Time & moneyAges 7-9

Working backwards from finish time

Count backwards in minutes from an activity’s finish time to find when it started. Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 7-9

Working backwards from finish time

Take your time. Show your thinking.

1. A countdown timer shows 2 minutes and 45 seconds remaining. How many seconds is that in total?
2 m · 45 s · Working backwards from fin…
2. A countdown timer shows 14 minutes and 30 seconds remaining. How many seconds is that in total?
14 m · 30 s · Working backwards from fin…
3. A countdown timer shows 12 minutes and 40 seconds remaining. How many seconds is that in total?
12 m · 40 s · Working backwards from fin…
4. A countdown timer shows 14 minutes and 45 seconds remaining. How many seconds is that in total?
14 m · 45 s · Working backwards from fin…
5. A countdown timer shows 1 minute and 15 seconds remaining. How many seconds is that in total?
1 m · 15 s · Working backwards from fin…
6. A countdown timer shows 4 minutes and 15 seconds remaining. How many seconds is that in total?
4 m · 15 s · Working backwards from fin…
7. A countdown timer shows 9 minutes and 5 seconds remaining. How many seconds is that in total?
9 m · 5 s · Working backwards from fin…
8. A countdown timer shows 10 minutes and 45 seconds remaining. How many seconds is that in total?
10 m · 45 s · Working backwards from fin…
9. A countdown timer shows 9 minutes and 35 seconds remaining. How many seconds is that in total?
9 m · 35 s · Working backwards from fin…
10. A countdown timer shows 3 minutes and 15 seconds remaining. How many seconds is that in total?
3 m · 15 s · Working backwards from fin…
11. A countdown timer shows 11 minutes and 5 seconds remaining. How many seconds is that in total?
11 m · 5 s · Working backwards from fin…
12. A countdown timer shows 9 minutes and 40 seconds remaining. How many seconds is that in total?
9 m · 40 s · Working backwards from fin…

12 questions · Seed 104759 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 7-9

Working backwards from finish time

Answers and reasoning. Review before teaching.

1. A countdown timer shows 2 minutes and 45 seconds remaining. How many seconds is that in total?
165 seconds
2 × 60 = 120 seconds, plus 45 seconds = 165 seconds.
2. A countdown timer shows 14 minutes and 30 seconds remaining. How many seconds is that in total?
870 seconds
14 × 60 = 840 seconds, plus 30 seconds = 870 seconds.
3. A countdown timer shows 12 minutes and 40 seconds remaining. How many seconds is that in total?
760 seconds
12 × 60 = 720 seconds, plus 40 seconds = 760 seconds.
4. A countdown timer shows 14 minutes and 45 seconds remaining. How many seconds is that in total?
885 seconds
14 × 60 = 840 seconds, plus 45 seconds = 885 seconds.
5. A countdown timer shows 1 minute and 15 seconds remaining. How many seconds is that in total?
75 seconds
1 × 60 = 60 seconds, plus 15 seconds = 75 seconds.
6. A countdown timer shows 4 minutes and 15 seconds remaining. How many seconds is that in total?
255 seconds
4 × 60 = 240 seconds, plus 15 seconds = 255 seconds.
7. A countdown timer shows 9 minutes and 5 seconds remaining. How many seconds is that in total?
545 seconds
9 × 60 = 540 seconds, plus 5 seconds = 545 seconds.
8. A countdown timer shows 10 minutes and 45 seconds remaining. How many seconds is that in total?
645 seconds
10 × 60 = 600 seconds, plus 45 seconds = 645 seconds.
9. A countdown timer shows 9 minutes and 35 seconds remaining. How many seconds is that in total?
575 seconds
9 × 60 = 540 seconds, plus 35 seconds = 575 seconds.
10. A countdown timer shows 3 minutes and 15 seconds remaining. How many seconds is that in total?
195 seconds
3 × 60 = 180 seconds, plus 15 seconds = 195 seconds.
11. A countdown timer shows 11 minutes and 5 seconds remaining. How many seconds is that in total?
665 seconds
11 × 60 = 660 seconds, plus 5 seconds = 665 seconds.
12. A countdown timer shows 9 minutes and 40 seconds remaining. How many seconds is that in total?
580 seconds
9 × 60 = 540 seconds, plus 40 seconds = 580 seconds.

