Subtract separately: 15 liters from 31 liters 75 ml 125 ml, the answer is 15 liters 950 ml but how is it?
Answers
L ml
31 75
- 15 00
=16 75
L ml
16-1 = 15 075+1000=1075
- 00 125
= 15 950
= 15 litres 950 ml
Step-by-step explanation:
1. Subtract 6 l 250 ml from 15 l 500 ml
Solution:
Method 1 (with conversion into milliliter):
We know, 1 liter = 1000 milliliters
Now liter and milliliter are converted into milliliters before doing subtraction and then we need to follow the simple subtraction process.
6 l 250 ml = (6 × 1000) ml + 250 ml = 6000 ml + 250 ml = 6250 milliliters
15 l 500 ml = (15 × 1000) ml + 500 ml = 15000 ml + 500 ml = 15500 milliliters
Now difference is,
15500 ml
- 6250 ml
9250 ml
= 9 l 250 ml
Therefore, 15 l 500 ml - 6 l 250 ml = 9 l 250 ml
Method 2 (without conversion into milliliter):
Here liter and milliliter are arranged in different columns and then subtract like ordinary numbers.
Follow the steps:
(i) Liter and milliliter are arranged in columns
(ii) 500 ml - 250 ml = 250 ml
(iii) 15 l - 6 l = 9 l
l ml
15 500
- 6 250
9 250
= 9 l 250 ml
Therefore, difference of 6 l 250 ml from 15 l 500 ml = 9 l 250 ml
2. Subtract 6 l 650 ml from 18 l 875 ml
Solution:
Method 1 (with conversion into milliliter):
We know, 1 liter = 1000 milliliters
Now liter and milliliter are converted into milliliters before doing subtraction and then we need to follow the simple subtraction process.
6 l 650 ml = (6 × 1000) ml + 650 ml = 6000 ml + 650 ml = 6650 milliliters
18 l 875 ml = (18 × 1000) ml + 875 ml = 18000 ml + 875 ml = 18875 milliliters
Now difference is,
18875 ml
- 6650 ml
12225 ml
= 12 l 225 ml
Therefore, 18 l 875 ml - 6 l 650 ml = 12 l 225 m
Method 2 (without conversion into milliliter):
Here liter and milliliter are arranged in different columns and then subtract like ordinary numbers.
Follow the steps:
(i) Liter and milliliter are arranged in columns
(ii) 875 ml - 650 ml = 225 ml
(iii) 18 l - 6 l = 12 l
l ml
18 875
- 6 650
12 225
= 12 l 225 ml
Therefore, difference of 6 l 650 ml from 18 l 875 ml = 12 l 225 ml
More solved examples on subtraction of capacity where the method is mentioned in the given question.
3. Subtract 7 l 850 ml from 19 l 375 ml without conversion into milliliter.
Solution:
Without conversion into milliliter here liter and milliliter are arranged in different columns and then subtract like ordinary numbers.
Follow the steps:
(i) Liter and milliliter are arranged in columns
(ii) 850 ml - 375 ml, so 1 l from 19 l is borrowed and added to 375 ml
1 l + 375 ml = 1375 ml
1375 ml - 850 ml = 525 ml
(iii) 19 l reduce into 18 l
18 l - 7 l = 11 l
l ml
1 1000
19 375
- 7 850
11 525
= 11 l 525 ml
Therefore, difference of 7 l 850 ml from 19 l 375 ml = 11 l 525 ml
4. Subtract 4 l 250 ml from 13 l 750 ml with conversion into milliliter.
Solution:
With conversion into milliliter we will do simple subtraction.
We know, 1 liter = 1000 milliliters
Now liter and milliliter are converted into milliliters before doing subtraction and then we need to follow the simple subtraction process.
4 l 250 ml = (4 × 1000) ml + 250 ml = 4000 ml + 250 ml = 4250 milliliters
13 l 750 ml = (13 × 1000) ml + 750 ml = 13000 ml + 750 ml = 13750 milliliters
Now difference is,
13750 ml
- 4250 ml
9500 ml
= 9 l 500 ml
Therefore, 13 l 750 ml - 4 l 250 ml = 9 l 500 ml
5. Subtract 76 l 980 ml from 101 l 300 ml.
Solution:
Arrange the numbers vertically.
First subtract the ml
Since, 980 ml > 300 ml, we cannot subtract. We borrow 1 l and subtract 980 from 1300.
1300 – 980 = 320 ml, write 320 under ml column.
Subtract liters.
100 – 76 = 24 l
Write 24 under liters column.
Subtraction of Capacity
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Hence, 101 l 300 ml – 76 l 980 ml = 24 l 320 ml
Word problems on subtraction of capacity and volume:
6. Olivia purchased 7 l 500 ml of milk. She consumed 3 l 700 ml of milk during the day. How much milk was left?
Solution:
Quantity of milk purchased = 7 l 500 ml
Quantity of milk consumed = 3 l 700 ml
Therefore, quantity of milk left = 3 l 800 ml
The above problems on subtraction of capacity and volume will help the students to practice the worksheet on subtracting the different units with conversion or without conversion.