Ima Divvy used her calculator and multiplied a number by 20 instead of by 2. What could she now do to obtain the correct answer?
Select one option, then click Submit.
divide by 20
divide by 40
multiply by 10
multiply by 0.5
multiply by 0.1
Select an option, then submit.
Sign in or create an account to reveal answers, view the solution, and save your progress. Create a free account to unlock practice and keep track of your work.
Intermediate Mathematical Challenge 1999 (1999)
One puzzle per day. Cryptarithm, Magic Square, Summit. No sign-up required to play.
Play daily puzzle →Interactive problems and curated lessons—water pouring, magic squares, knight's tour, and more.
Browse library →See how you rank. Top solvers by problems solved correctly. Sign in to climb the ranks.
View leaderboard →Intermediate Mathematical Challenge 1999 (1999)