Mastering Multi-Step Rational Number Problems

The video tutorial covers solving multi-step problems with rational numbers, emphasizing the importance of understanding keywords indicating positives or negatives, and applying rules for arithmetic operations. It includes practical examples such as calculating Brianna's bonus after customer complaints, Julian's weekly exercise mileage, and Olivia's shopping budget for phone cases. The tutorial concludes with a review of problem-solving tips, focusing on the order of operations and arithmetic rules.

Which of the following is NOT a tip for solving problems with rational numbers?

• Pay attention to keywords indicating positives or negatives.

• Use order of operations when necessary.

• Always use a calculator for all operations.

• Remember rules for adding, subtracting, multiplying, and dividing.

If Brianna's yearly bonus is $155 and $2.50 is deducted for each complaint, how much is deducted for 12 complaints?

• $15

• $20

• $25

• $30

What is Brianna's final bonus after 12 complaints?

• $135

• $115

• $125

• $105

Julian ran 4.4 miles per day for 4 days. How many miles did he run in total?

• 17.6 miles

• 16.4 miles

• 18.8 miles

• 19.2 miles

Julian walked 1.75 miles per day for 6 days. How many miles did he walk in total?

• 10.5 miles

• 9.5 miles

• 12.5 miles

• 11.5 miles

What is the total number of miles Julian ran and walked last week?

• 28.1 miles

• 26.1 miles

• 27.1 miles

• 25.1 miles

Olivia has $650 and buys a laptop for $399.99. How much money does she have left?

• $100.01

• $150.01

• $200.01

• $250.01

Olivia buys two pairs of headphones for $39.99 each. How much does she spend on headphones?

• $69.98

• $59.98

• $79.98

• $89.98

After buying a laptop, headphones, and a speaker, how much money does Olivia have left?

• $29.08

• $19.08

• $49.08

• $39.08

How many phone cases can Olivia buy with her remaining money if each costs $8.25?

• 4

• 3

• 2

• 1