Year 4 Mathematics : Time - Converting seconds and minutes ... - Free Printable

Let's solve each part of this Year 4 Mathematics worksheet step by step. The topic is conversion between minutes and seconds, using the fact that:

> 1 minute = 60 seconds

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Question 1: Convert minutes to seconds

We multiply the number of minutes by 60.

| Problem | Calculation | Answer |
|--------|-------------|--------|
| 1 min = ___ s | 1 × 60 = 60 | 60 s |
| 2 min = ___ s | 2 × 60 = 120 | 120 s |
| 3 min = ___ s | 3 × 60 = 180 | 180 s |
| 4 min = ___ s | 4 × 60 = 240 | 240 s |
| 5 min = ___ s | 5 × 60 = 300 | 300 s |
| 6 min = ___ s | 6 × 60 = 360 | 360 s |
| 7 min = ___ s | 7 × 60 = 420 | 420 s |
| 8 min = ___ s | 8 × 60 = 480 | 480 s |
| 9 min = ___ s | 9 × 60 = 540 | 540 s |
| 10 min = ___ s | 10 × 60 = 600 | 600 s |

✔ Answers:
- 1 min = 60 s
- 2 min = 120 s
- 3 min = 180 s
- 4 min = 240 s
- 5 min = 300 s
- 6 min = 360 s
- 7 min = 420 s
- 8 min = 480 s
- 9 min = 540 s
- 10 min = 600 s

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Question 2: Convert minutes and seconds to seconds

We convert minutes to seconds, then add the extra seconds.

(a) 1 min 10 s
= (1 × 60) s + 10 s
= 60 s + 10 s
= 70 s

(b) 2 min 37 s
= (2 × 60) s + 37 s
= 120 s + 37 s
= 157 s

(c) 5 min 4 s
= (5 × 60) + 4 = 300 + 4 = 304 s

(d) 6 min 55 s
= (6 × 60) + 55 = 360 + 55 = 415 s

(e) 3 min 28 s
= (3 × 60) + 28 = 180 + 28 = 208 s

(f) 7 min 10 s
= (7 × 60) + 10 = 420 + 10 = 430 s

✔ Answers:
- (a) 70 s
- (b) 157 s
- (c) 304 s
- (d) 415 s
- (e) 208 s
- (f) 430 s

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Question 3: Convert seconds to minutes

We divide seconds by 60 to get minutes.

(a) 120 s = ___ min
120 ÷ 60 = 2 min

(b) 360 s = ___ min
360 ÷ 60 = 6 min

(c) 180 s = ___ min
180 ÷ 60 = 3 min

(d) 480 s = ___ min
480 ÷ 60 = 8 min

✔ Answers:
- (a) 2 min
- (b) 6 min
- (c) 3 min
- (d) 8 min

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Question 4: Convert seconds into minutes and seconds

We divide the total seconds by 60. The quotient is minutes, and the remainder is seconds.

(a) 85 s = 60 s + ___ s
85 – 60 = 25 → So, 60 s + 25 s
= 1 min 25 s

(b) 139 s = 120 s + ___ s
139 – 120 = 19 → So, 120 s + 19 s
= 2 min 19 s

(c) 362 s = ___ min ___ s
362 ÷ 60 = 6 remainder 2
→ 6 × 60 = 360, so 362 – 360 = 2
= 6 min 2 s

(d) 510 s = ___ min ___ s
510 ÷ 60 = 8 remainder 30
→ 8 × 60 = 480, 510 – 480 = 30
= 8 min 30 s

(e) 278 s = ___ min ___ s
278 ÷ 60 = 4 remainder 38
→ 4 × 60 = 240, 278 – 240 = 38
= 4 min 38 s

(f) 191 s = ___ min ___ s
191 ÷ 60 = 3 remainder 11
→ 3 × 60 = 180, 191 – 180 = 11
= 3 min 11 s

✔ Answers:
- (a) 60 s + 25 s = 1 min 25 s
- (b) 120 s + 19 s = 2 min 19 s
- (c) 6 min 2 s
- (d) 8 min 30 s
- (e) 4 min 38 s
- (f) 3 min 11 s

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✔ Final Answers Summary:

#### 1. Minutes to Seconds
- 1 min = 60 s
- 2 min = 120 s
- 3 min = 180 s
- 4 min = 240 s
- 5 min = 300 s
- 6 min = 360 s
- 7 min = 420 s
- 8 min = 480 s
- 9 min = 540 s
- 10 min = 600 s

#### 2. Mixed to Seconds
- (a) 70 s
- (b) 157 s
- (c) 304 s
- (d) 415 s
- (e) 208 s
- (f) 430 s

#### 3. Seconds to Minutes
- (a) 2 min
- (b) 6 min
- (c) 3 min
- (d) 8 min

#### 4. Seconds to Minutes and Seconds
- (a) 60 s + 25 s = 1 min 25 s
- (b) 120 s + 19 s = 2 min 19 s
- (c) 6 min 2 s
- (d) 8 min 30 s
- (e) 4 min 38 s
- (f) 3 min 11 s

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