All the solutions provided in McGraw Hill My Math Grade 4 Answer Key PDF Chapter 12 Lesson 5 Convert Metric Units will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 4 Answer Key Chapter 12 Lesson 5 Convert Metric Units
You can multiply to convert, or change between, units.
Math in My World
Example 1
The tree in Camryn’s front yard is 4 meters tall. How many centimeters tall is the tree?
Since meters are larger than centimeters, multiply.
4 meters = ______________ centimeters
So, the tree is ______________ centimeters tall.
Answer: 4 meters = 400 centimeters.
So, the tree is 400 centimeters tall.
Explanation: Given that,
The tree in Camryn’s front yard is 4 meters tall.
Now, we will find the tall of the tree in centimeters.
The meters are larger than the centimeters.
We know that, 1 meter = 100 centimeters.
So, 4 meters = 4 x 100 = 400 centimeters.
Therefore, the tree is 400 cm tall.
Example 2
Complete. 5 liters = 
milliliters
Since liters are larger than milliliters, multiply.
So, 5 liters = ________________ milliliters
Answer: So, 5 liters = 5000 milliliters.
Explanation: Given that, the value is 5 liters.
Now, we will find the given value in milliliters.
We know that, 1 liter = 1000 milliliters.
So, 5 liters = 5 x 1000 = 5000 milliliters.
Therefore, the given value in milliliters is 5000 milliliters.
Example 3
Convert 7 kilograms to grams.
7 kilograms = ? grams
Kilograms are larger than grams. So, use mulitplication.
Multiply by 1,000 because 1 kilogram = 1,000 grams.
1,000 × 7 = _____________
So, 7 kilograms = _________________ grams.
Answer: 1000 x 7 = 7000.
So, 7 kilograms = 7000 grams.
Explanation: Given that, the value is 7 kilograms.
Now, we will convert the given value to grams.
1 kilograms = 1000 grams.
So, 7 kilograms = 7 x 1000 = 7000 grams.
Therefore, the given value in grams is 7000 grams.
Guided Practice
Complete each conversion table.
Question 1.
Answer: The below is the given table with meters and kilometers values.
We all know that, 1 km = 1000 meters.
Based on that, we can find the values.
1 x 1000 = 1000m
2 x 1000 = 2000m
3 x 1000 = 3000 m
4 x 1000 = 4000 m
Question 2.
Answer: The below is the given table with centimeters and millimeters values.
We all know that, 1 centimeter = 10 millimeters.
Based on that, we can find the values.
1 x 10 = 10 mm
2 x 10 = 20 mm
3 x 10 = 30 mm
4 x 10 = 40 mm
Question 3.
Answer: The below is the given table with meters and centimeters values.
We all know that, 1 meter = 100 centimeters.
Based on that, we can find the values.
5 x 100 = 500 cm
6 x 100 = 600 cm
7 x 100 = 700 cm
8 x 100 = 800 cm
Question 4.
Answer: Given the table with some values.
Now, we will convert the given liters value into milliliters.
We know that, 1 liter = 1000 milliliters.
So, the values are,
1 x 1000 = 1000 milliliters
2 x 1000 = 2000 milliliters
3 x 1000 = 3000 milliliters
4 x 1000 = 4000 milliliters
Talk Math
Explain why multiplication is used to convert from a larger unit to a smaller unit.
Answer: Multiplication is used to convert a larger unit to a smaller one. All units start from lower units and go to high units. From mm to cm to m. This indicates that some addition makes it to higher unit.
Independent Practice
Complete each conversion table.
Question 5.
Answer: Given the table with some values.
Now, we will convert the given meters value into centimeters.
We know that, 1 meter = 100 centimeters
So, the values are,
4 x 100 = 400 centimeters
5 x 100 = 500 centimeters
8 x 100 = 800 centimeters
9 x 100 = 900 centimeters
Question 6.
Answer: Given the table with some values.
Now, we will convert the given kilograms value into grams.
We know that, 1 kilogram = 1000 grams.
