Questions and Answers
What is the result of $(3 imes 15) + (17 imes 15)$?
What is the calculation for $50 imes (64 + 36)$?
5,000
What is $(1200 - 700) / 5$?
100
What is the result of $10 imes (250 + 45)$?
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What is $(560 + 440) imes 14$?
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Is $100 imes 8 < 25 imes (4 imes 9)$?
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Is $48 imes 12 > 50 imes 12 - 3 imes 12$?
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Is $24 imes 36$ equal to $18$ twenty-fours, doubled?
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What is the result of $25 imes 30$?
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What is the result of $2.5 imes 30$?
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What is $514 imes 33$?
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How much did the school spend in total?
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Study Notes
Mathematical Expressions and Comparisons
- The expression (3 x 15) + (17 x 15) evaluates to 300, representing the total of three groups of fifteen and seventeen groups of fifteen.
- Calculating 50 x (64 + 36) yields 5,000, emphasizing the significance of order of operations in multiplication and addition.
- The operation (1,200 - 700) / 5 results in 100, illustrating the process of subtracting two numbers then dividing the difference.
- 10 x (250 + 45) equals 2,950, showing multiplication of ten with the total of two added numbers.
Summation and Multiplication
- The calculation (560 + 440) x 14 results in 14,000, showcasing the importance of summing values before scaling them.
- The expression 100 x 8 is compared to 25 x (4 x 9) to demonstrate inequality, revealing that 100 x 8 is less than the product of the other expression.
- The inequality 48 twelves > 50 twelves - 3 twelves clarifies that 48 multiplied by 12 is greater than 50 groups of twelve reduced by 3 groups of twelve.
Comparisons and Equivalents
- The statement 24 x 36 = 18 twenty-fours, doubled illustrates a connection between multiplication and comparative ratios, emphasizing how multiplication can be reframed in terms of multiples.
Simple Multiplication Facts
- The multiplication of 25 x 30 results in 750, a straightforward arithmetic fact.
- 2.5 x 30 yields 75, providing a basic multiplication example.
- The product of 514 x 33 equates to 16,962, demonstrating application in larger multiplication operations.
Real-World Application
- For a school field trip, 47 sandwiches at $4.60 each and 39 bags of chips at $1.25 each total $264.95, providing an example of budgeting and cost calculation in context.
Studying That Suits You
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Description
Test your arithmetic skills with these flashcards from Mid-Model 2. Each card challenges you with equations that involve addition, multiplication, and division. Perfect for reinforcing basic mathematical concepts and improving your problem-solving abilities.
