LOS ANGELES — Audiences spent Thanksgiving with Reese Witherspoon and Vince Vaughn, whose holiday comedy “Four Christmases” took in $31.1 million to open as the top weekend movie. The film opened Wednesday to get a head start on the long weekend.

The top 20 movies at U.S. and Canadian theaters Friday through Sunday, followed by distribution studio, gross, number of theater locations, average receipts per location, total gross and number of weeks in release, as compiled Monday by Media By Numbers LLC:

1. “Four Christmases,” Warner Bros., $31,069,826, 3,310 locations, $9,387 average, $46,054,468, one week.

2. “Bolt,” Disney, $26,581,002, 3,654 locations, $7,274 average, $66,848,840, two weeks.

3. “Twilight,” Summit Entertainment, $26,344,032, 3,425 locations, $7,692 average, $119,706,509, two weeks.

4. “Quantum of Solace,” Sony, $18,833,552, 3,501 locations, $5,379 average, $141,418,534, three weeks.

5. “Australia,” Fox, $14,800,723, 2,642 locations, $5,602 average, $2,004,456, one week.

6. “Madagascar: Escape 2 Africa,” Paramount, $14,207,329, 3,709 locations, $3,831 average, $159,066,369, four weeks.

7. “Transporter 3,” Lionsgate, $12,063,452, 2,626 locations, $4,594 average, $18,230,758, one week.

8. “Role Models,” Universal, $5,191,180, 2,195 locations, $2,365 average, $57,780,820, four weeks.

9. “The Boy in the Striped Pajamas,” Miramax, $1,696,187, 582 locations, $2,914 average, $5,169,495, four weeks.

10. “Milk,” Focus, $1,453,844, 36 locations, $40,385 average, $1,941,472, one week.

11. “Slumdog Millionaire,” Fox Searchlight, $1,346,039, 49 locations, $27,470 average, $3,544,374, three weeks.

12. “Changeling,” Universal, $1,207,240, 1,010 locations, $1,195 average, $33,849,632, six weeks.

13. “High School Musical 3: Senior Year,” Disney, $1,061,628, 1,385 locations, $767 average, $88,751,254, six weeks.