Starter Questions Starter Questions 1. Calculate 8796 ÷ 100 2. What is 45 mins expressed as a fraction of an hour? 3. Calculate the area of a circle, with.

Slides:

Advertisements

Similar presentations

Starter However you like, multiply out: 11 x x x x x 1411 x 83.

Advertisements

Time Speed and Distance Time, speed and distance are related to each other by the formulae Distance = Speed X Time Speed = Distance ÷ Time Time = Distance.

National 4 NUM May-15Created by Mr. Lafferty Maths Dept. Revision of Level D/E Time Calculating Distance Time Distance Speed

Imagine This! You’re driving along a highway in Mexico when you notice this sign What should your speed be in miles per hour?

MNU 4-10b 5-Aug-15Created by Mr. Lafferty Maths Dept. Revision of Level 2 Time Calculating Distance Time Distance Speed Calculating.

Level F 5-Aug-15Created by Mr. Lafferty Maths Dept. Revision of Level D/E Time Calculating Distance Time Distance Speed Calculating.

Starter Questions Q1. True or false 2a (a – c + 4a) =2a 2 -2ac + 8a Q3. Q2. Find the missing angle 22 o.

Circumference of a Circle Math 10-3 Ch.3 Measurement.

AGENDA: DG minutes10 minutes Notes Lesson 2 Unit 5 DG 17 Mon.

Warm Up Multiply. Write answers in simplest form:

Lesson 4.2 Fractions, Decimals and Percents

Degrees, Minutes, Seconds

Calculating Distance Time Distance Speed Calculating Speed Calculating Time Converting Hour Minutes to Decimal Time Time, Distance and Speed Problems Converting.

Starter The following times are all in hours. Change them into hours and minutes… a)0.5 hours b)2.5 hours c)3.5 hours d)1.25 hours e)3.75 hours How would.

To calculate a fraction of a number mentally. To find a fraction of a quantity. To choose a way of working out and give a reason why that method was chosen.

Starter Questions 36 o. Learning Intention To explain how to divide by 20, 300, 4000 etc using our knowledge so far. Whole Numbers Multiply or Divide.

6.1.2 Angles. Converting to degrees Angles in radian measure do not always convert to angles in degrees without decimals, we must convert the decimal.

Dimensional Analysis Also called factor label method.

Dimensional Analysis 1 foot = 12 inches1 mile = 5280 ft 1000 mL = 1 L4 quarts = 1 gal Dimension Analysis makes use of equivalent statements. What are some.

Unit Conversion: The Factor Label Method. You can convert from one unit to another using a conversion factor A conversion factor is an expression for.

SPEED, DISTANCE AND TIME

Starter Questions.

Conversion Factor Method of Analysis. Conversion Factor Method a.k.a. Dimensional Analysis.

 Multiply rational expressions.  Use the same properties to multiply and divide rational expressions as you would with numerical fractions.

PERCENTS. WHAT ARE PERCENTS?  We’ve done lots of work with fractions and decimals. We’ve determined that fractions that denominators of 100 are useful.

Starter Questions Q1. Convert to 12 hr clock

MNU 3-10b 29-Oct-15Created by Mr. Lafferty Maths Dept. Basic DST (Whole Number Only) DST (Half and Quarter Hours) Time Distance Speed

Calculating Rates. Speeds Speeds are often described as rates. Ex: MPH = miles per hour MPS = meters per second In all the following slides we will use.

Unit 1 – Degrees Decimals and Degrees, Minutes, Seconds (DMS) Conversions, and Unit Conversions -You will be able to convert from degrees decimals to degrees,

Distance Speed and Time Calculating Speed Hrs and Min Calculating Distance Speed Distance or Time : Which Operation Hrs and Min Calculating Time Hrs and.

MOTION (PHYSICS UNIT): Chapters Converting to Scientific Notation:  Rule 1: Move the decimal to where there is one nonzero digit to the left of.

Starter Questions 1. It costs £6.40 for 4 theatre tickets.

Lesson E: Circumference of Circles Objective: To use formulas to find the circumference of circles.

Num 8-Jan-16Created by Mr. Lafferty Maths Dept. Time Distance Speed Revision of Level 2 Time Calculating Distance Calculating Speed.

Math – Multiplying Fractions, Mixed Numbers, and Rational Expressions 1.

