Created by Mr.Lafferty Maths Dept Time Time Intervals (Counting Method) Timetables www.mathsrevision.com Minutes and Seconds Stopwatch Time 16-Jun-18 Created by Mr.Lafferty Maths Dept

Created by Mr.Lafferty Maths Dept Starter Questions Q1. Calculate Q2. Round to 1 decimal place 2.354. Q3. How many minutes in 3hours www.mathsrevision.com Q4. The answer to the question is 180. What is the question. 16-Jun-18 Created by Mr.Lafferty Maths Dept

Created by Mr.Lafferty Maths Dept Counting Method Learning Intention Success Criteria We are learning the counting method to find the difference between two times including over night. 1. Understand the counting method. 2. Find time differences between two times, showing all working. www.mathsrevision.com 16-Jun-18 Created by Mr.Lafferty Maths Dept

Created by Mr.Lafferty Maths Dept Counting Method When working out time difference we will use the Counting Method. This method will always work. Example : Find the time difference between 08 32 hrs and 22 07 hrs Hrs Mins nearest hour www.mathsrevision.com hours What’s left 28 13 08 32 09 00 22 00 22 07 + 07 28 mins 13 hrs 7 mins 13 35 16-Jun-18 Created by Mr.Lafferty Maths Dept

Created by Mr.Lafferty Maths Dept But there are 60 minutes = 1hour 82 mins = 1hr 22mins Counting Method A bus leaves Kirkintilloch Main Street at 22 02 hrs and arrives in Aberdeen at 03 24 hrs. How long was the journey. nearest hour hours What’s left Hrs Mins www.mathsrevision.com 58 22 02 23 00 03 00 03 24 4 58 mins 4 hrs 24 mins + 24 5hrs 22mins 4 82 16-Jun-18 Created by Mr.Lafferty Maths Dept

Using Timetables 0639 0234 0156 2354 2257 2125 1642 1214 1148 0943 0854 0725 arrive leave Kingsbridge Birmingham Carlisle Glasgow (a) Write in 12 hour time when morning bus left Carlisle. 9.43am (b) Write in 12 hour time when evening bus left Carlisle. 11.54pm

Created by Mr.Lafferty Maths Dept Time Now try TJ2b Ex 1 Ch3 (page 21) www.mathsrevision.com 16-Jun-18 Created by Mr.Lafferty Maths Dept

Created by Mr.Lafferty Maths Dept Starter Questions www.mathsrevision.com 16-Jun-18 Created by Mr.Lafferty Maths Dept

Using Timetables 0639 0234 0156 2354 2257 2125 1642 1214 1148 0943 0854 0725 arrive leave Kingsbridge Birmingham Carlisle Glasgow (a) Write in 12 hour time when morning bus left Carlisle. 9.43am (b) Write in 12 hour time when evening bus left Carlisle. 11.54pm

+ Using Timetables But there are 60 minutes = 1hour 74 mins = 1hr 14mins Using Timetables 0639 0234 0156 2343 2257 2125 1642 1214 1148 0943 0854 0725 arrive leave Kingsbridge Birmingham Carlisle Glasgow (c) How long did the evening journey take in total. nearest hour Hrs Mins hours What’s left 35 35 21 25 22 00 06 00 06 39 8 35 mins 8 hrs 39 mins + 39 14 9hrs 14mins 8 74

Created by Mr.Lafferty Maths Dept Time Now try TJ2b Ex 2 Ch3 (page 23) www.mathsrevision.com 16-Jun-18 Created by Mr.Lafferty Maths Dept

Created by Mr.Lafferty Maths Dept Starter Questions www.mathsrevision.com 16-Jun-18 Created by Mr.Lafferty Maths Dept

Created by Mr.Lafferty Maths Dept Time Minutes and Secs Learning Intention Success Criteria We are learning to add and subtract minutes and seconds. 1. Add and subtract minutes and seconds. www.mathsrevision.com 16-Jun-18 Created by Mr.Lafferty Maths Dept

