Adding Rational Numbers

​Adding Rational Numbers

Module 3 Section 2​

Some text here about the topic of discussion

Multiple Choice

Mixed Review: Write in decimal form: $$\frac{1}{2}$$  

•  0.12

• 0.5

• 0.21

• 2

Multiple Choice

Mixed Review: Write as a fraction: 0.4

• $$\frac{4}{5}$$  

• $$\frac{2}{5}$$  

• $$\frac{4}{100}$$  

• $$\frac{1}{4}$$  

Multiple Select

Preview: Evaluate (Select all correct answers): $$3.6\ +\left(-2\right)+\frac{1}{2}$$   

• $$2.1$$  

• $$1.8$$  

• $$2\frac{1}{10}$$  

• $$\frac{9}{5}$$  

1. Create a common denominator.

2. Add numerators​.

3. Keep common denominator.​

​Steps: Fractions

1. Put all rational numbers in the same form.

2. If they are expressed as integers or decimals, line up decimal points and add.​

​Steps: Integers & Decimals

​Notes: Adding Rational Numbers

Some text here about the topic of discussion

​See how the decimals are lined up so that the corresponding place values can be added.

​

​Some text here about the topic of discussion.

​Example 1:

​

To get a common denominator it helps to find the LCM of the denominators.​

​Some text here about the topic of discussion.

​Example 2:

​

Multiple Choice

Evaluate: $$-12.1+9.2+4=?$$  

• 1.1

• -1.1

• 25.3

• -25.3

Multiple Choice

Evaluate: $$\frac{1}{3}+\frac{6}{7}=?$$  

• $$\frac{7}{10}$$  

• $$\frac{2}{7}$$  

• $$\frac{7}{18}$$  

• $$\frac{25}{21}$$  

Multiple Choice

Evaluate: $$\frac{1}{2}+5.3+\left(-4\right)=?$$  

• 1.8

• -1.8

• -10.8

• 10.8

Open Ended

Explain what we did in class today in exactly 7 words.