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Extensions |
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| What number makes each statement true? |
| 31.
0.4 = ____ hundredths |
32.
0.07 = ____ thousandths |
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Copy and complete. Write >, <, or = for each  . |
33.
2.015
2.105
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34. 6.159 5.159 |
35. 7.010 7.01 |
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| 36. What
is the standard form for 6 + 0.1 + 0.03
+ 0.005? |
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A.
0.6135 |
B.
6.135 |
C.
61.35 |
D.
6,135 |
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Enrichment |
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| Powers of Ten |
Numbers can be written in a shorter form with exponents.
One thousand is a power of ten because it can be written
as 10 with an exponent. The exponent is 3 because you
multiply 3 factors of 10 to get 1,000.
Similarly, 100,000 = 10 x 10 x 10 x 10 x 10 = 10 5. |
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| The system we use to write numbers is based on powers of ten. |
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| The following shows 7,562,305,100 in expanded notation with exponents. |
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(7
x 109) + (5 x 108)
+ (6 x 107) + (2 x 106)
+ (3 x 105) +
(5 x 103) + (1 x 102) |
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| Write each number in expanded notation with exponents. |
| 1.
3,529 |
2. 854,207,340 |
3. 621,460,872,000 |
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All text pages available online and on CD-ROM. |
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