1. Find the number of significant figures in the following values and express them in scientific notation:
a) 0.00045 s
b) 150.30 m
c) 4,000 kg
2. Round the following numbers to two decimal places:
a) 12.345
b) 0.00978
c) 98.7654
3. Round the following numbers to three significant figures:
a) 0.000789
b) 1234.567
c) 65432
4. Express the following measurements with the correct number of significant figures:
a) 7.1000 g
b) 0.0600 L
c) 120000 m
5. Round the following numbers to the nearest whole number:
a) 56.78
b) 0.499
c) 101.5
6. Find the number of significant figures in the following values:
a) 0.0708
b) 900.00
c) 7000
7. Express the following values in scientific notation with the appropriate number of significant figures:
a) 0.000123
b) 4500
c) 7890000
8. Round the following numbers to the nearest hundredth:
a) 345.678
b) 0.98765
c) 1234.5678
9. Convert the following numbers to a number with four significant figures:
a) 0.005678
b) 987654
c) 0.123456
10. Express the following measurements with three significant figures in scientific notation:
a) 0.00560
b) 900000
c) 78900