Whiteboardmaths.com © 2007 All rights reserved 5 7 2 1.

Slides:



Advertisements
Similar presentations
Customary System: Used mainly in the United States Metric System: Used in the rest of the world and in most scientific research and development.
Advertisements

Honors Geometry Unit Conversions. Before finding the area (and perimeter) of a figure, you must be certain that the units of measure agree for all the.
Converting Between Unit Systems
Pitch Perimeters WALT : calculate the perimeter of rectangles.
Part 3 Module 6 Units of Measure in Geometry. Linear Measure Linear measure is the measure of distance. For instance, lengths, heights, and widths of.
inches = 1 foot 3 feet = 1 yard 36 inches = 1 yard 5280 feet = 1 mile 1760 yards = 1 mile.
CUSTOMARY LINEAR UNITS GRADE 3.
Whiteboardmaths.com © 2007 All rights reserved
Whiteboardmaths.com © 2004 All rights reserved
Measuring using… INCHES FEET YARDS MILES
Using the Scale of a Map © T Madas.
Linear Measurement. Units of Measurement MILES You go FAR in your CAR!!!! Measure distances that are far—from Pfafftown to Disney!
8.3 – Area, Volume and Surface Area
MATHEMATICS Converting between Metric and Imperial Units.
Day 1.
Monday, March 3, POTD Name TWO pairs of supplementary angles. Name TWO pairs of vertical angles.
Quantify It! Introduction to Measurement Scales. Measurement Methods What are some ways to measure distance? What are some potential problems? Adapted.
Area of Rectangles and Triangles
“Different units for different purposes” (1) Length.
Surface Area Return to table of contents.
MATHEMATICS Perimeter. Lesson Objectives The aim of this powerpoint is to help you… to find missing side lengths to find perimeters of shapes.
Length, Mass and Capacity.
Area and Volume You will be able to use the correct unit for different measurements. use formula to find the area of shapes. find the volume of a prism.
Convert between metric and imperial measurements
AREA Remember: The perimeter of a shape is a measure of distance around the outside. The area of a shape is a measure of the surface/space contained within.
Session 19 – Measures GCSE Maths.
Perimeter and Area January 24, Perimeter Example 1Find the Perimeter a. a square with a side length of 10 inches10 in. P = 4sPerimeter formula =
Whiteboardmaths.com © 2007 All rights reserved
Whiteboardmaths.com © 2007 All rights reserved
Chapter Using Imperial Units for Length You will need your data pages to complete the following. Use only these data pages not your workbook for.
AREA Remember: The perimeter of a shape is a measure of distance around the outside. The area of a shape is a measure of the surface/space contained.
© T Madas.
M5 Converting Measures. Customary Metric Inches (in) Feet (ft) Yards (yd) Miles (mi) Millimeters (mm) Centimeters (cm) Meters (m) Kilometers (km) Length.
Whiteboardmaths.com © 2004 All rights reserved
AREA Remember: The perimeter of a shape is a measure of distance around the outside. The area of a shape is a measure of the surface/space contained within.
5.7 CONVERTING UNITS LO: CONVERT BETWEEN METRIC AND IMPERIAL UNITS OF MEASURE.
Whiteboardmaths.com © 2004 All rights reserved
5 ft 3ft 5ft 3ft Always write your answer with the unit of measurement.
Measuring Area.  Area: The number of square units that can be contained on a surface. Imperial area units > Inches in 2 > Feet ft 2 > Yards yd 2.
Unit Conversions. A physical quantity must include: Number + Unit.
Area of Regular and irregular polygons Mrs. Korchmaros.
Unit 8-1 Units of Measure and conversionsUnits of Measure and conversions.
Whiteboardmaths.com © 2004 All rights reserved
Rectangles, Parallelograms and Squares Area and Perimeter.
Q. What do we mean by finding the perimeter of a shape? Q. What strategies might you use for calculating the perimeter of a rectangle?
Measurement GLE # 18 The arrow points to a measurement of
By Didem Carr WORKING WITH MEASURE By Didem Carr
Chapter Using Imperial Units for Volume
Refresher Metric Units King Henry Died Monday Drinking Chocolate Milk
Whiteboardmaths.com © 2004 All rights reserved
The mid-ordinate rule Aims:
Who Wants To Be A Millionaire?
Whiteboardmaths.com © 2004 All rights reserved
Measurement.
Chapter 2 Measuring Length.
AREA The area of a shape is a measure of the surface/space contained within its perimeter. Remember: The perimeter of a shape is a measure of distance.
Week 10 Perimeter, area and volume (including circles)
How to remember different lengths in the metric system:
Length – The distance from one point to another.
Design For Disaster Relief Scaled Prototype Extension
M5.B.1 Demonstrate an understanding of measurable attributes of objects and figures, and the units, systems and processes of measurement. M5.B.1.2 Solve.
Section 9.4 Linear Measurements.
Perimeter, Circumference, and Area
2/5 = 1/10 = ¾ = ¼ = 6/10= 4/5 = 2/20 = 2/4 =.
Metric Units Monday, 22 April 2019.
Length in the Customary System.
Perimeter- is the distance around a figure.
Measuring Lengths Estimate, weights, capacities, and geometric measurements using benchmarks in measurement with appropriate units.
Presentation transcript:

