1.

1.9. There are 25% more new windows in my house than old
ones.

What is the ratio
of the number of new windows to the number of old ones?

1.19. I played video games at the arcade from 10:53 AM to 5:05
PM the same day.

When was I halfway
done at the arcade that day?

1.20. What is the largest prime factor of 77,000,000?

1.28. If the radius plus the circumference of a certain circle
is 6? + 3,

how long is the diameter
of the circle?

1.38. Of 200 bears, 150 sing and 60 dance. Of those who
dance, 40 sing.

How many bears neither
sing nor dance?

1.39. What is 1% of 1%?

1.40. What is the hundreds' digit of 1 + 2 + 3 + ... + 998 + 999 + 1000?

**Source: The Math League**
** http://www.mathleague.com**

Don Braffitt