Printable Worksheets
Time Units #1 - Answers


 

Answers:

  1. 1hr 15 min = 60min + 15min = 75min

  2. 90 min = 60min + 30min = 1hr 30 min

  3. 1 min25 sec = 60 sec + 25 sec = 85 sec

  4. 2 hr 45 min 35 sec = 2 x 3600 + 45 x 60 + 35 = 7200 + 2700 + 35 = 9935 sec

  5. 1 hr 35 min 15 sec = 3600 sec + 35 x 60 sec + 15 sec = 3600 sec + 2100 sec + 15 sec = 5715 sec

  6. 2 hr 45 min = 2 x 60 min + 45 min = 120 min + 45 min = 165 min

  7. 106 min = 60 min + 46 min = 1hr 46 min

  8. 1 hr 130 sec = 1hr ( 2 x 60 sec + 10 sec) = 1 hr 2 min 10 sec

  9. 1200 < 3600 , hence there are 0 hr in 1200 sec; 1200 : 60 = 20, hence: 1200 sec = 0 hr 20 min 0 sec

  10. 5344 : 3600 = 1 R(1744); 1744 : 60 = 29 R (4); 5344 = 1 hr 29 min 4 sec

  11. 4000 sec = 4000 : 3600 = 1 R (400); 400 : 60 = 6 R (40); 4000 sec = 1 hr 6 min 40 sec

 

www.dositey.com