Whiteboardmaths.com © 2007 All rights reserved

km to miles London 5 miles (8 km) To convert between miles and kilometres and vice versa it is useful to remember the fact that 5 miles  8 km. Although this is an approximation it happens to be a very good one with an error of less than 1%. 8 km 5 miles So if 8 km  5 miles 1 km  5 8 Mile (  both sides by 8) 1 km { 5 8 mile { Metric/Imperial Measures (Distance).

Paris 16 km Berlin 24 km To make very rough, quick mental calculations between km and miles you could use 1 km  ½ mile but you should be aware that your answers will be much less accurate (by about 20%). If you decide to use this method you could improve it by “adding something on” to your answer, (ideally 25%). Find the distances in miles. 16 x 5 8 = 10 miles (accurate) 16 x 1 2 = 8 miles (very rough) 24 x 5 8 = 15 miles (accurate) 24 x 1 2 = 12 miles (very rough) Metric/Imperial Measures (Distance). 1 km = 5 8 mile

Pisa 50 km Milan 80 km To make very rough, quick mental calculations between km and miles you could use 1 km  ½ mile but you should be aware that your answers will be much less accurate (by about 20%). If you decide to use this method you could improve by “adding something on” to your answer, (ideally 25%). Find the distances in miles. 50 x 5 8 = miles (accurate) 50 x 1 2 = 25 miles (very rough) 80 x 5 8 = 50 miles (accurate) 80 x 1 2 = 40 miles (very rough) Metric/Imperial Measures (Distance). 1 km = 5 8 mile

Prague 96 km Rome 150 km To make very rough, quick mental calculations between km and miles you could use 1 km  ½ mile but you should be aware that your answers will be much less accurate (by about 20%). If you decide to use this method you could improve by “adding something on” to your answer, (ideally 25%). Find the distances in miles. 96 x 5 8 = 60 miles (accurate) 96 x 1 2 = 48 miles (very rough) 150 x 5 8 = miles (accurate) 150 x 1 2 = 75 miles (very rough) Metric/Imperial Measures (Distance). 1 km = 5 8 mile

Questionkmmiles (accurate) miles (very rough) Complete the table below. Metric/Imperial Measures (Distance).

Questionkmmiles (accurate) miles (very rough) 142½2 263¾ ½ ½150 Complete the table below. Metric/Imperial Measures (Distance).

miles to km London 5 miles (8 km) To convert between miles and kilometres and vice versa it is useful to remember the fact that 5 miles  8 km. Although this is an approximation it happens to be a very good one with an error of less than 1%. 8 km 5 miles If 5 miles  8 km 1 mile  8 5 km (  both sides by 5) 1 mile { 1 mile  1.6 km 1.6 km { Metric/Imperial Measures (Distance).

To make rapid mental calculations when converting miles to km you might want to consider the following two methods. Method 1 is about 20% too big and method 2 is about 6% too small. You could obviously improve on these rough estimates by making appropriate corrections. 1 mile = 1.6 km Mental method 1 (very rough ) 66 miles x km Mental method 2 ( rough ) Add on ½ again 99 km Accurate Calculation 66 x 1.6 = km Consider the following example of converting 66 miles into km. ( ) Metric/Imperial Measures (Distance).

