Use the rules for multiplication by powers of 10 to calculate 20 x 100.
A) 20,000
B) 20
C) 2,000
D) 200
Answer (2)
Multiply 20 by 100.
Perform the calculation: 20 × 100 = 2000 .
The result of the multiplication is 2000.
The final answer is 2000 .
Explanation
Problem Analysis We are asked to calculate the product of 20 and 100 using the rules for multiplication by powers of 10.
Multiplication To multiply 20 by 100, we simply perform the multiplication:
20 × 100 = 2000
Final Answer Therefore, the result of multiplying 20 by 100 is 2000.
Examples
Understanding multiplication by powers of 10 is crucial in everyday calculations, especially when dealing with money or measurements. For instance, if you earn $20 per day and want to calculate your earnings over 100 days, you simply multiply $20 by 100 to find your total earnings, which would be $2000. This basic multiplication skill helps in budgeting, financial planning, and understanding proportional increases in various real-life scenarios.
The multiplication of 20 by 100 results in 2000. The answer to the question is option C, which is 2000. This can also be conceptualized by moving the decimal point in the number 20 two places to the right due to multiplying by 100.
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