Let's solve each problem step by step.
Problem 1:
Mr. Smith was filling up a 5 l container with water. He had a small 500 ml jug. How many times would he have to fill the jug to totally fill the container?
#### Solution:
1.
Convert liters to milliliters:
Since 1 liter = 1000 milliliters,
\( 5 \text{ liters} = 5 \times 1000 = 5000 \text{ milliliters} \).
2.
Determine how many jugs are needed:
Each jug holds 500 milliliters. To find out how many jugs are needed to fill 5000 milliliters, divide the total volume by the volume of one jug:
\( \frac{5000 \text{ ml}}{500 \text{ ml/jug}} = 10 \text{ jugs} \).
Answer: Mr. Smith needs to fill the jug
10 times.
---
Problem 2:
Mrs. Smith poured 900 ml out of a 1 l milk container. How much was left?
#### Solution:
1.
Convert liters to milliliters:
Since 1 liter = 1000 milliliters, the container initially has 1000 milliliters.
2.
Subtract the amount poured out:
Mrs. Smith poured out 900 ml, so the remaining amount is:
\( 1000 \text{ ml} - 900 \text{ ml} = 100 \text{ ml} \).
Answer: There were
100 ml left in the container.
---
Problem 3:
How many 100 ml glasses can be filled from a 1 l jug?
#### Solution:
1.
Convert liters to milliliters:
Since 1 liter = 1000 milliliters, the jug contains 1000 milliliters.
2.
Determine how many glasses can be filled:
Each glass holds 100 ml. To find out how many glasses can be filled, divide the total volume by the volume of one glass:
\( \frac{1000 \text{ ml}}{100 \text{ ml/glass}} = 10 \text{ glasses} \).
Answer: You can fill
10 glasses.
---
Problem 4:
Mr. Anderson was filling up a 2 l container with water. He had a small 200 ml jug. How many times would he have to fill the jug to totally fill the container?
#### Solution:
1.
Convert liters to milliliters:
Since 1 liter = 1000 milliliters,
\( 2 \text{ liters} = 2 \times 1000 = 2000 \text{ milliliters} \).
2.
Determine how many jugs are needed:
Each jug holds 200 milliliters. To find out how many jugs are needed to fill 2000 milliliters, divide the total volume by the volume of one jug:
\( \frac{2000 \text{ ml}}{200 \text{ ml/jug}} = 10 \text{ jugs} \).
Answer: Mr. Anderson needs to fill the jug
10 times.
---
Problem 5:
Mrs. Anderson poured 500 ml out of a 1 l milk container. How much was left?
#### Solution:
1.
Convert liters to milliliters:
Since 1 liter = 1000 milliliters, the container initially has 1000 milliliters.
2.
Subtract the amount poured out:
Mrs. Anderson poured out 500 ml, so the remaining amount is:
\( 1000 \text{ ml} - 500 \text{ ml} = 500 \text{ ml} \).
Answer: There were
500 ml left in the container.
---
Problem 6:
How many 200 ml glasses can be filled from a 1 l jug?
#### Solution:
1.
Convert liters to milliliters:
Since 1 liter = 1000 milliliters, the jug contains 1000 milliliters.
2.
Determine how many glasses can be filled:
Each glass holds 200 ml. To find out how many glasses can be filled, divide the total volume by the volume of one glass:
\( \frac{1000 \text{ ml}}{200 \text{ ml/glass}} = 5 \text{ glasses} \).
Answer: You can fill
5 glasses.
---
Final Answers:
1.
10 times
2.
100 ml
3.
10 glasses
4.
10 times
5.
500 ml
6.
5 glasses
\boxed{10, 100, 10, 10, 500, 5}
Parent Tip: Review the logic above to help your child master the concept of word problem worksheet 4th grade.