1 mile = 1.6 km Mental method 1 (very rough ) 120 miles x km Mental method 2 ( rough ) Add on ½ again 180 km Accurate Calculation 120 x 1.6 = 192 km Consider the following example of converting 120 miles into km. ( ) Which method do you think works best? Metric/Imperial Measures (Distance). To make rapid mental calculations when converting miles to km you might want to consider the following two methods. Method 1 is about 20% too big and method 2 is about 6% too small. You could obviously improve on these rough estimates by making appropriate corrections.

Metric Imperial measures (distance). Paris 10 miles Berlin 18 miles Find the distances in km. 10 x 1.6 = 16 km = 15 km (rough) 10 x 2 = 20 km (very rough) 1 mile = 1.6 km 18 x 1.6 = 28.8 km = 27 km (rough) 18 x 2 = 36 km (very rough) To make rapid mental calculations when converting miles to km you might want to consider the following two methods. Method 1 is about 20% too big and method 2 is about 6% too small. You could obviously improve on these rough estimates by making appropriate corrections.

Pisa 40 miles Milan 56 miles 40 x 1.6 = 64 km = 60 km (rough) 40 x 2 = 80 km (very rough) 1 mile = 1.6 km 56 x 1.6 = 89.6 km = 84 km (rough) 56 x 2 = 112 km (very rough) Find the distances in km. Metric/Imperial Measures (Distance). To make rapid mental calculations when converting miles to km you might want to consider the following two methods. Method 1 is about 20% too big and method 2 is about 6% too small. You could obviously improve on these rough estimates by making appropriate corrections.

Prague 116 miles Rome 200 miles 116 x 1.6 = km = 174 km (rough) 116 x 2 = 232 km (very rough) 1 mile = 1.6 km 200 x 1.6 = 320 km = 300 km (rough) 200 x 2 = 400 km (very rough) Find the distances in km. Metric/Imperial Measures (Distance). To make rapid mental calculations when converting miles to km you might want to consider the following two methods. Method 1 is about 20% too big and method 2 is about 6% too small. You could obviously improve on these rough estimates by making appropriate corrections.

Questionmiles km (accurate) km (rough + ½) km (very rough x 2) Complete the table below. Metric/Imperial Measures (Distance).

Questionmiles km (accurate) km (rough + ½) km (very rough x 2) 1587½ Complete the table below. Metric/Imperial Measures (Distance).

yards to m cm Metre = 100 cm 1 ft 2 ft 3 ft ft/inches 1 Yard  90 cm 1 Yard = 3 feet = 36 inches A yard is SMALLER than a metre. Metric/Imperial Measures (Distance). To convert between yards and metres and vice versa it is useful to remember the fact that 1 yd  0.9 m. This is a good approximation with an error of about 1%.

22 yards Find the length of the cricket pitch in metres. 22 x 0.9 = 19.8 m To convert between yards and metres and vice versa it is useful to remember the fact that 1 yd  0.9 m. This is a good approximation with an error of about 1%.

Metric/Imperial Measures (Distance). Find the length and width of the basket ball court in metres (nearest cm). Length = 28 x 0.9 = 25.2 m 28 yards 16.5 yards Width = 16.5 x 0.9 = m To convert between yards and metres and vice versa it is useful to remember the fact that 1 yd  0.9 m. This is a good approximation with an error of about 1%.

Metric/Imperial Measures (Distance). Find the length and width of the piece of wood in metres (nearest cm). Length = 2.9 x 0.9 = 2.61 m Width = 0.74 x 0.9 = 0.67 m 0.74 yards 2.9 yards To convert between yards and metres and vice versa it is useful to remember the fact that 1 yd  0.9 m. This is a good approximation with an error of about 1%.

Questionyards metres Complete the table below. Metric/Imperial Measures (Distance).

Questionyards metres Complete the table below. Metric/Imperial Measures (Distance).

m to yards cm yard  0.9 m 1 ft 2 ft 3 ft ft/inches Metric/Imperial Measures (Distance). If 0.9 m  1 yd 1 m  1.1 yds m  yds (  both sides by 0.9) 1 Yard m  1.1 yds This is also a good approximation with an error of about 1%.

