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Grade
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Date
Questions20
Score

1

Convert 30 minutes into seconds

2

Convert 50 minutes 17 seconds into seconds

3

Convert 8 hours 30 minutes into seconds

4

Convert 7 hours 5 minutes 36 seconds into seconds

5

Convert 9 hours 35 minutes 18 seconds into seconds

6

Convert 10 minutes 21 seconds into seconds

7

Convert 25 minutes 15 seconds into seconds

8

Convert 2 hours 5 minutes 38 seconds into seconds

9

Convert 6 hours 10 minutes into seconds

10

Convert 8 hours 35 minutes into seconds

11

Convert 5 hours 15 minutes into seconds

12

Convert 11 hours 40 minutes into seconds

13

Convert 20 minutes 25 seconds into seconds

14

Convert 25 minutes into seconds

15

Convert 6 hours 30 minutes 26 seconds into seconds

16

Convert 20 minutes into seconds

17

Convert 5 hours 15 minutes 58 seconds into seconds

18

Convert 5 hours 30 minutes into seconds

19

Convert 5 hours 35 minutes into seconds

20

Convert 1 hours 35 minutes 51 seconds into seconds

Answers Key

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1

Convert 30 minutes into seconds

1800 seconds

step 1

Convert minutes into seconds

1 minute = 60 seconds

Therefore,

30 minutes = 30 x 60 seconds

30 x 60 seconds = 1800 seconds

1 minute = 60 seconds

Therefore,

30 minutes = 30 x 60 seconds

30 x 60 seconds = 1800 seconds

step 2

Write the statement

30 minutes = 1800 seconds

30 minutes = 1800 seconds

2

Convert 50 minutes 17 seconds into seconds

3017 seconds

step 1

Convert minutes into seconds

1 minute = 60 seconds

Therefore,

50 minutes = 50 x 60 seconds

50 x 60 seconds = 3000 seconds

1 minute = 60 seconds

Therefore,

50 minutes = 50 x 60 seconds

50 x 60 seconds = 3000 seconds

step 2

Add minutes to time in seconds

50 minutes + 17 seconds

3000 seconds + 17 seconds = 3017 seconds

50 minutes + 17 seconds

3000 seconds + 17 seconds = 3017 seconds

step 3

Write the statement

50 minutes 17 seconds = 3017 seconds

50 minutes 17 seconds = 3017 seconds

3

Convert 8 hours 30 minutes into seconds

30600 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

8 hours = 8x 60 minutes

8x 60 minutes = 480 minutes

1 hour = 60 minutes

Therefore,

8 hours = 8x 60 minutes

8x 60 minutes = 480 minutes

step 2

Find the total minutes for time in hours & minutes

8 hours + 30 minutes

510 minutes + 30 minutes = 510 minutes

8 hours + 30 minutes

510 minutes + 30 minutes = 510 minutes

step 3

Find the time in seconds for total time in minutes

1 minute = 60 seconds

510 x 60 seconds =30600seconds

1 minute = 60 seconds

510 x 60 seconds =30600seconds

step 4

Write the statement

8 hours 30 minutes = 30600 seconds

8 hours 30 minutes = 30600 seconds

4

Convert 7 hours 5 minutes 36 seconds into seconds

25536 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

7 hours = 7 x 60 minutes

7 x 60 minutes = 420 minutes

1 hour = 60 minutes

Therefore,

7 hours = 7 x 60 minutes

7 x 60 minutes = 420 minutes

step 2

Add the time in hours & minutes

7 hours + 5 minutes

420 minutes + 5 minutes = 425 minutes

7 hours + 5 minutes

420 minutes + 5 minutes = 425 minutes

step 3

Find the time in seconds for time in minutes

1 minute = 60 seconds

425 minutes = 425 x 60 seconds = 25500 seconds

1 minute = 60 seconds

425 minutes = 425 x 60 seconds = 25500 seconds

step 4

Add the seconds to hour & minutes

7 hours + 5 minutes +36 seconds

25500 seconds + 36 seconds = 25536

7 hours + 5 minutes +36 seconds

25500 seconds + 36 seconds = 25536

step 5

Write the statement

7 hours 5 minutes 36 seconds = 25536 seconds

7 hours 5 minutes 36 seconds = 25536 seconds

5

Convert 9 hours 35 minutes 18 seconds into seconds

