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Simplify fractions, powers, roots and sequences: retrieval

Simplify fractions, powers, roots and sequences: retrieval: a separate sample with explanations after your response.

Paper packet. Every task here also exists on screen, where it is checked automatically; answers written on paper are not assessed by Nydus. When you are back at a device, enter your answers there.

1. What you will learn

Simplify fractions, powers, roots and sequences: retrieval: attempt the fractions powers sample without worked examples. Use the target of each question to decide which information matters, and record your initial response before reading its explanation.

2. Practice

What is (3 times 10 to the fifth power) divided by (6 times 10 to the second power)?

• 500
• 1000
• 250
• 501
• 499

3. Practice

A measurement is 0.000072 meters. If it is written as a times 10 to the power -5, what is a?

• 36/5
• 72/5
• 18/5
• 41/5
• 31/5

4. Practice

What is the positive square root of 0.0081?

• 9/100
• 9/50
• 9/200
• 109/100
• -91/100

5. Practice

If 2 to the power x equals 32, what is 4 to the power (x-1)?

• 256
• 512
• 128
• 257
• 255

6. What you can do now

Review the fractions powers decisions in this arithmetic sample. Identify the particular restriction or evidence that changed your answer, and return to the corresponding worked lesson before trying a new case.