UNIT 2 Reading Measuring Tools Read in both English & Metric rules & tapes Read in both English & Metric rules & tapes Convert between English & Metric.

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Presentation transcript:

UNIT 2 Reading Measuring Tools Read in both English & Metric rules & tapes Read in both English & Metric rules & tapes Convert between English & Metric units Convert between English & Metric units Page 19 Learning Objectives

Fractional Rule major divisions major divisions –feet –inches –fractions: »1/2 = 2 per inch »1/4 = 4 per inch »1/8 = 8 per inch »1/16 = 16 per inch (usually the smallest division needed) UNIT 2 page UNIT 2 page

Fractional Rule 7 1/2” 8 5/8” 1’ - 0 5/16”

Reading Fractional Rule take 5 minutes to complete the measurements A thru H in Activity 2-1 on page 20 take 5 minutes to complete the measurements A thru H in Activity 2-1 on page 20 UNIT 2 page 20 UNIT 2 page 20

Metric Rule basic unit - meter basic unit - meter –millimetermm1/1000 m –centimetercm1/100 m –kilometerkm 1000 m UNIT 2 page 20 UNIT 2 page 20

Metric Rule 1” 25.4mm 20mm 38mm 115 mm 11.5 cm

Conversion of Units English to Metric 1 inch 12 inches 1 yard ( 36 inches ) inches 1 inch 12 inches 1 yard ( 36 inches ) inches 25.4 millimeters millimeters millimeters 1000 millimeters 25.4 millimeters millimeters millimeters 1000 millimeters UNIT 2 page 20 UNIT 2 page 20

Example Conversion convert 14 inches to millimeters UNIT 2 page 20 UNIT 2 page 20 solution: multiply 25.4 x 14 = mm solution: multiply 25.4 x 14 = mm

Example Conversion convert 11’-5” to metric UNIT 2 page 21 UNIT 2 page 21 solution: (11’ x 12”) + 5” = 137” 137” x 25.4 = mm mm = 3.48m 1000 solution: (11’ x 12”) + 5” = 137” 137” x 25.4 = mm mm = 3.48m 1000

Example Conversion convert 225 mm to inches UNIT 2 page 21 UNIT 2 page 21 solution: 225 ÷ 25.4 = 8.86” or 8 7/8” solution: 225 ÷ 25.4 = 8.86” or 8 7/8”

Example Conversion UNIT 2 page 21 UNIT 2 page 21 convert m to customary units solution: m = 23,450 mm 23,450 mm ÷ 25.4 = ” 912” = 76’-11.23” or 76’-11 1/4” (nearest 1/8”) solution: m = 23,450 mm 23,450 mm ÷ 25.4 = ” 912” = 76’-11.23” or 76’-11 1/4” (nearest 1/8”)

take 10 minutes to complete Activity 2-2 page 21 & test your knowledge on page 22 take 10 minutes to complete Activity 2-2 page 21 & test your knowledge on page 22 END OF UNIT 2 UNIT 2 Reading a Metric Rule Test Your Knowledge