Review Questions 1
What is 0.000163 written in scientific notation?
1.63 x 10 ^ -4
A jumbo bean stalk grew 36 inches in 2 days. At that rate, how much would the stalk grow in 2 weeks?
21 ft
Which is 0.00595 written in scientific notation?
5.95 x 10^3
A jumbo bean stalk grew 70 inches in 5 days. At that rate, how much would the stalk grow in 3 weeks?
24 ft 6 in.
Circle X has a radius of Pi (3.14). Circle Y has a circumference of 8 Pi. Circle Z has an area of 9 Pi. List the circles in order from smallest to largest radius.
The order from smallest to largest radius is Z, X, Y.
What is an equivalent value for 10 ^ –3 ?
10 ^ –3 = 1/1000 = 0.001
Simplify: 9 / 3 x 3 + 5 - 2
12
What is an equivalent value for 10^–4 ?
10^–4 = 1/10,000 = 0.0001
Simplify: 9 / 3 x 3 + 6 - 2
13
What is the product of 3/2 x 4/3 x 5/4 x . . . x 2006/2005 ?
2006/2 = 1003. And that is the answer.
Simplify: 4 yd 1 ft 2 in.
- 10 in.
_________________________
4 yd 4 in.
On the north pole of Uranus winter lasts about 504 months. Which shows the measurement in scientific notation?
5.04 x10^2
4 yd 1 ft 1 in.
- 11 in.
________________
4 yd 2 in.
Jupiter’s equatorial diameter is about 53,000 kilometers. Which shows the measurement in scientific notation?
5.3x10^4
How many two-digit numbers have digits whose sum is a perfect square?
The answer is 1+4+9+3 = 17.
After taking 3 quizzes, your average is 79 out of 100. What must your average be on the next five quizzes to increase your average to 84?
87
Convert 9.6 tons to pounds.
19,200 lb
After taking 7 quizzes, your average is 78 out of 100. What must your average be on the next five quizzes to increase your average to 83?
90
Convert 5200 pounds to tons.
2.6 tons
Antonette gets 70% on a 10-problem test, 80% on a 20-problem test and 90% on a 30-problem test. If the three tests are combined into one 60-problem test, which percent is closest to her overall score?
83
The ratio of employees to computers in a certain company is 8 to 3. If there are 40 employees in the company, how many computers are there?
15
Simplify: 4 hr 9 min 31 sec
+ 5 hr 21 min 13 sec
____________________________
9 hr 30 min 44 sec
The ratio of employees to computers in a certain company is 10 to 4. If there are 16 computers in the company, how many employees are there?
40
Simplify: 11 hr 21 min 41 sec
+ 6 hr 27 min 52 sec
__________________________
17 hr 49 min 33 sec
Cassie leaves Escanaba at 8:30 AM heading for Marquette on her bike. She bikes at a uniform rate of 12 miles per hour. Brian leaves Marquette at 9:00 AM heading for Escanaba on his bike. He bikes at a uniform rate of 16 miles per hour. They both bike on the same 62-mile route between Escanaba and Marquette. At what time in the morning do they meet?
11:00 AM