Adding Decimals Review

Adding & Subtracting Fractions and Decimals

By the end of this lesson you will be able to...

• Fractions:

  • Identify the numerator and the denominator in a fraction

  • Add fractions with both like and unlike fractions

  • Subtract fractions with both like and unlike fractions

• Add and Subtract Decimals

Vocabulary

1. Numerator

2. Denominator

3. Improper Fraction

4. Mixed Number

5. Simplify

Like Fractions

Unlike Fractions

Changing Unlike to Like denominator

Multiple Choice

What is the least common denominator of 

$$\frac{1}{4}$$  and  $$\frac{2}{5}$$  

• 5

• 25

• 10

• 20

Multiple Choice

What is the least common denominator of  $$\frac{6}{8}$$  and  $$\frac{4}{12}$$   

• 12

• 24

• 8

• 16

We DO

Changing Unlike to Like Denominators

WeDo....

Once you find the common denominator add the fractions together

Multiple Choice

$$\frac{2}{6}+\frac{1}{2}$$  

• 5/6

• 3/6

• 4/6

• 3/8

Multiple Choice

$$\frac{9}{10}-\frac{3}{4}$$  

• 5/7

• 3/20

• 3/8 

• 9/10

Challenge - apply your knowledge....

Multiple Choice

Blake had 2/3 of a cake left after his birthday party. His sister, Bethany, ate 1/6 of the leftover cake. How much cake is left?

• 1/6

• 1/9

• 3/5

• 1/2

Multiple Choice

Jessica rode her bike $$8\ \frac{5}{9}$$   miles last week and $$5\ \frac{1}{3}$$  miles this week. How many miles did Jessica ride last week and this week combined?

• $$13\ \frac{1}{2}$$  

• $$13\ \frac{8}{9}$$  

• $$3\ \frac{2}{9}$$  

• $$12\ \frac{5}{9}$$  

Adding & Subtracting Decimals

Only thing to remember ... line up the decimals

Multiple Choice

6.8 - 2.93

• 3.86

• 3.27

• 3.87

• 3.77

Multiple Choice

7.05 - 4.6 =

• 2.45
• 3.65
• 11.65
• 11.45

Multiple Choice

86.04 + 4.04

• 9.044
• 9044
• 90.08
• 90.44

Multiple Choice

22 + 4.57 + 8.9

• 34.47
• 35.47
• 13.69
• 13.59

Challenge - apply your knowledge....

Multiple Choice

Pam had $135.62 in her bank account. She deposited $58.90. How much money does she have in her account now?

• $193.52

• $194.52

• $194.53

• $76.72

Multiple Choice

Tony ran 4.8 miles. James ran 2.75 miles. How much farther did Tony run?

• 2.15 miles

• 2.05 miles

• 7.55 miles

• 7.45 miles