N1B7TNp12

Answer to Problem 12:

Answers will vary.

1. 25 times 4 is 100, so I would take 4 times 4 which is 16%.   Another method would be to round to 5/25 which is 1/5 or 20%.
2. Round to tenths and multiply 2 times 10 which is 20%.  Another method would be to rould to 2/8 which is ¼ or 25%.
3. Round to twentieths and multiply 19 x 5 which is 95%.  Another method is to assume that since the pieces for eighteenths would be small, it is close to 100%.