In subtracting the capacity, we learn to find the difference between the units of capacity and volume. When subtracting, we need to note that the units of capacity i.e. liters and milliliters are converted to milliliters before subtraction and then follow the simple subtraction process.

We will learn about two different methods to solve subtraction using the standard unit and the smaller capacity unit. Students can practice both methods.

**(I)** Subtract units with conversion to milliliters

**(ii)** Subtract units without converting them to *Milliliters*

We can subtract units from measures of capacity like ordinary numbers.

Elaborated examples of capacity deduction:

**1.** Subtract 6 *l* 250 *ml* from 15 *l* 500 *ml*

**Solution:**

**Method 1 **(with conversion to *Milliliters*):

We know 1 *liter* = 1000 *Milliliters*

Now liters and milliliters are converted to milliliters before the subtraction is done and then we have to follow the simple subtraction process.

6th *l* 250 *ml* = (6 × 1000) *ml* + 250 *ml* = 6000

*ml* + 250 *ml* = 6250 *Milliliters*

fifteen *l* 500 *ml* = (15 × 1000) *ml* + 500 *ml* = 15,000

*ml* + 500 *ml* = 15500 *Milliliters*

The difference is now

15500

**ml**

–__ 6250 ml__

__9250__

**ml** = 9 *l* 250 *ml*

**Hence 15 ***l*** 500 ml – 6 l 250 ml = 9 l 250 ml**

**Method 2 **(without conversion to milliliters):

Here, liters and milliliters are arranged in different columns and then subtracted like ordinary numbers.

**Follow the steps:**

(I) *liter* and *Milliliters* 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*

**Hence the 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 to *Milliliters*):

We know 1 *liter* = 1000 *Milliliters*

Now *liter* and *Milliliters* are converted into

*Milliliters* before we do the subtraction, and then we have to follow the simple subtraction process.

6th *l* 650 *ml* = (6 × 1000) *ml* + 650 *ml* = 6000

*ml* + 650 *ml* = 6650 *Milliliters*

18th *l* 875 *ml* = (18 × 1000) *ml* + 875 *ml* = 18000

*ml* + 875 *ml* = 18875 *Milliliters*

The difference is now

18875 **ml**

– __ 6650 ml__

__12225__

**ml** = 12 *l* 225 *ml*

**Hence 18 l 875 ml – 6 l 650 ml = 12 l 225 I**

**Method 2 **(without conversion to *Milliliters*):

Here *liter* and *Milliliters* are arranged in different columns and then subtract like ordinary numbers.

**Follow the steps:**

(I) *liter* and *Milliliters* 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*

**Hence the difference of 6 l 650 ml from 18 l 875 ml = 12 l 225 ml **

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

**3rd** Subtract 7 *l* 850 *ml* from 19 *l* 375 *ml* without converting to *Milliliters*.

**Solution:**

Without converting to *Milliliters* Here *liter* and *Milliliters* are arranged in different columns and then subtract like ordinary numbers.

**Follow the steps:**

(I)* liter* and *Milliliters* are arranged in columns

(ii) 850 *ml* – 375 *ml*, so 1 *l* from 19 *l* is borrowed and to 375. added *ml*

1 *l* + 375 *ml* = 1375 *ml*

1375 *ml* – 850 *ml* = 525 *ml*

(iii) 19 *l* on 18. to reduce *l*

18th* l* – 7th *l* = 11 *l*

**l ml**

1 1000

19 375

–__ 7 850____ 11 525__

= 11 *l* 525 *ml*

**Hence the difference of 7 l 850 ml from 19 l 375 ml = 11 l 525 ml **

**4th** Subtract 4 *l* 250 *ml* from 13 *l* 750 *ml* with conversion to *Milliliters*.

**Solution:**

With conversion to *Milliliters* We’re going to do a simple subtraction.

We know 1 *liter* = 1000 *Milliliters*

Now liters and *Milliliters* are converted into *Milliliters* before we do the subtraction, and then we have to follow the simple subtraction process.

4th *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*

The difference is now

13750 **ml**

–__ 4250 ml__

__9500__

**ml** = 9 *l* 500 *ml*

**Hence 13 l 750 ml – 4th 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 is> 300 ml, we cannot subtract. We borrow 1 liter and subtract 980 from 1300. 1300 – 980 = 320 ml, write 320 under the ml column. Subtract liters. 100 – 76 = 24 l Write 24 under the liter column. |

So 101 l 300 ml – 76 l 980 ml = 24 l 320 ml

Word problems for subtracting capacity and volume:

**6th** Olivia bought 7 purchased *l* 500 *ml* from milk. She has 3. consumed *l* 700 *ml* Milk during the day. How much milk was left?

**Solution:**

Amount of milk bought = 7 *l* 500 *ml*

__Amount of milk consumed = 3 l 700 ml__

Therefore remaining amount of milk = 3 l 800 *ml*

The above capacity and volume subtraction tasks will help students practice the subtraction worksheet for the various units with or without conversion.

Questions and answers about capacity subtraction:

**I. Subtract the following:**

(i) 24 l 445 ml – 14 l 134 ml

(ii) 65 l 109 ml – 42 l 813 ml

(iii) 74 l 340 ml – 51 l 250 ml

(iv) 90 l 000 ml – 42 l 056 ml

(v) 81 l 550 ml – 62 l 125 ml

(vi) 72 l 160 ml – 54 l 320 ml

**Reply:**

**I.** (i) 10 L 311 ml

(ii) 22 l 296 ml

(iii) 23 l 90 ml

(iv) 47 l 944 ml

(v) 19 L 425 ml

(vi) 17 L 840 ml

● **Related concepts **

**● ****Standard unit of capacity**

**●**Conversion of the standard capacity unit

**●**Capacity expansion

**Math worksheets for 3rd grade**

**3rd grade math class**

**From capacity subtraction to the HOMEPAGE**

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