Practice!

Sample Problem

11 × 15 = 165

Fill in the blanks

a) 1.1 × 1.5 =

b) 11 × 0.15 =

c) 0.11 × 1.5 =

d) 0.11 × 0.15 =

Solution

1.1 × 1.5: there are 2 decimal places, so the answer changes to 1.65

11 × 0.15: there are 0 + 2 = 2 decimal places, so the answer changes to 1.65

0.11 × 1.5: there are 2 + 1 = 3 decimal places, so the answer changes to 0.165

0.11 × 0.15: there are 2 + 2 = 4 decimal places, so the answer changes to 0.0165