CBSE Class 4 Mathematics: Chapter 7 Jugs and Mugs NCERT Solutions

This question encourages observation and understanding of liquid quantities. The fox's explanation is key: 1 litre is equal to 1000 millilitres (mL). Therefore, 500 mL is exactly half of 1000 mL, making it half a litre, not more than a litre. The elephant drinks a large amount (50 L), while the squirrel asks for a smaller, specific amount (500 mL).

To find the total amount of kheer served, we need to multiply the quantity in each glass by the number of glasses.

Quantity of kheer in 1 glass = 100 mL

Number of glasses = 10

Total quantity of kheer = Quantity per glass × Number of glasses

$$10\; \backslash times\; 100\; \backslash text\{\; mL\}\; =\; 1000\; \backslash text\{\; mL\}$$

So, 10 times 100 millilitres is 1000 millilitres.

Since we know that 1000 mL is equal to 1 litre (L), the total amount of kheer served is 1 litre.

$$10\; \backslash times\; 100\; \backslash text\{\; mL\}\; =\; 1000\; \backslash text\{\; mL\}\; =\; 1\; \backslash text\{\; L\}$$

To calculate the total amount of kheer drunk by 1000 ants, we multiply the number of ants by the amount each ant drinks.

Amount of kheer drunk by each ant = 1 mL

Number of ants = 1000

Total kheer drunk = Number of ants × Amount per ant

$$1000\; \backslash times\; 1\; \backslash text\{\; mL\}\; =\; 1000\; \backslash text\{\; mL\}$$

Therefore, 1000 ants drink 1000 millilitres of kheer.

The goal is to find combinations of numbers that add up to 1 litre, which is equal to 1000 millilitres. Here are a few ways to help the donkey complete the chart:

• Option 1: 500 mL + 500 mL = 1000 mL (which is 1 L)
• Option 2: 200 mL + 200 mL + 200 mL + 200 mL + 200 mL = 1000 mL (which is 1 L)
• Option 3: 250 mL + 250 mL + 250 mL + 250 mL = 1000 mL (which is 1 L)
• Option 4: 100 mL + 100 mL + ... (10 times) = 1000 mL (which is 1 L)
• Option 5: 700 mL + 300 mL = 1000 mL (which is 1 L)

Students can create their own combinations using different numbers that sum up to 1000 mL.