34518 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

9 hours = 9 x 60 minutes

9 x 60 minutes = 540 minutes

1 hour = 60 minutes

Therefore,

9 hours = 9 x 60 minutes

9 x 60 minutes = 540 minutes

step 2

Add the time in hours & minutes

9 hours + 35 minutes

540 minutes + 35 minutes = 575 minutes

9 hours + 35 minutes

540 minutes + 35 minutes = 575 minutes

step 3

Find the time in seconds for time in minutes

1 minute = 60 seconds

575 minutes = 575 x 60 seconds = 34500 seconds

1 minute = 60 seconds

575 minutes = 575 x 60 seconds = 34500 seconds

step 4

Add the seconds to hour & minutes

9 hours + 35 minutes +18 seconds

34500 seconds + 18 seconds = 34518

9 hours + 35 minutes +18 seconds

34500 seconds + 18 seconds = 34518

step 5

Write the statement

9 hours 35 minutes 18 seconds = 34518 seconds

9 hours 35 minutes 18 seconds = 34518 seconds

6

Convert 10 minutes 21 seconds into seconds

621 seconds

step 1

Convert minutes into seconds

1 minute = 60 seconds

Therefore,

10 minutes = 10 x 60 seconds

10 x 60 seconds = 600 seconds

1 minute = 60 seconds

Therefore,

10 minutes = 10 x 60 seconds

10 x 60 seconds = 600 seconds

step 2

Add minutes to time in seconds

10 minutes + 21 seconds

600 seconds + 21 seconds = 621 seconds

10 minutes + 21 seconds

600 seconds + 21 seconds = 621 seconds

step 3

Write the statement

10 minutes 21 seconds = 621 seconds

10 minutes 21 seconds = 621 seconds

7

Convert 25 minutes 15 seconds into seconds

1515 seconds

step 1

Convert minutes into seconds

1 minute = 60 seconds

Therefore,

25 minutes = 25 x 60 seconds

25 x 60 seconds = 1500 seconds

1 minute = 60 seconds

Therefore,

25 minutes = 25 x 60 seconds

25 x 60 seconds = 1500 seconds

step 2

Add minutes to time in seconds

25 minutes + 15 seconds

1500 seconds + 15 seconds = 1515 seconds

25 minutes + 15 seconds

1500 seconds + 15 seconds = 1515 seconds

step 3

Write the statement

25 minutes 15 seconds = 1515 seconds

25 minutes 15 seconds = 1515 seconds

8

Convert 2 hours 5 minutes 38 seconds into seconds

7538 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

2 hours = 2 x 60 minutes

2 x 60 minutes = 120 minutes

1 hour = 60 minutes

Therefore,

2 hours = 2 x 60 minutes

2 x 60 minutes = 120 minutes

step 2

Add the time in hours & minutes

2 hours + 5 minutes

120 minutes + 5 minutes = 125 minutes

2 hours + 5 minutes

120 minutes + 5 minutes = 125 minutes

step 3

Find the time in seconds for time in minutes

1 minute = 60 seconds

125 minutes = 125 x 60 seconds = 7500 seconds

1 minute = 60 seconds

125 minutes = 125 x 60 seconds = 7500 seconds

step 4

Add the seconds to hour & minutes

2 hours + 5 minutes +38 seconds

7500 seconds + 38 seconds = 7538

2 hours + 5 minutes +38 seconds

7500 seconds + 38 seconds = 7538

step 5

Write the statement

2 hours 5 minutes 38 seconds = 7538 seconds

2 hours 5 minutes 38 seconds = 7538 seconds

9

Convert 6 hours 10 minutes into seconds

22200 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

6 hours = 6x 60 minutes

6x 60 minutes = 360 minutes

1 hour = 60 minutes

Therefore,

6 hours = 6x 60 minutes

6x 60 minutes = 360 minutes

step 2

Find the total minutes for time in hours & minutes

6 hours + 10 minutes

370 minutes + 10 minutes = 370 minutes

6 hours + 10 minutes

370 minutes + 10 minutes = 370 minutes

step 3

Find the time in seconds for total time in minutes

1 minute = 60 seconds

370 x 60 seconds =22200seconds

1 minute = 60 seconds

370 x 60 seconds =22200seconds

step 4

Write the statement

6 hours 10 minutes = 22200 seconds

6 hours 10 minutes = 22200 seconds

10

Convert 8 hours 35 minutes into seconds

30900 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

8 hours = 8x 60 minutes