So, the values are,
7 x 1000 = 7000 grams
9 x 1000 = 9000 grams
11 x 1000 = 11000 grams
13 x 1000 = 13000 grams
Algebra Find each unknown number.
Question 7.
6 L = mL
= ________________
Answer: 6000 ml
Explanation: Given the value is 6l.
Now, we will convert the given 6l value into milliliter.
We know that, 1 liter = 1000 milliliters.
So, the value is
6 x 1000 = 6000 milliliters.
Hence, the value 6l into milliliters is 6000 ml.
Question 8.
5 m = cm
= ________________
Answer: 500 cm
Explanation: Given the value is 5m.
Now, we will convert the given meters value into centimeter.
We know that, 1 meter = 100 centimeters.
So, the value is
5 x 100 = 500 centimeters.
Hence, the value 5 meters into centimeters is 500 cm.
Question 9.
2 kg = g
= ________________
Answer: 2000 g
Explanation: Given the value is 2 kg
Now, we will convert the given kilograms value into grams.
We know that, 1 kilogram = 1000 grams.
So, the value is
2 x 1000 = 2000 grams.
Hence, the given value 2kg into grams is 2000g.
Question 10.
5 cm = mm
= ________________
Answer: 50 mm
Explanation: Given the value is 5 cm.
Now, we will convert the given centimeters value into millimeters.
We know that, 1 centimeter = 10 millimeters.
So, the value is 5 x 10 = 50 millimeters.
Therefore, the given 5 cm values into millimeters is 50 mm.
Question 11.
12 kg = g
= ________________
Answer: 12000 grams
Explanation: Given the value is 12 kg.
Now, we will convert the given kilograms value into grams.
We know that, 1 kilogram = 1000 gram.
So, the value is 12 x 1000 = 12000 grams.
Therefore, the given 12 kg into grams is 12000 grams.
Question 12.
4 m = mm
= ________________
Answer: 4000 millimeters
Explanation: Given the value is 4 m.
Now, we will convert the given meters value into millimeters.
We know that, 1 meter = 1000 millimeters.
So, the value is 4 x 1000 = 4000 millimeters.
Therefore, the given 4m into millimeters is 4000 millimeters.
Question 13.
4 m = mm
= ________________
Answer: 4000 millimeters
Explanation: Given the value is 4 m.
Now, we will convert the given meters value into millimeters.
We know that, 1 meter = 1000 millimeters.
So, the value is 4 x 1000 = 4000 millimeters.
Therefore, the given 4m into millimeters is 4000 millimeters.
Question 14.
7 km = m
= ________________
Answer: 7000 m
Explanation: Given the value is 7 km.
Now, we will convert the given kilometers value into meters.
We know that, 1 kilometer = 1000 meters.
So, the value is 7 x 1000 = 7000 meters.
Therefore, after converting the given value is 7000 m.
Question 15.
19 m = cm
= ________________
Answer: 1900 cm
Explanation: Given the value is 19 m.
Now, we will convert the given meters value into centimeters.
We know that, 1 meter = 100 centimeters.
So, the value is 19 x 100 = 1900 centimeters.
Therefore, the given value in centimeters is 1900 cm
Question 16.
9 kg = g
= ________________
Answer: 9000 g
Explanation: Given the value is 9 kg.
Now, we will convert the given kilogram value into grams.
We know that, 1 kilogram = 1000 grams.
So, the value is 9 x 1000 = 9000 grams.
Therefore, after conversion, the value is 9000 g.
Question 17.
18 L = mL
= ________________
Answer: 18000 mL
Explanation: Given that, the value is 18L.
Now, we will convert the given liters’ value into milliliters.
We know that 1 liter = 1000 milliliters.
So, the value is 18 x 1000 = 18000 milliliters.
Therefore, the value of 18L in milliliters is 18000 milliliters.
Question 18.
22 cm = mm
= ________________
Answer: 220 mm
Explanation: Given the value is 22 cm.
