Significant Figures and Calculations Warmup
DO NOW: Sig Fig Calculations
1. Perform the following calculations and express the results in the correct units and with the correct rounding.
a) 22.0 m + 5.28 m + 15.5 m = ____________________________
b) 5.78 g ÷ 2.2 cm3 = ____________________________
c) 0.042 kg + 1.229 kg + 0.502 kg = ________________________
d) 140 cm x 35 cm = ____________________________
e) 170.8 mm2 + 3.5 mm2 – 28 mm2 = __________________________
f) 5.88 g ÷ 320 mL + 1.05 g/mL = ____________________________
**HINT** Round after each operation (after the division with sig figs, then after the addition with decimal places).
2. Convert the following. Show your dimensional analysis for each conversion.
a) 102.5 mL = _______________ L c) 6.5 x 10-2 mg = _______________ g
b) 64.2 km = _______________ cm d) 9.86 x 10-4 km = _______________ μm
DO NOW: SF Calculations
1. Perform the following calculations and express the results in the correct units and with the correct rounding.
a) 22.0 m + 5.28 m + 15.5 m = ____________________________
b) 5.78 g ÷ 2.2 cm3 = ____________________________
c) 0.042 kg + 1.229 kg + 0.502 kg = ________________________
d) 140 cm x 35 cm = ____________________________
e) 170.8 mm2 + 3.5 mm2 – 28 mm2 = __________________________
f) 5.88 g ÷ 320 mL + 1.05 g/mL = ____________________________
**HINT** Round after each operation (after the division with sig figs, then after the addition with decimal places).
2. Convert the following. Show your dimensional analysis for each conversion.
a) 102.5 mL = _______________ L c) 6.5 x 10-2 mg = _______________ g
b) 64.2 km = _______________ cm d) 9.86 x 10-4 km = _______________ μm
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