How many glasses of 0.5 litre of water can be poured from a pitcher which holds 6 litres?

2 Answers
Dec 20, 2017

12 glasses

Explanation:

Imagine filling a large 6-liter pitcher with 0.5 liter glasses. In order to get 1whole glass of water into the pitcher, you need to pour in 2 glasses into the pitcher. Since the pitcher holds 6 liters, you need to pour in 2 glasses of water 3 times.

2 glasses of water = 1 liter of water
1 pitcher = 6 liters
2 * 6 = 12

Dec 20, 2017

12 glasses

Explanation:

Every time you pour a glass of water, there is 0.5 litre less in the pitcher.

You could do this calculation by subtracting until you an answer of 0, then count how many times you subtracted.

6-0.5-0.5-0.5 .......=0

However, division is a short cut for repeated subtraction.

'How many times can you subtract 0.5 from 6?

6 div 0.5

  • Using decimals: 6/0.5 " "larr get rid of the decimal.

= 6/0.5 xx10/10

= 60/5 = 12 glasses

  • Using fractions: 6/1 div 1/2

= 6/1 xx2/1 = 12 glasses