Examples with solutions for Powers: Simple exercise

Exercise #1

Write the following as an integer:

83= 8^3=

Video Solution

Step-by-Step Solution

To solve this problem, we need to calculate the value of 83 8^3 .

Let's work through the calculation step-by-step:

  • First, calculate 8×8 8 \times 8 . This gives: 8×8=64 8 \times 8 = 64 .
  • Next, we multiply the result by 8 again: 64×8=512 64 \times 8 = 512 .

Therefore, the value of 83 8^3 is 512.

Answer

512

Exercise #2

Write the following as an integer:

65= 6^5=

Video Solution

Step-by-Step Solution

To solve the problem of finding 656^5 and expressing it as an integer, we need to carry out the multiplication of 66 by itself five times. Here is the step-by-step calculation:

  • Step 1: Multiply 6×66 \times 6 which equals 3636.
  • Step 2: Multiply 36×636 \times 6 which results in 216216.
  • Step 3: Multiply 216×6216 \times 6 obtaining 12961296.
  • Step 4: Multiply 1296×61296 \times 6 to get 77767776.

By following these calculations, we find that 65=77766^5 = 7776.

Thus, the integer representation of 656^5 is 77767776.

Answer

7776

Exercise #3

Write the following as an integer:

44= 4^4=

Video Solution

Step-by-Step Solution

To solve the problem of determining 444^4, we follow a straightforward calculation of powers:

Step 1: Understand the expression 444^4 which means 44 multiplied by itself 4 times.

Step 2: Calculate:

  • First multiplication: 4×4=164 \times 4 = 16.
  • Second multiplication: 16×4=6416 \times 4 = 64.
  • Third multiplication: 64×4=25664 \times 4 = 256.

Thus, 444^4 results in an integer value of 256.

Therefore, the solution to the problem is 256 256 .

Answer

256

Exercise #4

Write the following as an integer:

72= 7^2=

Video Solution

Step-by-Step Solution

To solve this problem, we need to evaluate the expression 727^2. This expression means 77 multiplied by itself, due to the exponent 22.

  • Step 1: Identify the base and exponent — here the base is 77 and the exponent is 22.
  • Step 2: Apply the definition of exponents: calculate 7×77 \times 7.

Now, let's perform the calculation:

7×7=497 \times 7 = 49.

Therefore, the integer value of 727^2 is 49\textbf{49}.

Answer

49

Exercise #5

Check the correct answer:

53= 5^3=

Video Solution

Step-by-Step Solution

To solve the problem of finding 53 5^3 , we will proceed as follows:

  • Step 1: Identify that 53 5^3 means 5 5 raised to the power of 3, which is equivalent to multiplying 5 by itself 3 times.
  • Step 2: Compute the expression: 53=5×5×5 5^3 = 5 \times 5 \times 5 .
  • Step 3: Perform the multiplication in two stages for clarity:
    • First, calculate 5×5=25 5 \times 5 = 25 .
    • Next, take the result from the first calculation and multiply by 5 again: 25×5=125 25 \times 5 = 125 .

Therefore, the value of 53 5^3 is 125.

This matches with one of the provided choices, which is 125.

Answer

125

Exercise #6

Write the following as an integer:

163= 16^3=

Video Solution

Step-by-Step Solution

To solve this problem, we will compute 163 16^3 by performing the following steps:

  • First, calculate the square of 16: 16×16=256 16 \times 16 = 256 .
  • Next, use the result to find 163 16^3 : 256×16=4096 256 \times 16 = 4096 .

Therefore, the value of 163 16^3 is 4096 4096 .

Answer

4096

Exercise #7

Write the following as an integer:

125= 12^5=

Video Solution

Step-by-Step Solution

To solve this problem, we'll perform repeated multiplication to find 125 12^5 , as follows:

  • Step 1: Compute 122=12×12=144 12^2 = 12 \times 12 = 144 .

  • Step 2: Compute 123=144×12=1728 12^3 = 144 \times 12 = 1728 .

  • Step 3: Compute 124=1728×12=20736 12^4 = 1728 \times 12 = 20736 .

  • Step 4: Finally, compute 125=20736×12=248832 12^5 = 20736 \times 12 = 248832 .

Through these calculations, we determined that the value of 125 12^5 is 248832 248832 .

Therefore, the solution to the problem is 248832 248832 and this corresponds to choice 3.

Answer

248832

Exercise #8

Write the following as an integer:

134= 13^4=

Video Solution

Step-by-Step Solution

To solve this problem, we will perform step-by-step calculations to find 134 13^4 :

  • Step 1: Calculate 132 13^2 . We have 13×13=169 13 \times 13 = 169 .
  • Step 2: Calculate 133 13^3 using the result from Step 1. We multiply 169×13 169 \times 13 . Performing the multiplication:
    169×13=169×(10+3)=169×10+169×3=1690+507=2197 169 \times 13 = 169 \times (10 + 3) = 169 \times 10 + 169 \times 3 = 1690 + 507 = 2197 .
  • Step 3: Calculate 134 13^4 using the result from Step 2. Multiply 2197×13 2197 \times 13 . Performing the multiplication:
    2197×13=2197×(10+3)=2197×10+2197×3=21970+6591=28561 2197 \times 13 = 2197 \times (10 + 3) = 2197 \times 10 + 2197 \times 3 = 21970 + 6591 = 28561 .

Therefore, the value of 134 13^4 is 28561, which corresponds to choice (2).

Answer

28561

Exercise #9

Write the following as an integer:

113= 11^3=

Video Solution

Step-by-Step Solution

To solve this problem, we'll multiply as follows:

  • Step 1: Compute 11×11=12111 \times 11 = 121.

  • Step 2: Take the result from Step 1 and multiply it by 11 again: 121×11121 \times 11.

Let's perform the multiplication for Step 2:

To calculate 121×11121 \times 11, we can use a standard multiplication method:

  • 121
    ×11
    ----

  • From the rightmost digit: 1×1=11 \times 1 = 1.

  • Next: 1×2=21 \times 2 = 2. Add the carried over part (none here, so just 2).

  • Finally: 1×1=11 \times 1 = 1.

Thus, the basic multiplication gives us 121. Now multiply by 10 (shift left):

  • Shifted 121 becomes 1210 (since it represents 121×10121 \times 10).

  • Add these values:
    121
    +1210
    -----
    1331

Therefore, the solution to 11311^3 is 1331.

Answer

1331

Exercise #10

Write the following as an integer:

103= 10^3=

Video Solution

Step-by-Step Solution

To solve the problem of finding 103 10^3 , let us apply the rules of exponents:

  • Step 1: Recognize that 103 10^3 means the base 10 is multiplied by itself three times.
  • Step 2: Write out this multiplication: 10×10×10 10 \times 10 \times 10 .
  • Step 3: Calculate the result step by step.
    First, calculate 10×10=100 10 \times 10 = 100 .
    Next, multiply the result by 10: 100×10=1000 100 \times 10 = 1000 .

Therefore, the expression 103 10^3 evaluates to 1000.

Thus, the solution to this problem is 1000 1000 , which corresponds to choice 4.

Answer

1000