Skill 1G
Estimating Numbers

Choose the best estimate.

This jar has 20 gumballs. Use the number 20 as a benchmark to estimate the number in the next jar.

About how many gumballs are in this jar?

Choose the most reasonable answer.
  a. about 50 gumballs
  b. about 200 gumballs
  c. about 900 gumballs
  d. not sure