2.2.1: Practice with Significant Figures
- Page ID
- 235831
Exercise \(\PageIndex{1}\)
Tell the number of significant figures in each measurement.
(a) 5060 L
(b) 340 g
(c) 3 cm
(d) 30.04 mg
(e) 0.00440 kg
(f) 640.0 mL
- Answer
-
(a) 3
(b) 2
(c) 1
(d) 4
(e) 3
(f) 4
Exercise \(\PageIndex{1}\)
Round each number to two significant digits.
(a) 4.825
(b) 0.0568
(c) 5624.8
- Answer
-
(a) 4.8
(b) 0.057
(c) 5600
Round each number to the tens place.
(d) 118.8
(e) 49.3
(f) 3582
- Answer
-
(d) 120
(e) 50
(f) 3580
Exercise \(\PageIndex{1}\)
Provide the answer to each multiplication or division problem with correct significant digits.
(a) 3.4 X 27.8
(b) 6600/2.25
(c) 73.82 X 60.2
- Answer
-
(a) 95
(b) 2900
(c) 4440
Provide the answer to each addition or subtraction problem with correct significant digits.
(d) 4560 + 12
(e) 11.27 - 5.881
(f) 44.26 + 5.74
- Answer
-
(d) 4570
(e) 5.39
(f) 50.00
Provide the answer to each mixed operations problem with correct significant digits.
(g) 22.82 + (2.21 X 3.04)
(h) (112.52 - 64.388) X 0.23100
(i) 65.70 / (0.755 + 3.145)
- Answer
-
(g) 29.54
(h) 11.12
(i) 16.85