Decimal Place Value
Read this decimal: 3.8
three and eight tenths
Is the following written in scientific notation? If not, explain why.
3.25 + 107
No, this number is not written in scientific notation. It should be 3.25 x 107 .
What is 12% of 80?
9.6
35.487 x 104
354,870
Solve the expression (3.7 x 109) + (4.04x 109)
7.74 x 109
Read this decimal: 659.24
six hundred fifty-nine and twenty-four hundredths
Convert to standard notation: 4.7 x 104
47,000
What percent of 20 is 8?
40%
87.8 x 10-3
0.0878
Solve (4.5 x 104) - (1.75 x 104)
2.75 x 104
Write this decimal: fifty-four and fifty-nine thousandths
54.059
Convert to scientific notation: 93,000,000
9.3 x 107
35 is 20% if what number?
175
7.5135 x 103
7513.5
Solve the expression (7 x 105) - (5.2 x 104)
6.48 x 105
Write this decimal: two thousand seven hundred and three hundred fourteen thousandths
2700.314
Convert to scientific notation: 0.00000302
3.02 x 10-6
23% of 75 is what number?
17.25
0.0034 x 10-5
0.000000034
Solve (2 x 103) - (4 x 102)
1.6 x 103
Write this decimal: sixty-one and three hundredths
61.03
The size of four oceans in square km is shown below. List the oceans from smallest to largest. Pacific Ocean: 1.796 x 108, Artic Ocean: 1.323 x 107, Atlantic Ocean: 1.061 x 108, Indian Ocean: 7.498 x 107
Artic Ocean, Indian Ocean, Atlantic Ocean, and Pacific Ocean
There are 36 carpenters in a crew. On a certain day, 29 were present. What percent showed up for work? (round to the nearest tenth)
81%
0.74 x 106
740,000
A computer's hard disk drive holds 8.0 x 107 bytes of information. If Jaden buys another memory stick that holds 3.0 x 106 bytes of information, how much memory will the computer hold all together?
A. 11.0 x 1013 B. 11.0 x 107
C. 8.3 x 1013 D. 8.3 x 107
D