4.1 Radian and Degree Measure (part 2) V. Evaluating degrees° minutes’ seconds” (D°M’S”) A) The distance between two degrees (ex: 15°& 16°) can be 1) divided.

Scientific Notation 1. Scientific notation is a way to shorten a large number (makes using it in calculations easier) 2.

Good Afternoon! 2/26/2016 Starter: What does it mean that a plane is traveling at 340 km/hr? Today we are going learn how to calculate using average speeds.

Percentages. What Are Percentages? A percentage is a number expressed as a fraction of 100. We use the percent sign % when representing numbers as a percentage.

Fractions and Decimal Fractions Fractions Decimal Fractions

N5 Num 16-Mar-16Created by Mr. Lafferty Maths Dept. Time Distance Speed Mixed Basic DST Converting Hrs Mins to Decimal Time Converting.

Counting Method When working out time difference we will use the Counting Method. This method will always work. Example :Find the time difference between.

Working with Percentages. Writing percentages as fractions ‘Percent’ means ‘out of 100’. To write a percentage as a fraction we write it over a hundred.

Vms Year 9 Mathematics Percentages.

Starter Questions 21/02/11 1. Calculate the circumference 15cm

Created by Mr. Lafferty Maths Dept.

Speed and Velocity Examples

Starter Questions Convert the following to minutes :-

Created by Mr. Lafferty Maths Dept.

Learning Journey – Percentages

Starter Percentage Decimal Fraction 35% 200% 60% 15% 75%

Starter Questions 08/02/11 Draw a distance and time graph to show the following journey. Calculate the speed at each point. I leave my house at 9am and.

D S T CAREFUL! ! 2hr 15 minutes to decimal is

CHAPTER 3 - Percent Section 3.1

2.6 – NOTES Dimensional Analysis

Starter Questions 24/01/11 A car travels 50km. The journey takes 30minutes. Calculate the speed in km/hr. 2. A plane flies 2000km at an average speed of.

Starter Questions Convert the following to decimal time :-

Speed and Velocity.

Fractions, Decimals & Percentages

Starter Questions Convert the following to minutes :-

Day 61 – Unit Conversions.

Created by Mr.Lafferty Maths Dept

Starter Questions 3cm.

An object travels 40 miles in 2 hrs. Calculate its speed?

Using Significant Digits

Time Distance Speed Calculating Distance Calculating Speed

Speed and Velocity Examples

Converting between Percentages, Decimals and Fractions

Multiplying and Dividing Rational Numbers

Expressing fractions as percentages

Presentation transcript:

Starter Questions Starter Questions 1. Calculate 8796 ÷ What is 45 mins expressed as a fraction of an hour? 3. Calculate the area of a circle, with radius 4cm. 4. Find a) -6 – (-3)b) -8 ÷ 4

Learning Intention To show how to convert time from hours and minutes to decimals and back again Hrs and Mins in Decimal Time Converting Decimal Time to Hrs Mins

Hrs Mins to Decimal Time Converting Hrs Mins to Decimal Time We already know : Example 1 : 48 minutes to decimal is = 0.8 hr Example 2 :2hr 15 minutes to decimal is= 2.25 hr To change minutes to a decimal ‘divide by 60’ 48 ÷ (15 ÷ 60)

Hrs Mins to Decimal Time To change minutes to a decimal time ‘divide by 60’ To convert back to hours and minutes we do the opposite : To change decimal time to minutes ‘multiply by 60’ Converting Decimal Time to Hrs Mins

Hrs Mins to Decimal Time Example 1 : 0.7 hrs to minutes is = 42 mins Example 2 : 3.4 hrs to hours and minutes is = 3 hrs 24 mins Converting Decimal Time to Hrs Mins To change decimal time to minutes ‘multiply by 60’ 0.7 x (0.4 x 60)

Hrs Mins to Decimal Time Converting Decimal Time to Hrs Mins Convert the following hrs and minutes into decimal time: a) 24 minutes b) 40 minutesc) 2 hrs 36 minutes Convert the following decimal time into hrs and minutes: a) 0.35 hrs b) 3.2 hrsc) 0.85 hrs d) 9 minutes e) 21 minutes f) 4 hrs 27 minutes d) 6.9 hrse) 0.8 hrsf) 1.65 hrs

Now try Ex 10.5 Pg 99 Q1&2 Time Distance Speed Converting Hrs Mins to Decimal Times