Scientific Notation
Write 56,700,000 in scientific notation.
5.67×107
How many significant figures are in 0.00450?
3
56.7+2.45=?
59.2
Convert 56.90 mm to meters.
0.05690 m
The human body temperature is 37 °C. Convert to Kelvin.
310 K
Express 0.000045 in scientific notation.
4.5×10-5
How many significant figures are in 78,900 (with no decimal point)?
3
12.4×2.0=?
24.8 → rounded to 25 (2 sf)
Convert 0.0051 dL (decaliters) to mL.
51.0 mL
A watch loses 0.12 seconds every minute. How many seconds will it lose in one day?
172.8 s/day (≈ 173 s/day)
(3.45×105 ) + (6.21x 106)
6.56×106
How many significant figures are in 109.030?
6
89.193−7.3=?
81.893 → 81.9
Convert 8.0 km to centimeters.
800,000 cm
A piece of steel carries sound at 342 miles/second. How many kilometers will it travel in 2 hours? (1 km = 0.62 miles)
3,973,548 km.
Answer: ≈ 3.97 × 106km
Multiply (6.2×103)(4.0×102)and give your answer in scientific notation.
2.48×106
Round 4578 to 3 significant figures.
4.58 × 103
(5.67×103)+(4.3×102)=?
6.10×103
Convert 541 kg to grams.
541,000 g
A block of wood has mass 10 g and dimensions 5 cm × 6 cm × 0.5 cm. What is its density in g/cm³?
0.666… g/cm3.
With appropriate sig figs (about 2 sf), Answer: 0.67 g/cm³
Divide (9.6×107) by (3.2×103)and give your answer in scientific notation.
3.0×104
A measurement reads 0.00030700 g. How many significant figures are in this number?
5
(16.83)÷(0.000307)=?
54,830 → round to 3 sf → 5.48×104
Convert 23 micrograms to hectograms.
2.3×10−7 Hg
A zebra runs 0.6 km in 0.02 hours , while a horse runs 650 m in 54 s. Which animal is faster, and by how much?
The horse is faster by about 3.7 m/s.
The horse is faster by about 13 km/h.