What is multiplication?
Expressions Unit 2 Review: Multiplying Multi-Digit Numbers

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Mathematics
•
4th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 4 multiplied by 3 (4 x 3) means adding 4 three times (4 + 4 + 4 = 12).
2.
FLASHCARD QUESTION
Front
How do you multiply multi-digit numbers?
Back
To multiply multi-digit numbers, you can use the standard algorithm: multiply each digit of the bottom number by each digit of the top number, starting from the rightmost digit, and then add the results together.
3.
FLASHCARD QUESTION
Front
What is the product of 28 and 90?
Back
The product of 28 and 90 is 2,520.
4.
FLASHCARD QUESTION
Front
If a bus tour costs $52 per person, how do you find the total cost for a group?
Back
To find the total cost for a group, multiply the cost per person by the number of people. For example, $52 x 8 people = $416.
5.
FLASHCARD QUESTION
Front
What is the total volunteer hours if 241 boys and 302 girls each volunteer for 7 hours?
Back
Total volunteer hours = (241 + 302) x 7 = 3,801 hours.
6.
FLASHCARD QUESTION
Front
What does the equation 50 x 90 = (5 x 10) x ( _ x 10) represent?
Back
This equation shows how to break down multiplication into smaller parts. The blank represents 9, so 50 x 90 = (5 x 10) x (9 x 10).
7.
FLASHCARD QUESTION
Front
How do you calculate the total money made from selling books?
Back
To calculate the total money made, multiply the price of each book by the number of books sold. For example, $3 x 232 books = $696.
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