Now, we will convert the given centimeters value into millimeters.
We know that 1 centimeter = 10 millimeters.
So, the value is 22 x 10 = 220 millimeters.
Therefore, after conversion, the value is 220 millimeters.
Question 19.
How many times larger is one kilogram than one gram?
Answer: One kilogram is 1000 times larger than one gram i.e., 1 kilogram = 1000 grams.
Question 20.
Mathematical PRACTICE Use Number Sense How many times longer is one kilometer than one meter?
Answer: A one-kilometer is 1000 times longer than one meter. i.e., 1 kilometer = 1000 meters.
Question 21.
How many times longer is one meter than one centimeter?
Answer: One meter is 100 times longer than a centimeter i.e., 1 meter = 100 centimeters.
Problem Solving
Question 22.
The mass of Kendall’s bicycle is 12 kilograms. What is the mass of the bicycle in grams?
Answer: The mass of the bicycle in grams is 12000 g.
Explanation: Given that,
The mass of Kendall’s bicycle is 12 kilograms.
Now, we will find the mass of the bicycle in grams.
So, convert the kg into grams.
We know 1 kilogram = 1000 grams.
Then the value is 12 kg = 12 x 1000 = 12000 grams.
Hence, the mass of the bicycle in grams is 12000g.
Question 23.
Mrs. Liu’s house is 7 meters tall. How tall is the house in centimeters?
Answer: The tall of the house in centimeters is 700 cm.
Explanation: Given that,
Mrs. Liu’s house is 7 meters tall
Now, we will find the tall of the house in centimeters.
So, convert the m into cm.
We know 1 meter = 100 centimeters.
Then the value is 7m = 7 x 100 cm= 700 cm.
Hence, the tall of the house is 700 cm.
Question 24.
Mathematical PRACTICE if Use Number Sense Javier needs 2 liters of iced tea for a picnic. How many milliliters of iced tea does he need?
Answer: He needs 2000 milliliters of iced tea.
Explanation: Given that,
Javier needs 2 liters of iced tea for a picnic.
Now, we will find the amount of iced tea he needed.
So, convert the L into ml.
We know, 1 liter = 1000 milliliters.
Then the value is 2L = 2 x 1000 ml = 2000 ml.
Hence, he needs 2000 milliliters of iced tea.
Question 25.
Avery’s dad is running a race that is 6 kilometers long. How many meters is that race?
Answer: Her dad running a race is 6000 meters.
Explanation: Given that,
Avery’s dad is running a race that is 6 kilometers long
Now, we will find the given race in meters.
So, convert the km into m.
We know 1 kilometer = 1000 meters.
Then the value is 6 km = 6 x 1000 m= 6000 m.
Hence, 6000 meters is that raced.
HOT Problems
Question 26.
Mathematical PRACTICE Which One Doesn’t Belong? Circle the measurement that does not belong. Explain.
Answer: The measurement of 10 pounds does not belong. Because its units are different, the remaining units are in grams and kilograms.
Question 27.
Building on the Essential Question When converting from a larger unit to a smaller unit, why does the value of the measurement increase?
Answer: When converting from a larger unit to a smaller unit, the value of the measurement increases because in any given measurement, there are smaller units than bigger units.
McGraw Hill My Math Grade 4 Chapter 12 Lesson 5 My Homework Answer Key
Practice
Algebra Find each unknown number.
Question 1.
7 kg = g
= ________________
Answer: 7000 g
Explanation: Given the value is 7kg
Now, we will convert the given kilogram value into grams.
We know that 1 kilogram = 1000 grams.
So, the values are, 7 x 1000 = 7000 grams.
Question 2.
mm = 9 cm
= ________________
Answer: 90 mm
Explanation: Given the value is 9 cm
Now, we will convert the given cm value into m.
We know that 1 centimeter = 10 millimeters.
So, the values is, 9 cm = 9 x 10mm = 90 mm.
Question 3.
5 L = mL
= ________________
Answer: 5000 mL
Explanation: Given the value is 5L
Now, we will convert the given Liters value into milliliters.
