Write in Expanded Form Using Power of 10s
305
(3×10^2) + (5×10^0)
Find the square root of 9
3
A square park has an area of 49 m². How long is one side?
7 m
The distance from Earth to Mars is about 4.25×10^4 km, and the distance from Earth to Venus is about 4.1×10^5 km. How much farther is Mars from Earth than Venus is from Earth?
Calculator allowed.
Venus is 367,500 km farther from Earth than Mars
4562
(4×10^3)+(5×10^2)+(6×10^1)+(2×10^0)
Find the square root of 81
9
Which number best represents the size of a human cell in scientific notation? Give a one sentence explanation.
a) 8 x 10^2
b) 8 x 10^100
c) 8 x 10^-200
8 x 10^-200 because it is a really small number and human cells are microscopic (really small)
89
(8×10^1) + (9×10^0)
Find the square root of 144
12
The area of a square is 225 m². Find the side length.
15 m
7042
(7×10^3) + (4×10^1) + (2×10^0)
Free for All!!!
Estimate the square root of 40. Closest number wins.
6.3
An office building A is about 0.1×10^3 meters tall, and another office building B is about 2×10^2 meters tall. Which building is smaller? Show your work.
Building A because 100 m is smaller than 200 m
60,307
(6×10^4)+ (3×10^2) + (7×10^0)
Free for All!!
Estimate the square root of 111. Closest number wins.
10.5
A single bacterium is 2×10^-6 meters long.
If a line of 1,000 bacteria were placed end to end, how long would the line be?
0.002 meters long