All the solutions provided in McGraw Hill My Math Grade 4 Answer Key PDF Chapter 12 Review will give you a clear idea of the concepts.

Vocabulary Check

Draw a line to the sentence that each vocabulary word completes. q`
Answer: A line to the sentence that each vocabulary word completes is below, Color the metric units of length red. Color the metric units of capacity blue. Color the metric units of mass green. Then write each abbreviation on the roof.

Question 6. Answer: Given the figure, the figure is related to capacity.
So, we can fill blue color. Question 7. Answer: Given the figure, the figure is related to length.
So, we can fill the Red color. Question 8. Answer: Given the figure, the figure is related to mass.
So, we can fill the green color. Question 9. Answer: Given the figure, the figure is related to length.
So, we can fill the Red color. Question 10. Answer: Given the figure, the figure is related to capacity.
So, we can fill blue color. Question 11. Answer: Given the figure, the figure is related to mass.
So, we can fill the green color. Question 12. Answer: Given the figure, the figure is related to length.
So, we can fill the Red color. Question 13. Answer: Given the figure, the figure is related to length.
So, we can fill the Red color. Concept Check

Question 14.
Measure the width of the flower to the nearest centimeter. Length: ______________

Explanation: Given the flower,
Now, we will find the width of the flower to the nearest centimeter.
So, the nearest estimated width of the flower is 3 cm.
Hence, the length of the flower is 3 cm.

Question 15.
Choose the best estimate for the length of a bottle of glue. (A) 15 millimeters
(B) 15 centimeters
(C) 15 meters
(D) 15 kilometers

Explanation: Given the glue bottle.
Now, we will estimate the length of a bottle of glue.
Based on the given option, the option B is correct.
Because the 15 kilometers, 15 meters are very high and the 15 millimeters is very small.
So, the best estimated option is B.

Question 16.
Circle the more reasonable estimate for the capacity of a bucket 6 milliliters
6 liters

Explanation: Given the water bucket,
Now, we will estimate the capacity of a bucket.
So, the 6 liters is best estimate. Because the 15 milliliters is very small.
So, the best estimated capacity of a bucket is 6 liters.

Question 17.
Circle the more reasonable estimate for the mass of a chair. 15 grams
15 kilograms

Explanation: Given the chair,
Now, we will estimate the mass of a chair.
So, the 15 kilograms is best estimate. Because the 15 grams is very small.
So, the best estimated mass of a chair is 15 kilograms.

Question 18.
Complete the conversion table. Answer: The conversion of table is below, Question 19.
How many times longer is one kilometer than one meter?
Answer: 1000 times longer is one kilometer than one meter.

Question 20.
How many times longer is one centimeter than one millimeter?
Answer: 10 times longer is one centimeter than one millimeter.

Problem Solving

Question 21.
Carson has 0.21 of a dollar. How many different combinations of coins could he have?

Answer: Carson has 0.21 of a dollar. So, the different combinations of coins could he have 2 dimes, 1 penny or 1 dime, 2 nickels, 1 penny or 1 dime, 1 nickel, 6 pennies or 1 dime, 11 pennies or 4 nickels, 1 penny or 3 nickels, 6 pennies or 2 nickels, 11 pennies or 1 nickel, 16 pennies or 21 pennies.

Question 22.
There are three picture frames. Each has a mass of 0.2 kilograms. What is the total mass of the three picture frames? Use the number line. Answer: The total mass of the three picture frames is 0.6 kilograms.
Explanation: Given that,
There are three picture frames. Each has a mass of 0.2 kilograms.
Now, we will find the total mass of the three picture frames using the number line.
So, the mass of the one picture frame is 0.2 kilograms.
Then the mass of the 3 picture frame is 0.2 + 0.2 + 0.2 = 0.6 kilogram.
So, the total mass of the three picture frames is 0.6 kilograms.

Question 23.
Justin drank 1 liter of water during soccer practice. He drank 2,000 milliliters of water during the soccer game. How much water did he drink during the practice and the game?

Answer: 3000 mL water he drink during the practice and the game.
Explanation: Given that,
Justin drank 1 liter of water during soccer practice.
He drank 2,000 milliliters of water during the soccer game.
Now, we will find out how much water did he drink during the practice and the game.
So, the values are 2000 mL and 1 liter.
We know that, 1 liter = 1000 mL.
The total water he drank is 1000 mL + 2000 mL = 3000 mL.
Therefore, 3000 mL of water he drink during the practice and the game.

Question 24.
Julian walked a distance of 2 meters. Keira walked a distance of 300 centimeters. Which distance is longer?

Answer: Keira distance is longer. Because 300 centimeters keira and 200 meters is julian.
Explanation: Given that,
Julian walked a distance of 2 meters.
Keira walked a distance of 300 centimeters.
Now, we will find the longer distance person.
First convert m into cm.
We know that, 1m = 100 cm.
So, 2m = 200 centimeter.
Therefore, keria walked farther.

Test Practice

Question 25.
Henry’s water bottle has a capacity of 1 liter. What is the capacity of Henry’s water bottle in milliliters?
(A) 1 milliliter
(B) 10 milliliters
(C) 100 milliliters
(D) 1,000 milliliters

Explanation: Given that,
Henry’s water bottle has a capacity of 1 liter.
Now, we will find the capacity of Henry’s water bottle in milliliters.
Based on the given option, the option D is correct.
We know that, 1 liter = 1000 milliliter.
So, the option D is correct.

Reflect

Use what you learned about metric measurements to complete the graphic organizer.  