Counting Sign Figs
How may sig figs in $4500
What is ambiguous unless written in scientific notation?
2, 3, or 4 possible
23.34 + 0.4 = ?
What is 233.7
2.45 × 3.2 = ?
What is 7.8 (2 sig figs)
U.S. population = 3.3 × 10⁸. Report to 2 sig figs.
What is 3.3 × 10⁸?
A car travels 45.0 km in 1.20 h. What is its speed?
What is 37.5 km/h? (3 sig figs)
How many sig figs in 0.004500
What is 4?
15.678 – 2.3 = ?
What is 13.4?
15.0 ÷ 4.8 = ?
What is 3.1? (2 sig figs)
Speed of light = 299,792,458 m/s. To 3 sig figs?
What is 3.00 × 10⁸ m/s?
A block has a mass of 12.6 g and a volume of 4.0 cm³. Find the density.
What is 3.2 g/cm³? (2 sig figs)
How many sig figs are in 6.0022xx10^23
What is 5
145.6 + 7.83 = ?
What is 153.4?
0.00456 × 3.10 = ?
What is 0.0141? (3 sig figs)
Earth’s mass = 5.972 × 10²⁴ kg. To 2 sig figs?
What is 6.0 × 10²⁴ kg?
A runner covers 100.0 m in 9.58 s. What is her average speed? Hint: speed = distance / time.
What is 10.4 m/s? (3 sig figs)
Which has more sig figs: 0.0003000 or
3.0 xx10^-4
0.003000 (4 sig figs)
3.0xx10^-4 (2 sig figs)
3.14 + 0.023 = ?
What is 3.16?
(6.022 × 10²³) ÷ (2.0 × 10³) = ?
What is 3.0 × 10²⁰? (2 sig figs)
Avogadro’s number = 6.022 × 10²³. To 5 sig figs?
What is 6.0220 × 10²³?
A force of 25.0 N is applied over 3.2 m. How much work is done? Hint Work=force*distance
What is 80. J? (2 sig figs)
True or false: All zeros are significant.
What is false
6.022 × 10²³ + 2.0 × 10²² = ?
What is 6.22 × 10²³?
(limited by least precise decimal place)
(24.0 miles) ÷ (1.50 hours) = ?
What is 16.0 mph? (3 sig figs)
A marathon is 42.195 km. Express with 4 sig figs.
What is 42.20 km?
A circuit has current 0.105 A and resistance 12. Ω. Voltage? Hint: Voltage=current*resistance.
What is 1.3 V? (2 sig figs)