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Daniel Math Academy · Grade 4 Math

Add & Subtract Time

Skill P.2 · Time · ★★☆ Medium · Quarter 4

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Add or subtract. Regroup when you need to. 1 hr = 60 min · 1 min = 60 sec · 1 day = 24 hr · 1 wk = 7 days

1. 1
   $8\text{ min}40\text{ sec}-1\text{ min}34\text{ sec}=$ $\boxed{}\text{ min}\boxed{}\text{ sec}$
2. 2
   $8\text{ hr}43\text{ min}-1\text{ hr}23\text{ min}=$ $\boxed{}\text{ hr}\boxed{}\text{ min}$
3. 3
   $8\text{ hr}23\text{ min}-7\text{ hr}12\text{ min}=$ $\boxed{}\text{ hr}\boxed{}\text{ min}$
4. 4
   $7\text{ hr}41\text{ min}-5\text{ hr}32\text{ min}=$ $\boxed{}\text{ hr}\boxed{}\text{ min}$
5. 5
   $6\text{ hr}45\text{ min}-5\text{ hr}21\text{ min}=$ $\boxed{}\text{ hr}\boxed{}\text{ min}$
6. 6
   $9\text{ min}26\text{ sec}+9\text{ min}20\text{ sec}=$ $\boxed{}\text{ min}\boxed{}\text{ sec}$
7. 7
   $4\text{ min}33\text{ sec}+3\text{ min}38\text{ sec}=$ $\boxed{}\text{ min}\boxed{}\text{ sec}$

Daniel Math Academy · Grade 4 Math

Answer Key

P.2 Add & Subtract Time · ★★☆ Medium

1. 17 min 6 sec
2. 27 hr 20 min
3. 31 hr 11 min
4. 42 hr 9 min
5. 51 hr 24 min
6. 618 min 46 sec
7. 78 min 11 sec