# McGraw Hill My Math Grade 5 Chapter 5 Lesson 9 Answer Key Subtract Decimals Using Models

All the solutions provided inÂ McGraw Hill My Math Grade 5 Answer Key PDF Chapter 5 Lesson 9 Subtract Decimals Using Models will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 5 Answer Key Chapter 5 Lesson 9 Subtract Decimals Using Models

Build It

Find 2.4 – 1.07. Use models.

1. Use 10-by-10 grids to model 2.4.
To show 2.4, shade two whole grids and four tenths of a third grid.
Four tenths is equal to _____________ small squares.
Four-tenths is equal to 40 small squares.

2. Subtract 1.07.
To subtract 1.07, cross out 1 whole grid and 7 hundredths of the third grid.

3. Count the remaining shaded squares.
How many ones are there? _____________
There are one ones.
How many tenths are there? _____________
There are three-tenths.
How many hundredths are there? _____________
There are three hundredths.
So, 2.4 – 1.07 = 1.33.
1.07 + _____________ = 2.4
1.07+1.33 = 2.4.

Explanation:

Try It

Find 1.66 – 0.84. Use models.

1. Model 1.66.
To show 1.66, shade one grid and sixty-six hundredths of a second grid.
Sixty-six hundredths is equal to 66 small squares.

Sixty-six hundredths is equal to 66 small squares.
2. Subtract 0.84.
To subtract 0.84, cross out 4 hundredths and 8 tenths.

3. Count the remaining shaded squares.
How many ones are there? _____________
There are zero ones.
How many tenths are there? _____________
There are eight-tenths.
How many hundredths are there? _____________
There are 2 hundredths.
So, 1.66 – 0.84 = 0.82.
0.84 + _____________ = 1.66
0.84 + 0.82 = 1.66.

Explanation:

Question 1.
Mathematical PRACTICE Use Math Tools Explain how using models to find 2.4 – 1.07 is similar to using models to find 240 – 107.
When we are using models to find the difference between the given numbers 2.4 and 1.07, we have to use model and take away the same number of squares as finding the difference between 240 and 107 using models.

Practice It

Subtract. Use decimal models.

Question 2.
0.93 – 0.7 = ____________

0.93 – 0.7 = 0.23.

Explanation:
Given,
0.93 – 0.7
The subtraction for the given two numbers is 0.23.

Question 3.
1.53 – 1.41 = _____________

1.53 – 1.41 = 0.12.

Explanation:
Given the equation is 1.53 – 1.41 which is 0.12.
The subtraction for the given two numbers is 0.12

Question 4.
0.9 – 0.3 = ______________

0.9 – 0.3 = 0.6.

Explanation:
Given the equation is 0.9 – 0.3 which is 0.6.
The subtraction for the given two numbers is 0.6

Question 5.
3.94 – 0.4 = _______________

3.94 – 0.4 = 3.54.

Explanation:
Given the equation is 3.94 – 0.4 which is 3.54.
The subtraction for the given two decimal numbers is 3.54.

Question 6.
3.55 – 0.1 = _______________

3.55 – 0.1 = 3.45.

Explanation:
Given the equation is 3.55 – 0.1 which is 3.45.
The subtraction for the given two decimal numbers is 3.45.

Question 7.
2.4 – 0.9 = ________________

2.4 – 0.9 = 1.5.

Explanation:
Given the equation is 2.4 – 0.9 which is 1.5.
The subtraction for the given two decimal numbers is 3.45.

### McGraw Hill My Math Grade 5 Chapter 5 Lesson 9 My Homework Answer Key

Practice

Subtract. Use decimal models.

Question 1.
3.8 – 2.3 = ___________

3.8 – 2.3 = 1.5.

Explanation:
Given the equation is 3.8 – 2.3 which is 1.5.
The subtraction for the given two decimal numbers is 1.5.

Question 2.
2.13 – 1.7 = ____________

2.13 – 1.7 = 0.43.

Explanation:
Given the equation is 2.13 – 1.7 which is 0.43.
The subtraction for the given two decimal numbers is 1.5.

Problem Solving

Question 3.
Bridget is reviewing a nutrition label. She wants to find the difference between the amount of grams of saturated fat and protein. How many more grams are there of saturated fat than protein? Draw decimal models to find the difference.

The saturated fat is 0.59 grams more than protein.

Explanation:
Given,
the amount of grams of saturated fat is 1.08 grams and protein is 0.49 grams.
So the difference between saturated fat and protein is 1.08-0.49 which is 0.59 grams.

Question 4.
Mathematical PRACTICE Use Math Tools Leanne is building a model tower that needs to be 1.42 meters tall. The model currently is only 0.68 meter tall. How many more meters does she need to build in order to finish the model tower? Draw decimal models to find the difference.