12 questions · Seed 104759 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 7-9

Working backwards from finish time

Take your time. Show your thinking.

1. A countdown timer shows 2 minutes and 45 seconds remaining. How many seconds is that in total?
2 m · 45 s · Working backwards from fin…
2. A countdown timer shows 14 minutes and 30 seconds remaining. How many seconds is that in total?
14 m · 30 s · Working backwards from fin…
3. A countdown timer shows 12 minutes and 40 seconds remaining. How many seconds is that in total?
12 m · 40 s · Working backwards from fin…
4. A countdown timer shows 14 minutes and 45 seconds remaining. How many seconds is that in total?
14 m · 45 s · Working backwards from fin…
5. A countdown timer shows 1 minute and 15 seconds remaining. How many seconds is that in total?
1 m · 15 s · Working backwards from fin…
6. A countdown timer shows 4 minutes and 15 seconds remaining. How many seconds is that in total?
4 m · 15 s · Working backwards from fin…
7. A countdown timer shows 9 minutes and 5 seconds remaining. How many seconds is that in total?
9 m · 5 s · Working backwards from fin…
8. A countdown timer shows 10 minutes and 45 seconds remaining. How many seconds is that in total?
10 m · 45 s · Working backwards from fin…
9. A countdown timer shows 9 minutes and 35 seconds remaining. How many seconds is that in total?
9 m · 35 s · Working backwards from fin…
10. A countdown timer shows 3 minutes and 15 seconds remaining. How many seconds is that in total?
3 m · 15 s · Working backwards from fin…
11. A countdown timer shows 11 minutes and 5 seconds remaining. How many seconds is that in total?
11 m · 5 s · Working backwards from fin…
12. A countdown timer shows 9 minutes and 40 seconds remaining. How many seconds is that in total?
9 m · 40 s · Working backwards from fin…

12 questions · Seed 104759 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 7-9

Working backwards from finish time

Answers and reasoning. Review before teaching.

1. A countdown timer shows 2 minutes and 45 seconds remaining. How many seconds is that in total?
165 seconds
2 × 60 = 120 seconds, plus 45 seconds = 165 seconds.
2. A countdown timer shows 14 minutes and 30 seconds remaining. How many seconds is that in total?
870 seconds
14 × 60 = 840 seconds, plus 30 seconds = 870 seconds.
3. A countdown timer shows 12 minutes and 40 seconds remaining. How many seconds is that in total?
760 seconds
12 × 60 = 720 seconds, plus 40 seconds = 760 seconds.
4. A countdown timer shows 14 minutes and 45 seconds remaining. How many seconds is that in total?
885 seconds
14 × 60 = 840 seconds, plus 45 seconds = 885 seconds.
5. A countdown timer shows 1 minute and 15 seconds remaining. How many seconds is that in total?
75 seconds
1 × 60 = 60 seconds, plus 15 seconds = 75 seconds.
6. A countdown timer shows 4 minutes and 15 seconds remaining. How many seconds is that in total?
255 seconds
4 × 60 = 240 seconds, plus 15 seconds = 255 seconds.
7. A countdown timer shows 9 minutes and 5 seconds remaining. How many seconds is that in total?
545 seconds
9 × 60 = 540 seconds, plus 5 seconds = 545 seconds.
8. A countdown timer shows 10 minutes and 45 seconds remaining. How many seconds is that in total?
645 seconds
10 × 60 = 600 seconds, plus 45 seconds = 645 seconds.
9. A countdown timer shows 9 minutes and 35 seconds remaining. How many seconds is that in total?
575 seconds
9 × 60 = 540 seconds, plus 35 seconds = 575 seconds.
10. A countdown timer shows 3 minutes and 15 seconds remaining. How many seconds is that in total?
195 seconds
3 × 60 = 180 seconds, plus 15 seconds = 195 seconds.
11. A countdown timer shows 11 minutes and 5 seconds remaining. How many seconds is that in total?
665 seconds
11 × 60 = 660 seconds, plus 5 seconds = 665 seconds.
12. A countdown timer shows 9 minutes and 40 seconds remaining. How many seconds is that in total?
580 seconds
9 × 60 = 540 seconds, plus 40 seconds = 580 seconds.

12 questions · Seed 104759 · Age guidance, not curriculum certification