Understanding Multiplication in Word Problems

The video tutorial introduces multiplication word problems, emphasizing the importance of identifying keywords like 'equal groups' and 'times' to determine when to use multiplication. It provides four examples: buying uniforms for stores, purchasing books in boxes, calculating a construction worker's earnings, and selling gerbils in a pet store. Each example demonstrates how to apply multiplication to solve real-life problems, highlighting the concept of equal groups. The tutorial also briefly introduces the distributive property as a method to simplify multiplication.

What is a key indicator that multiplication should be used in a word problem?

• The presence of the word 'subtract'

• The presence of equal groups or rows

• The presence of the word 'divide'

• The presence of the word 'add'

Which of the following is NOT a keyword indicating multiplication in word problems?

• Minus

• Per

• Times

• Equal groups

In the problem about the store owner, how many uniforms are needed in total if each store requires 8 uniforms and there are 3 stores?

• 40 uniforms

• 32 uniforms

• 24 uniforms

• 16 uniforms

How many books did John buy if he purchased 2 boxes with 5 books each?

• 20 books

• 15 books

• 10 books

• 5 books

If a construction worker earns $8 per hour and works 8 hours, how much does he earn in total?

• $48

• $72

• $64

• $56

What mathematical property is demonstrated when splitting 8 hours into two groups of 4 hours each to calculate earnings?

• Associative Property

• Distributive Property

• Commutative Property

• Identity Property

What is the total number of hours worked by the construction worker in the example?

• 7 hours

• 6 hours

• 8 hours

• 9 hours

How much money does the pet store make if they sell 5 gerbils at $8 each?

• $30

• $35

• $40

• $45

In the gerbil problem, what does each gerbil represent in terms of multiplication?

• A variable

• An equal group of $8

• A single unit

• An unequal group

In the context of the video, what is the main purpose of identifying equal groups in word problems?

• To add numbers

• To subtract numbers

• To divide numbers

• To multiply numbers