Backpack Weights and Basic Math Problems

This video tutorial covers Unit 6, Lesson 4, focusing on solving equations and representing situations with equations. It includes selecting equations that describe situations, solving various equations, using tape diagrams for visualization, finding products through multiplication, and calculating percentages. The lesson emphasizes understanding and applying mathematical concepts to solve real-world problems.

Karen's backpack weighs 3 pounds less than Claire's, whose backpack weighs 14 pounds. How much does Karen's backpack weigh?

• 13 pounds

• 10 pounds

• 11 pounds

• 12 pounds

If each notebook contains 60 sheets and Andre has five notebooks, how many sheets does he have in total?

• 200 sheets

• 250 sheets

• 350 sheets

• 300 sheets

What is the value of x in the equation 2x = 5?

• 2

• 2.5

• 3

• 3.5

Solve for z in the equation 6 = 1/2z.

• 10

• 11

• 12

• 13

In the equation 3 + x = 18, what is the value of x?

• 12

• 13

• 14

• 15

What is the result of multiplying 21.2 by 0.02?

• 0.0424

• 42.4

• 0.424

• 4.24

Calculate the product of 2.05 and 0.004.

• 0.0082

• 0.082

• 0.82

• 8.2

What is 25% of 60 grams?

• 10 grams

• 18 grams

• 12 grams

• 15 grams

Which of the following is equivalent to 25%?

• 1/4

• 1/5

• 1/3

• 1/2

If 25% is the same as 25 over 100, what fraction can it be simplified to?

• 1/5

• 1/3

• 1/2

• 1/4