger units to smaller units, you multiply. 25 yd = _____ ft Since you are changing yards to feet, multiply by 3. 25 X 3 = 75 So, 25 yd = 75 ft • When you change smaller units to larger units, you divide. 360 in. = _____ ft Since you are changing inches to feet, divide by 12. 360 ÷ 12 = 30 So, 360 in. = 30 ft

5. Write multiply or divide to tell how to change the unit. yards to feet ___________ inches to feet ___________ miles to feet ___________ yards to miles ___________ Change the unit. 60 yd = _____ ft 5 ft = _____ in 1,760 yd = _____ mi 33 ft = _____yd 300 ft = _____yd 2,640 ft = _____ mi 48 in. = _____ft 2 mi = _____ft 30 ft = _____yd Changing Customary Units Practice

6. Adding measurements: 2 ft 10in. + 3 ft 9 in. 5 ft 19 in. Think: 12 in. = 1 ft 19 in. = 1 ft 7 in. So, 5 ft 19 in. becomes (5 ft + 1 ft) + 7 in. which equals 6 ft 7 in. Subtracting measurements: 6 ft 7 in. - 1 ft 9 in. 9 in. is larger than 7 in. Think: 1 ft = 12 in. So, rename 6 ft 7 in. as 5 ft + 12 in. + 7 in. 5 ft 19 in. 6 ft 7 in. - 1 ft 9 in. 4 ft 10 in. Computing Customary Units

7. Find the sum or difference. 8 ft 4 in. + 2 ft 10 in. 6 ft 3 in. - 1 ft 8 in. 5 yd 2 ft + 2 yd 2 ft 17 ft - 12 ft 10 in. 18 ft 6 in. + 17 ft 9 in. 7 yd 4 ft - 3 yd 5 ft Computing Customary Units Practice

8. Capacity Customary Units of Capacity: 8 fluid ounces (fl oz) = 1 cup (c) 2 c = 1 pint (pt) 2 pt = 1 quart (qt) 4 c = 1 qt 4 qt = 1 gallon (gal)

9. Change the unit. 8 c = _____ pt 1 gal = _____ pt 12 c = _____ qt 1 pt = _____ fl oz 5 pt = _____ c 3 gal = _____ qt 10 c = _____ fl oz 12 pt = _____ qt Write <, >, or = for each. 4 c 1 gal 3 pt 1 qt 7 pt 110 fl oz 48 fl oz 4 pt 2 gal 7 pt Capacity Practice

10. Weight Customary Units for Measuring Weight 16 ounces (oz) = 1 pound (lb) 2,000 lb = 1 ton (T)

11. Write more of fewer for each statement. When I change tons to pounds, I expect to have _________ pounds. When I change ounces to pound, I expect to have ___________ pounds. When I change pounds to ounces, I expect to have _____________ ounces. Change the unit. 32 oz = _____ lb 40 lb = _____ oz 2 T = _____ lb Write which one is heavier. 46 oz or 3 lb 2 t or 5,000 lb ½ T or 500 lb 100 lb or 1,000 oz Weight Practice

12. Units of Time 60 seconds (sec) = 1 minute (min) 60 min = 1 hour (hr) 24 hr = 1 day 7 days = 1 week About 52 weeks = 1 year 365 days = 1 year 366 days = 1 leap year

13. Start time: 9:00 A.M. End time: 12:15 P.M. Elapsed time: ? To find how much time has elapsed, you can count forward on a clock from the starting time to the ending time. From 9:00 A.M. till 12:00 P.M. is 3 hr and from 12:00 till 12:15 is 15 min. So, the time elapsed is 3 hr 15 min. Start time: July 22, 7:00 A.M. End time: July 26, 5:00 P.M. Elapsed time: ? To find how much time has elapsed, you can count the whole days from 7:00 A.M. on July 22 to 7:00 A.M. on July 26. this is 4 days. Then count the hours from 7:00 A.M. till 5:00 P.M. this is 10 hours. So, the elapsed time is 4 days 10 hours. Elapsed Time

14. Write the time for each. Start: 5:25 P.M. 45 min elapsed time End time: ? Start: ? 2 hr 35 min elapsed time End time: 8:00 P.M. Start: July 12, 6:00 A.M. ? time has elapsed End: July 20, 8:30 A.M. Start time: 8:17 ? time has elapsed End time: 1:05 Elapsed Time Practice

15. Measuring Temperature Degrees Celsius (°C) are metric units for measuring temperature. Degrees Fahrenheit (°F) are customary units for measuring temperature.

16. Temperature Changes Practice Find the difference in temperature. 1. 212 °F and 98.6 °F 2. 100 °C and -25°C 3. 68 °F and -10 °F 4. -4 °C and 60 °C Complete the table: