Significant Digits and Scientific Notation
Part 1: Determine the number of significant digits in each number and write out the specific significant digits.
1. 405000 = 3 significant digits – 4,0,5
2. 0.0098 = 2 significant digits – 9,8
3. 39.999999 = 8 significant digits – 3,9,9,9,9,9,9,9
4. 13.00 = 4 significant digits – 1,3,0,0
5. 80,000,089 = 8 significant digits – 8,0,0,0,0,0,8,9
6. 55,430.00 = 7 significant digits – 5,5,4,3,0,0,0
7. 0.000033 = 2 significant digits – 3,3
8. 620.03080 = 8 significant digits – 6,2,0,0,3,0,8,0
Part 2: Write the numbers below in scientific notation, incorporating what you know about significant digits.
1. 70,000,000,000 = 7 x 10^10
2. 0.000000048 = 4.8 x 10^-8
3. 67,890,000 = 678.9 x 10^5
4. 70,500 = 70.5 x 10^3
5. 450,900,800 = 450900.8 x 10^3
6. 0.009045 = 904.5 x 10^-5
7. 0.023 = 2.3 x 10^-2
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