Practice!

Sample Problem

If 7 × 105 = 735, without using multiplication, find

8 × 105 =

9 × 105 =

Solution

8 × 105 = 7 × 105 + 105 = 735 + 105 = 840

9 × 105 = 8 × 105 + 105 = 840 + 105 = 945