Open Middle®
Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make the following problem true.
Ricky is building ? sets of shelves for the office. It takes him ? ? minutes to do each set of shelves. He’ll be done building the sets in ? hours.
Hint
Can you make the problem true using the digits 0 – 9 as many times as you would like?
Answer
Answers may vary. For example:
Ricky is building 8 sets of shelves for the office. It takes him 30 minutes to do each set of shelves. He’ll be done building the sets in 4 hours.
Source: Chase Orton
Ricky is building 8 sets of shelves for his office. It takes him 30 minutes to do each shelf. He’ll be done in 4 hours
4 hours
Ricky is building 7 shelves for his office. It takes 30 mins to build each shelf so 30×7 =3 hours and 30 mins.
I know this is a bit fast, but we make it up, don’t we?
Ricky is building 3 shelves for the office. It takes 10 mins to build each shelf. He’ll be done building the sets in 2/4 hours.
I used 2/4 because I already used the number 1.
Ricky is building 4 shelves. each shelf takes 30 min. he will be done in 1 hr
Ricky is building 2 sets of shelves for the office. It takes him 60 minutes to do each set of shelves. He’ll be done building the sets in 2 hours.
Nice! (exaggeration because it’s bad)