8x 60 minutes = 480 minutes

1 hour = 60 minutes

Therefore,

8 hours = 8x 60 minutes

8x 60 minutes = 480 minutes

step 2

Find the total minutes for time in hours & minutes

8 hours + 35 minutes

515 minutes + 35 minutes = 515 minutes

8 hours + 35 minutes

515 minutes + 35 minutes = 515 minutes

step 3

Find the time in seconds for total time in minutes

1 minute = 60 seconds

515 x 60 seconds =30900seconds

1 minute = 60 seconds

515 x 60 seconds =30900seconds

step 4

Write the statement

8 hours 35 minutes = 30900 seconds

8 hours 35 minutes = 30900 seconds

11

Convert 5 hours 15 minutes into seconds

18900 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

5 hours = 5x 60 minutes

5x 60 minutes = 300 minutes

1 hour = 60 minutes

Therefore,

5 hours = 5x 60 minutes

5x 60 minutes = 300 minutes

step 2

Find the total minutes for time in hours & minutes

5 hours + 15 minutes

315 minutes + 15 minutes = 315 minutes

5 hours + 15 minutes

315 minutes + 15 minutes = 315 minutes

step 3

Find the time in seconds for total time in minutes

1 minute = 60 seconds

315 x 60 seconds =18900seconds

1 minute = 60 seconds

315 x 60 seconds =18900seconds

step 4

Write the statement

5 hours 15 minutes = 18900 seconds

5 hours 15 minutes = 18900 seconds

12

Convert 11 hours 40 minutes into seconds

42000 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

11 hours = 11x 60 minutes

11x 60 minutes = 660 minutes

1 hour = 60 minutes

Therefore,

11 hours = 11x 60 minutes

11x 60 minutes = 660 minutes

step 2

Find the total minutes for time in hours & minutes

11 hours + 40 minutes

700 minutes + 40 minutes = 700 minutes

11 hours + 40 minutes

700 minutes + 40 minutes = 700 minutes

step 3

Find the time in seconds for total time in minutes

1 minute = 60 seconds

700 x 60 seconds =42000seconds

1 minute = 60 seconds

700 x 60 seconds =42000seconds

step 4

Write the statement

11 hours 40 minutes = 42000 seconds

11 hours 40 minutes = 42000 seconds

13

Convert 20 minutes 25 seconds into seconds

1225 seconds

step 1

Convert minutes into seconds

1 minute = 60 seconds

Therefore,

20 minutes = 20 x 60 seconds

20 x 60 seconds = 1200 seconds

1 minute = 60 seconds

Therefore,

20 minutes = 20 x 60 seconds

20 x 60 seconds = 1200 seconds

step 2

Add minutes to time in seconds

20 minutes + 25 seconds

1200 seconds + 25 seconds = 1225 seconds

20 minutes + 25 seconds

1200 seconds + 25 seconds = 1225 seconds

step 3

Write the statement

20 minutes 25 seconds = 1225 seconds

20 minutes 25 seconds = 1225 seconds

14

Convert 25 minutes into seconds

1500 seconds

step 1

Convert minutes into seconds

1 minute = 60 seconds

Therefore,

25 minutes = 25 x 60 seconds

25 x 60 seconds = 1500 seconds

1 minute = 60 seconds

Therefore,

25 minutes = 25 x 60 seconds

25 x 60 seconds = 1500 seconds

step 2

Write the statement

25 minutes = 1500 seconds

25 minutes = 1500 seconds

15

Convert 6 hours 30 minutes 26 seconds into seconds

23426 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

6 hours = 6 x 60 minutes

6 x 60 minutes = 360 minutes

1 hour = 60 minutes

Therefore,

6 hours = 6 x 60 minutes

6 x 60 minutes = 360 minutes

step 2

Add the time in hours & minutes

6 hours + 30 minutes

360 minutes + 30 minutes = 390 minutes

6 hours + 30 minutes

360 minutes + 30 minutes = 390 minutes

step 3

Find the time in seconds for time in minutes

1 minute = 60 seconds

390 minutes = 390 x 60 seconds = 23400 seconds

1 minute = 60 seconds

390 minutes = 390 x 60 seconds = 23400 seconds

step 4

Add the seconds to hour & minutes

6 hours + 30 minutes +26 seconds

23400 seconds + 26 seconds = 23426

6 hours + 30 minutes +26 seconds

23400 seconds + 26 seconds = 23426

step 5

