Lesson 1-3
(-4.3) x … x (-4.3) =
_______________
8 times
(-4.38)8
(57 / 57) x 80
1
What is the smallest power of 10 that would exceed 987,654,321?
109
The speed of Supersonic is 3 x 107 meters per second. Alaska is approximately 220,000,000,000 meters from South Africa. How many seconds would it take for Supersonic to reach South Africa from Alaska?
About 7300 seconds.
Will the product of this: (-56)56 be positive or negative?
Positive (even exponents = positive product) (odd exponents = negative product)
How are 90 and 19 the same? How are they different from 9-1 ?
They both have a product of 1. The second answer should be 1/9.
Mary said that 0.08 was a bigger number than 0.1. Is she right? Explain why or why not.
She is wrong - accept number line or power of 10 response.
Solve:
(1.672622 x 10-27) / (9.10938291 x 10-31) =
About 1,836
65 x 49 x 43 x 614 =
619 x 412
347 x 36281-1
347 / 36281
The population of Milwaukee is 569,330. Write it in scientific notation.
5.69330 x 105
EXAMPLE ON BOARD:
Name your unit, explain why you chose it, and rewrite each new measurement.
ANSWER ON THE BOARD.
53 / 25
5
Will this answer be positive or negative (-6) x (4)? Will this answer be positive or negative (-5) x (-2)?
Negative. Positive.
The population of Milwaukee is 569,330. The population of Wisconsin is 5,896,000. How many times greater is the population of Wisconsin compared to the population of Milwaukee?
About 10.35 times greater.
Compare 2.2 x 10-16 and 7.05 x 10-11. Which number is smaller?
2.2 x 10-16
(1275 x 21 x 352)4 =
12720 x 214 x 358
Show directly that for any nonzero integer x, (x-4)-3 = x12
SHOW WORK ON BOARD.
Let’s assume the amount of red volcanic rock in Venus has an approximate surface area of 251,000,000 km2, and the amount of black volcanic rock in Venus has an approximate surface area of 3 x 106 km2. How much of Venus' surface is covered by both kinds of volcanic rock?
254 x 106 or 254,000,000
The mass of the moon is 7.3 x 1022, and the mass of the Earth is 5.9 x 1024. What is the difference in mass between both?
5.827 x 1024