6. Calculate the answers to the appropriate number ofsignificant figures.

a. 24.7 × 1.8 =

b. 45.65 × 0.25 =

c. 81.04 × 0.010 =

d. 6.47 × 63.7 =

e. 3.678 / 64.1 =

7. Round off the numbers to the indicated significantfigures.

a. 230 to one sig fig

b. 2345 to three sig fig

c. 789000 to two sig fig

d. 6700 to one sig fig

8. Convert the following numbers to scientific notation usingsignificant figures.

a. 2340000000

b. 0.00034

c. 123000000

d. 0.000160