Significant Figures with Rounding and Scientific Notation

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

How many significant figures does the following number have: 0.998005

• 9
• 10
• 6
• 5

How many significant figures does the following number have: 100.00210

• 7
• 5
• 10
• 8

How many significant figures does the following number have: 100.3

• 4
• 3
• 5
• 2

How many significant figures does the following number have: 56.040

• 2
• 3
• 4
• 5

How many significant figures does the following number have: 53.5

• 3
• 4
• 6
• 8

How many significant figures does 1.90 × 10⁸ have?

• 3

• 4

• 6

• 8

Round 0.010229 to four sig figs

• 1.022 x 10 ^-2

• 1023

• 0.01023

• 0.01022

Round 1009 to three sig figs

• 100
• 101
• 1010
• 1000

Round 1047.78 to three sig figs

• 1.50 x 10 ²

• 105

• 1050

• 1050.00