Sagot :
✒️NOTATIONS
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[tex] \large\underline{\mathbb{PROBLEM}:} [/tex]
A. Express the following in scientific notation
- 1) 1,250,000,000
- 2) 0.00000000456
B. Express the following in standard form
- 1) 2.253 × 10³
- 2) 6 × 10[tex]\,^{\sf\text-8} [/tex]
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[tex] \large\underline{\mathbb{ANSWERS}:} [/tex]
[tex] \qquad \Large A1) \: \rm{1.25 \times 10^9} [/tex]
[tex] \qquad \Large A2) \: \rm{4.56 \times 10^{\text-9}} [/tex]
[tex] \qquad \Large B1) \: \rm{2253} [/tex]
[tex] \qquad \Large B2) \: \rm{0.00000006} [/tex]
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[tex] \large\underline{\mathbb{SOLUTIONS}:} [/tex]
A1: 1,250,000,000
- Move the decimal point to the left. The number of hops until it reaches the first valued digit (1) will be the exponent of 10 multiplied to the changed number.
A2: 0.00000000456
- Move the decimal point to the right. The negative number of hops until it reaches the first valued digit (4) will be the exponent of 10 multiplied to the changed number.
B1: 2.253 × 10³
- The exponent of 10 is positive. Move the decimal point to the right in which the value of the exponent will be the number of hops.
B2: 6 × 10 [tex]\! ^{\bold{\text-8}} [/tex]
- The exponent of 10 is negative. Move the decimal point to the left in which the value of the exponent will be the number of hops.
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(ノ^_^)ノ
✒️[tex]\large \bold{QUESTION} [/tex]
A Express the following in scientific notation
- 1. 250.000.000
- 2. 0.00000000456
B. Express the following in standard form
- 1. 2.253 × 10³
- 2.6 × 10⁸
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✒️[tex]\large \bold{ANSWER} [/tex]
A:
- [tex]1)1.25x {10}^{9} [/tex]
- [tex]2)4.56x {10}^{ - 9} [/tex]
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B
- [tex]1)2253[/tex]
- [tex]0.00000006[/tex]
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✒️[tex]\large \bold{EXPLANATION} [/tex]
Because Scientific Notation is to express a number as a (1 < a < 10) multiplied by a to the power of 10 so...
250.000.000 =
- 1.25 X [tex] {10}^{9} [/tex]
2.253 X 10³
- = 2.253 × 10 × 10 × 10 = 2253.
6 × [tex] {10}^{ - 8} [/tex]
- =6 ×10×10×10×10×10×10×10×10 = 0.00000006
(Scientific Notation : [tex] {10}^{ - 1} = \frac{1}{10} = 0.1)[/tex]