(+)
Add:
(4.5 x 107) + (5.0 x 107) =
4.5 x 107 + 5.0 x 107 = 9.5 x 107
Convert to scientific notation
789
7.89 x 102
Subtract
(24 x 103)- (11 x 103)
(24 x 103)- (11 x 103)
13 x 103
1.3 x 104
Convert to standard notation
7.5 x 104
75,000
Solve:
(6.0 x 103) + (7.0 x 105) =
7.06 x 105
Convert to scientific notation
13.4 x 103
1.34 x 104
Solve
27 x 102 - 11 x 102
27 x 102 - 11 x 102
16 x 102
1.6 x 103
Convert to standard notation
7.4 x 101
74
There are 9 x 104 blades of grass in my backyard. There are also 7 x 105 blades of grass in my front yard. How many total blades of grass are in my yards?
9 x 104 + 7 x 105
7 x 101 x 104 + 9 x 104
70 + 9 x 104
79 x 104
7.9 x 105
Convert to scientific notation
4.3
4.3
4.3 x 100
Subtract
.00016 - .00007
.00016 - .00007
1.6 x 10-4 - 7.0 x 10-5
1.6 x 10-4 - 7.0 x 10-1 x 10-4
1.6 x 10-4 - .7 x 10-4
0.9 x 10-4
9.0 x 10-3
Convert to standard notation
211.00 x 103
211,000
My medium-sized dog, Trooper, has 15 x 107 muscles in his tail. Ms. Santosdiaz's dog, Louie, has 5 x 104 muscles in his tail. How many total muscles are in both dogs tails?
15 x 107 + 5 x 104
1.5 x 108 + 5 x 104
1.5 x 104 x 104
15,000 x 104 + 5 x 104
15,005 x 104
1.5005 x 108
Convert to scientific notation
0.00078
7.8 x 10-4
Mars is 1.4 x 1011 mi from the sun. Earth is 9.2 x 109 mi from the sun. What is the difference between Mars and earth?
1.4 x 1011 - 9.2 x 109
1.4 x 102 x 109 - 9.2 x 109
140 x 109 - 9.2 x 109
130.8 x 109
1.308 x 1011
Convert to standard notation
8.45 x 10-3
.00845
There are 3.5 x 108 seats at Azteca Stadium in Mexico City. At Camp Nou in Barcelona, there are 40.0 x 107 seats. Which stadium is bigger and what is the size difference?
Camp Nou is bigger because
40.0 x 107 - 3.5 x 108
40.0 x 107 - 3.5 x 101 x 107
40.0 x 107 - 35 x 107
5 x 107