Adding & Subtracting Time 60 secs = 1min To add and subtract time we must remember (a) Add 4 mins 30secs to 2 mins 25 mins Always layout in columns Mins Secs www.mathsrevision.com 4 30 + 2 25 6 55 16-Jun-18 Created by Mr.Lafferty Maths Dept

Adding & Subtracting Time 60 secs = 1min 80 secs =1min 20 secs To add and subtract time we must remember (a) Add 3 mins 35 secs to 9 mins 45 mins Always layout in columns Mins Secs www.mathsrevision.com 3 35 + 9 45 =13min 20 secs 12 80 16-Jun-18 Created by Mr.Lafferty Maths Dept

Adding & Subtracting Time 60 secs = 1min To add and subtract time we must remember (a) Subtract 2 mins 35secs from 5 mins 40 mins Always layout in columns Mins Secs www.mathsrevision.com 3 1 5 40 - 2 35 3 05 16-Jun-18 Created by Mr.Lafferty Maths Dept

Adding & Subtracting Time 60 secs = 1min To add and subtract time we must remember (a) Subtract 3 mins 30secs from 7 mins 20 mins Always layout in columns Mins Secs www.mathsrevision.com 60 6 7 20 - 3 30 3 50 16-Jun-18 Created by Mr.Lafferty Maths Dept

Created by Mr.Lafferty Maths Dept Time Now try TJ2b Ex 3 Ch3 (page 25) www.mathsrevision.com 16-Jun-18 Created by Mr.Lafferty Maths Dept

Created by Mr.Lafferty Maths Dept Starter Questions Level D Q1. Calculate Q2. Round to 1 decimal place 2.354 Q3. How many minutes in 1 hour www.mathsrevision.com Q4. The answer to the question is 10. What is the question. 16-Jun-18 Created by Mr.Lafferty Maths Dept

Created by Mr.Lafferty Maths Dept Time Minutes and Secs Learning Intention Success Criteria We are learning to work out accuracy to 1 and 2 decimal places. 1. Round to 1 and 2 decimal places. www.mathsrevision.com 16-Jun-18 Created by Mr.Lafferty Maths Dept

Time www.mathsrevision.com Minute & Seconds Rounding time to 1 or 2 decimal places is just the same as rounding any number. Example : Round the times to 1 and 2 decimals places (a) 4.573 secs 4.6 secs to 1 decimal place www.mathsrevision.com 4.57 secs to 2 decimal place (b) 52.455 secs 52.5 secs to 1 decimal place 52.46 secs to 2 decimal place 16-Jun-18 Created by Mr.Lafferty Maths Dept

Created by Mr.Lafferty Maths Dept Time Minute & Seconds Note : In athletics the winner of a race corresponds to the smallest time. Example : In a race the times are as follows Mark 11.01 sec, Caitlin 10.05sec, Owen 10.03 sec, Amy 10.92 sec and Euan 10.73 sec. Work out who won the race and the order they came in. www.mathsrevision.com 1st Owen 10.03 sec 2nd Caitlin 10.05sec 4th Amy 10.92 sec 3rd Euan 10.73 sec 5th Mark 11.01 sec 16-Jun-18 Created by Mr.Lafferty Maths Dept

Time www.mathsrevision.com Minute & Seconds Example : In a race Katrina beat Daniel by 0.53 sec. Daniel’s time was 10.46 secs. What was Katrina’s time ? Katrina won therefore her time will be 0.53 less. www.mathsrevision.com 16-Jun-18 Created by Mr.Lafferty Maths Dept

Time Now try TJ2b Ex 4 Ch3 (page 26) www.mathsrevision.com Have you updated your Learning Log ? Time Now try TJ2b Ex 4 Ch3 (page 26) www.mathsrevision.com 16-Jun-18 Created by Mr.Lafferty Maths Dept