Metric/Imperial Measures (Distance). 1 m  1.1 yds This is also a good approximation with an error of about 1%. Find the height and width of the door in yards. 2 m 1.3 m height = 2 x 1.1 = 2.2 yds width = 1.3 x 1.1 = 1.43 yds

Metric/Imperial Measures (Distance). 1 m  1.1 yds This is also a good approximation with an error of about 1%. Find the length and width of the playing pitch in yards. length = 105 x 1.1 = yds width = 40 x 1.1 = 44 yds 105 m 40 m

Metric/Imperial Measures (Distance). 1 m  1.1 yds This is also a good approximation with an error of about 1%. Find the height of the Eiffel Tower in yards. 320 m height = 320 x 1.1 = 352 yds

Questionmetres yards Complete the table below. Metric/Imperial Measures (Distance).

Questionmetres yards Complete the table below. Metric/Imperial Measures (Distance).

inches to cm cm Metre = 100 cm 1 ft 2 ft 3 ft ft/inches 1 Yard  90 cm 1 Yard = 3 feet = 36inches Metric/Imperial Measures (Distance). If 36 inches  90 cm inch  cm (  both sides by 36) 1 inch  2.5 cm 1 inch  2.5 cm This is a good approximation with an error of about 1%.

Metric/Imperial Measures (Distance). 1 inch  2.5 cm This is a good approximation with an error of about 1%. Find the length of both strips of wood in cm. A = 8 x 2.5 = 20 cm B = 11 x 2.5 = 27.5 cm A B 1 ft inches

Metric/Imperial Measures (Distance). 3.4 inches 2.2 inches 1 inch  2.5 cm This is a good approximation with an error of about 1%. Find the dimensions of the playing card in cm. length = 3.4 x 2.5 = 8.5 cm width = 2.2 x 2.5 = 5.5 cm

Metric/Imperial Measures (Distance). 1 inch  2.5 cm This is a good approximation with an error of about 1%. Find the dimensions of the pool table in cm. length = 84 x 2.5 = 210 cm width = 36 x 2.5 = 90 cm 84 inches 36 inches

Questioninches cm Complete the table below. Metric/Imperial Measures (Distance).

Questioninches cm Complete the table below. Metric/Imperial Measures (Distance).

cm to inches cm Metre = 100 cm 1 ft 2 ft 3 ft ft/inches 1 Yard  90 cm 1 Yard = 3 feet = 36inches Metric/Imperial Measures (Distance). If 2.5 cm  1 inch cm  inches (  both sides by 2.5) 1 cm  0.4 inches 1 cm  0.4 inches This is a good approximation with an error of about 1%.

Metric/Imperial Measures (Distance). Find the length of both strips of wood in inches. A = 15 x 0.4 = 6 inches B = 24 x 0.4 = 9.6 inches 1 cm  0.4 inches This is a good approximation with an error of about 1% cm A B

Metric/Imperial Measures (Distance). 9 cm 6.5 cm Find the dimensions of the playing card in inches. length = 9 x 0.4 = 3.6 inches width = 6.5 x 0.4 = 2.6 inches 1 cm  0.4 inches This is a good approximation with an error of about 1%.

Metric/Imperial Measures (Distance). Find the dimensions of the pool table in inches. length = 200 x 0.4 = 80 inches width = 34 x 0.4 = 13.6 inches 1 cm  0.4 inches This is a good approximation with an error of about 1%. 200 cm 34 cm

Questioncm inches Complete the table below. Metric/Imperial Measures (Distance).

Questioncm inches ½ Complete the table below. Metric/Imperial Measures (Distance).

Worksheets Questionkmmiles (accurate)miles (very rough) Complete the table below. Worksheet 1

Questionmiles km (accurate)km (rough + ½)km (very rough x 2) Complete the table below. Worksheet 2

Questionyards metres Complete the table below. Worksheet 3

Questionmetres yards Complete the table below. Worksheet 4

Questioninches cm Complete the table below. Worksheet 5

Questioncm inches Complete the table below. Worksheet 6