We know that 1 Liter = 1000 milliliters.
So, the value is 5L = 5 x 1000 mL = 5000 mL.
Question 4.
23 m = cm
= ________________
Answer: 2300 cm
Explanation: Given the value is 23 m.
Now, we will convert the value of the given meter into centimeters.
We know that 1 meter = 100 centimeters.
So, the value is, 23 m = 23 x 100 = 2300 cm.
Question 5.
17 kg = g
= ________________
Answer: 17000 g
Explanation: Given the value is 17 kg.
Now, we will convert the given kilogram value into grams.
We know that 1 kilogram = 1000 grams.
So, the value is 17 kg = 17 x 1000 g = 17000 g.
Question 6.
450 cm = mm
= ________________
Answer: 4500 mm
Explanation: Given the value is 450 cm.
Now, we will convert the given centimeters value into millimeters.
We know that 1 centimeter = 10 millimeters.
So, the value is 450 cm = 450 x 10 = 4500 mm.
Problem Solving
Question 7.
Molly measured the distance her paper airplane flew. The paper airplane traveled 5 meters. How many centimeters did the paper airplane travel?
Answer: 500 centimeters the paper airplane traveled.
Explanation: Given that,
Molly measured the distance her paper airplane flew.
The paper airplane traveled 5 meters.
Now, we will find out how many centimeters the paper airplane traveled.
So, convert the m into cm.
We know 1 meter = 100 centimeters.
Then the value is 5m = 5 x 100 cm= 500 cm.
Hence, 500 cm of the paper airplane traveled.
Question 8.
Thad is riding his bike to the library, which is 3 kilometers away. How many meters away is the library?
Answer: The Library is 3000 meters away.
Explanation: Given that,
Thad is riding his bike to the library, which is 3 kilometers away.
Now, we will find out how many meters the library is away.
So, convert the kilometers into meters.
We know that 1 kilometer = 1000 meters.
Then the value is 3 km = 3 x 1000 m= 3000 m.
Hence, the library is 3000 meters away.
Question 9.
Patrick has 5 liters of water. How many milliliters of water does he have?
Answer: He has 5000 milliliters of water.
Explanation: Given that,
Patrick has 5 liters of water.
Now, we will find out how many milliliters of water he had.
So, convert the L into mL.
We know 1 Liter = 1000 milliliters.
Then the value is 5L = 5 x 1000 mm= 5000 mm.
Hence, he has 5000 milliliters of water.
Question 10.
Maria’s suitcase has a mass of 14 kilograms. How many grams is the mass of her suitcase?
Answer: The mass of her suitcase is 14000 grams.
Explanation: Given that,
Maria’s suitcase has a mass of 14 kilograms
Now, we will find the mass of the suitcase in grams.
So, convert the kg into g.
We know 1 kilogram = 1000 grams.
Then the value is 14 kg = 14 x 1000 g = 14000 grams.
Therefore, the mass of the suitcase in grams is 14000g.
Question 11.
Mathematical PRACTICE Use Number Sense Minh is packing books into boxes. The mass of one of the boxes is 20 kilograms. What is the mass of the box in grams?
Answer: The mass of the box is 20000 grams.
Explanation: Given that,
Minh is packing books into boxes. The mass of one of the boxes is 20 kilograms
Now, we will find the mass of the box in grams.
So, convert the kg into g.
We know 1 kilogram = 1000 grams.
Then the value is 20 kg = 20 x 1000 g= 20000 g.
Hence, the mass of the box is 20,000 grams.
Test Practice
Question 12.
Which is equivalent to 300 meters?
(A) 30 kilometers
(B) 3 kilometers
(C) 30,000 centimeters
(D) 3,000 centimeters
Answer: Option C
Explanation: Given the value is 300 meters
Now, we will find the suitable option
We know that 1 meter = 100 centimeters
So, the values is 300 x 100 = 30000 centimeters.
Hence, option C 30,000 is correct.