Math Class 5 – Measurement of Time – Addition & Subtraction

I. Time Addition

1. Add: 35 minutes 25 seconds + 15 minutes 5 seconds
2. Add: 42 minutes 10 seconds + 8 minutes 55 seconds
3. Add: 50 minutes 8 seconds + 0 minutes 59 seconds
4. Add: 28 minutes 55 seconds + 14 minutes 20 seconds
5. Add: 37 minutes 40 seconds + 19 minutes 50 seconds
6. Add: 45 minutes 15 seconds + 27 minutes 30 seconds
7. Add: 21 minutes 45 seconds + 11 minutes 55 seconds
8. Add: 33 minutes 28 seconds + 16 minutes 35 seconds
9. Add: 29 minutes 10 seconds + 13 minutes 45 seconds
10. Add: 38 minutes 55 seconds + 22 minutes 27 seconds
11. Add: 26 minutes 30 seconds + 10 minutes 20 seconds
12. Add: 48 minutes 40 seconds + 19 minutes 15 seconds
13. Add: 34 minutes 50 seconds + 17 minutes 55 seconds
14. Add: 0 minutes 25 seconds + 20 minutes 55 seconds
15. Add: 27 minutes 15 seconds + 14 minutes 40 seconds

II. Time Addition

1. Add: 3 years 10 months + 5 years 8 months
2. Add: 7 years 4 months + 2 years 3 months
3. Add: 4 years 6 months + 9 years 2 months
4. Add: 8 years 9 months + 3 years 11 months
5. Add: 6 years 2 months + 4 years 5 months
6. Add: 2 years 11 months + 5 years 6 months
7. Add: 5 years 3 months + 7 years 9 months
8. Add: 1 year 8 months + 6 years 4 months
9. Add: 9 years 1 month + 3 years 7 months
10. Add: 6 years 11 months + 4 years 3 months

III. Time Subtraction

1. Subtract: 45 minutes 30 seconds – 25 minutes 15 seconds
2. Subtract: 28 minutes 10 seconds – 12 minutes 45 seconds
3. Subtract: 50 minutes 48 seconds – 22 minutes 29 seconds
4. Subtract: 36 minutes 15 seconds – 17 minutes 34 seconds
5. Subtract: 42 minutes 55 seconds – 19 minutes 40 seconds
6. Subtract: 33 minutes 5 seconds – 14 minutes 9 seconds
7. Subtract: 48 minutes 45 seconds – 26 minutes 50 seconds
8. Subtract: 57 minutes 5 seconds – 38 minutes 25 seconds
9. Subtract: 30 minutes 25 seconds – 11 minutes 9 seconds
10. Subtract: 55 minutes 2 seconds – 39 minutes 45 seconds

IV. Time Subtraction

1. Subtract: 10 years 9 months – 4 years 7 months
2. Subtract: 8 years 5 months – 3 years 2 months
3. Subtract: 12 years 3 months – 5 years 10 months
4. Subtract: 6 years 11 months – 1 year 8 months
5. Subtract: 9 years 6 months – 2 years 4 months
6. Subtract: 11 years 8 months – 6 years 5 months
7. Subtract: 15 years 2 months – 7 years 9 months
8. Subtract: 13 years 11 months – 9 years 3 months
9. Subtract: 18 years 6 months – 12 years 10 months
10. Subtract: 20 years 3 months – 15 years 7 months