In addition to capacity, we will learn how to add up the various units of capacity and volume. When adding, we must ensure that the capacity units, ie liters and milliliters, are converted into milliliters before the addition and then follow the simple addition process.

We get to know two different methods to solve the addition with the standard unit and the smaller capacity unit. Students can practice both methods.

(I) Adding units with conversion to Milliliters

(ii) Adding units without converting them to Milliliters

We can add two or more capacity units l and ml like ordinary numbers.


Elaborated examples for adding capacity and volume:

1. 3rd Add l 600 ml and 6 l 300 ml

Solution:

Method 1 (with conversion to milliliters):

We know 1 liter = 1000 milliliters

Now liters (l) and milliliters (ml) are converted to ml before we do the addition, and then we have to follow the simple addition process.

3 l 600 ml = (3 × 1000) ml + 600 ml = 3000 ml + 600 ml = 3600 milliliters

6th l 300 ml = (6 × 1000) ml + 300 ml = 6000 ml + 300 ml = 6300 milliliters

Now add up

3600 ml

+ 6300 ml

9900 ml

= 9 l 900 ml

So 3 l 600 ml + 6 l 300 ml = 9 l 900 ml

Method 2 (without conversion to milliliters):

Here l and ml are arranged in different columns and then added up like ordinary numbers.

(I) l and ml are arranged in columns

(ii) 600 ml + 300 ml = 900 ml

(iii) 3 l + 6 l = 9 l

l ml
3 600

+ 6,300
9 900

= 9 l 900 ml

So the sum of 3 l 600 ml and 6 l 300 ml = 9 l 900 ml.

2. 5. Add l 725 ml and 8 l 450 ml

Solution:

Method 1 (with conversion to milliliters):

We know 1 liter = 1000 milliliters

Now liter (l) and milliliters (ml) are converted to ml before we do the addition, and then we have to follow the simple addition process.

5 l 725 ml = (5 × 1000) ml + 725 ml = 5000 ml + 725 ml = 5725 milliliters

8th l 450 ml = (8 × 1000) ml + 450 ml = 8000 ml + 450 ml = 8450 milliliters

Now add up

1
5725
ml

+ 8450 ml
14175
ml

= 14 l 175 ml

Therefore 5 l 725 ml + 8 l 450 ml = 14 l 175 ml

Method 2 (without conversion to milliliters):

Here l and ml are arranged in different columns and then added up like ordinary numbers.

(I) l and ml are arranged in columns

(ii) 725 ml + 450 ml = 1 l 175 ml.
175 ml is located under ml. 1 l is recorded l Pillar.

(iii) 1 I + 5 l + 8 l = 14 l

l ml
1
5 725

+ 8 450
14 175

= 14 l 175 ml

Hence the sum of 5 l 725 ml and 8 l 450 ml = 14 l 175 ml.

More solved examples of adding capacity where the method is mentioned in the given question.

3rd 17th Add l387 ml, 7 l 750 ml and 9 l without conversion to milliliters

Solution:

Without conversion to milliliters here l and ml are arranged in different columns and then added up like ordinary numbers.

(I) l and ml are arranged in columns

(ii) 387 ml + 750 ml = 1 l 137 ml.
137 ml is located under ml. 1 l is recorded l Pillar.

(iii) 1 I + 17th l + 7 l + 9 l = 34 l

l ml
21 1
17 387

7 750

+ 9,000
34 137

= 34 l 137 ml

Hence the sum of 17 l 387 ml, 7 l 750 ml and 9 l = 34 l 137 ml.

4th 13. Add l250 ml, 8th l 750 ml and 6 l with conversion to milliliters

Solution:

With the conversion to milliliters, we carry out the addition process here.

We know 1 liter = 1000 milliliters

Now liters (l) and milliliters (ml) are converted to ml before we do the addition, and then we have to follow the simple addition process.

13 l 250 ml = (13 × 1000) ml + 250 ml = 13000 ml + 250 ml = 13250 milliliters

8th l 750 ml = (8 × 1000) ml + 750 ml = 8000 ml + 750 ml = 8750 milliliters

6th l= (6 × 1000) ml = 6000 milliliters

Now add up

111
13250 ml

8750 ml

+ 6000 ml
28000
ml

= 28 l 000 ml

= 28000 ml

Therefore, 13 l250 ml + 8 l 750 ml + 6th l = 28000 ml

5. Add 36 l 275 ml and 16 l 150 ml.

Solution:

Arrange the numbers vertically.

First add the milliliters.

275 ml + 150 ml = 425 ml

Add the liters

36 l + 16 l = 52 l

Capacity expansion

So 36 l 275 ml + 16 l 150 ml = 52 l 425 ml

6th Add 150 l 810 ml and 90 l 300 ml

Solution:

Arrange the numbers vertically.

First add the milliliters.

810 ml + 300 ml = 1110 ml

= 1 l 110 ml

Write 110 under the ml column and put 1 l on the liter column.

Add the liters

150 l + 90 l + 1 = 241 l

Complement of capacity measures

So 150 l 810 ml + 90 l 300 ml = 241 l 110 ml

Word problems with adding capacity and volume:

7th Finn bought 3 l 250 ml Milk on monday, 2 l 750 ml on Wednesday and 3 l 500 ml on Friday. How much milk did Finn buy in those three days?

Solution:

1 1
Milk bought on Monday = 3 l 250 ml

Milk bought on Wednesday = 2 l 750 ml

Milk bought on Friday = 3 l 500 ml
+

Hence the total amount of milk bought during these 3 days = 9 l 500 ml

The above problems with adding capacity will help students practice the adding the various units worksheet with or without conversion.

Questions and answers about capacity expansion:

I. Add the following:

(i) 7 l 152 ml + 2 l 339 ml

(ii) 5 l 240 ml + 7 l 860 ml

(iii) 70 l 000 ml + 22 l 504 ml

(iv) 13 l 1290 ml + 18 l 160 ml

(v) 32 l 540 ml + 18 l + 210 ml

(vi) 19 l 300 ml + 3 l 900 ml

(vii) 62 l 200 ml + 15 ml 385 ml

(viii) 120 l + 625 ml + 30 l 750 ml

(ix) 21 l 845 ml + 32 l 116 ml + 38 l 082 ml

Adding units of capacity

Reply:

I. (i) 9 L 491 ml

(ii) 13 l 100 ml

(iii) 92 l 504 ml

(iv) 31 L 450 ml

(v) 50 l 750 ml

(vi) 23 L 200 ml

(vii) 77 L 585 ml

(viii) 151 l 375 ml

(ix) 92 l 43 ml

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Conversion of the standard capacity unit

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From capacity expansion to HOMEPAGE


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