Write the statement

6 hours 30 minutes 26 seconds = 23426 seconds

6 hours 30 minutes 26 seconds = 23426 seconds

16

Convert 20 minutes into seconds

1200 seconds

step 1

Convert minutes into seconds

1 minute = 60 seconds

Therefore,

20 minutes = 20 x 60 seconds

20 x 60 seconds = 1200 seconds

1 minute = 60 seconds

Therefore,

20 minutes = 20 x 60 seconds

20 x 60 seconds = 1200 seconds

step 2

Write the statement

20 minutes = 1200 seconds

20 minutes = 1200 seconds

17

Convert 5 hours 15 minutes 58 seconds into seconds

18958 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

5 hours = 5 x 60 minutes

5 x 60 minutes = 300 minutes

1 hour = 60 minutes

Therefore,

5 hours = 5 x 60 minutes

5 x 60 minutes = 300 minutes

step 2

Add the time in hours & minutes

5 hours + 15 minutes

300 minutes + 15 minutes = 315 minutes

5 hours + 15 minutes

300 minutes + 15 minutes = 315 minutes

step 3

Find the time in seconds for time in minutes

1 minute = 60 seconds

315 minutes = 315 x 60 seconds = 18900 seconds

1 minute = 60 seconds

315 minutes = 315 x 60 seconds = 18900 seconds

step 4

Add the seconds to hour & minutes

5 hours + 15 minutes +58 seconds

18900 seconds + 58 seconds = 18958

5 hours + 15 minutes +58 seconds

18900 seconds + 58 seconds = 18958

step 5

Write the statement

5 hours 15 minutes 58 seconds = 18958 seconds

5 hours 15 minutes 58 seconds = 18958 seconds

18

Convert 5 hours 30 minutes into seconds

19800 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

5 hours = 5x 60 minutes

5x 60 minutes = 300 minutes

1 hour = 60 minutes

Therefore,

5 hours = 5x 60 minutes

5x 60 minutes = 300 minutes

step 2

Find the total minutes for time in hours & minutes

5 hours + 30 minutes

330 minutes + 30 minutes = 330 minutes

5 hours + 30 minutes

330 minutes + 30 minutes = 330 minutes

step 3

Find the time in seconds for total time in minutes

1 minute = 60 seconds

330 x 60 seconds =19800seconds

1 minute = 60 seconds

330 x 60 seconds =19800seconds

step 4

Write the statement

5 hours 30 minutes = 19800 seconds

5 hours 30 minutes = 19800 seconds

19

Convert 5 hours 35 minutes into seconds

20100 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

5 hours = 5x 60 minutes

5x 60 minutes = 300 minutes

1 hour = 60 minutes

Therefore,

5 hours = 5x 60 minutes

5x 60 minutes = 300 minutes

step 2

Find the total minutes for time in hours & minutes

5 hours + 35 minutes

335 minutes + 35 minutes = 335 minutes

5 hours + 35 minutes

335 minutes + 35 minutes = 335 minutes

step 3

Find the time in seconds for total time in minutes

1 minute = 60 seconds

335 x 60 seconds =20100seconds

1 minute = 60 seconds

335 x 60 seconds =20100seconds

step 4

Write the statement

5 hours 35 minutes = 20100 seconds

5 hours 35 minutes = 20100 seconds

20

Convert 1 hours 35 minutes 51 seconds into seconds

5751 seconds

step 1

Convert hours into minutes

1 hour = 60 minutes

Therefore,

1 hours = 1 x 60 minutes

1 x 60 minutes = 60 minutes

1 hour = 60 minutes

Therefore,

1 hours = 1 x 60 minutes

1 x 60 minutes = 60 minutes

step 2

Add the time in hours & minutes

1 hours + 35 minutes

60 minutes + 35 minutes = 95 minutes

1 hours + 35 minutes

60 minutes + 35 minutes = 95 minutes

step 3

Find the time in seconds for time in minutes

1 minute = 60 seconds

95 minutes = 95 x 60 seconds = 5700 seconds

1 minute = 60 seconds

95 minutes = 95 x 60 seconds = 5700 seconds

step 4

Add the seconds to hour & minutes

1 hours + 35 minutes +51 seconds

5700 seconds + 51 seconds = 5751

1 hours + 35 minutes +51 seconds

5700 seconds + 51 seconds = 5751

step 5

Write the statement

1 hours 35 minutes 51 seconds = 5751 seconds

1 hours 35 minutes 51 seconds = 5751 seconds