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Questions and Answers
What is the value of 5 times 8 minus 3?
What is the value of 5 times 8 minus 3?
- 39 (correct)
- 41
- 34
- 40
What is the result of $12 imes (7 - 4)$?
What is the result of $12 imes (7 - 4)$?
- 36
- 24
- 15
- 21 (correct)
Which of the following is the closest to the value of $9 imes 13 + 7$?
Which of the following is the closest to the value of $9 imes 13 + 7$?
- 130
- 120
- 115
- 125 (correct)
What is the value of $15 imes (6 + 2) - 10$?
What is the value of $15 imes (6 + 2) - 10$?
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Study Notes
Mathematical Operations
- The value of 5 times 8 minus 3 is calculated as 5 × 8 = 40, then subtract 3, resulting in 37.
Evaluating Expressions
- The result of $12 × (7 - 4)$ is calculated as 7 - 4 = 3, then multiply 12 by 3, resulting in 36.
Estimating Values
- The value of $9 × 13 + 7$ is approximately equal to 9 × 13 = 117, plus 7, resulting in 124.
Calculating Expressions
- The value of $15 × (6 + 2) - 10$ is calculated as 6 + 2 = 8, then multiply 15 by 8, resulting in 120, finally subtract 10, resulting in 110.
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