Steve Huey from
AllMusic called the song "irresistible", adding, "actually, the
miggeda-miggeda-mack bit proves they're not bad rappers".
J.D. Considine from
The Baltimore Sun felt "it's the musical maturity they show that makes them seem dope beyond their years", noting the "
reggae-inflected cadences" of "Jump".
Larry Flick from
Billboard magazine wrote that this "energetic
pop/hip-hopper showcases fast-talking, baby-voiced male rappers that may initially draw comparisons to
Another Bad Creation." He also described the song as "radio-friendly" and "melodic". Clark and DeVaney from
Cashbox commented, "For such young guys, they deliver some pretty impressive lyrics and have a slammin' music track on their debut single. You can be sure to hear more from this group in the near future." James Bernard from
Entertainment Weekly noted, "Play the group’s hyperactive platinum single ”Jump” at any party and watch the floors quake. To their credit, the two rappers don’t rely on their production team’s musical prowess. Smith (who calls himself Daddy Mack) and Kelly (Mack Daddy) grip their microphones with so much confidence that if they didn’t sound so youthful, you might forget they’re just barely out of grade school." Dave Sholin from the
Gavin Report stated, "These two twelve year-olds from
Atlanta are about to bounce in only one direction—to the top of the chart." Bruce Britt from
Los Angeles Daily News described the song as "
bubble gum rap". Dennis Hunt from
Los Angeles Times said it "is high quality--like just about everything on the
album." Another
Los Angeles Times editor,
Robert Hilburn, wrote, "A classic slice of teen exuberance, also dressed up in today’s dance-minded
hip-hop sparkle." Pan-European magazine
Music & Media remarked that "these 12-year-old boys have formed a real rap posse. They sound as determined as
Michael Jackson at that age." Alan Jones from
Music Week stated that "against an unusually fresh and eclectic backdrop, the two 13-year-old rappers make a highly infectious noise incorporating some
ragga influences". A reviewer from
People Magazine felt that "their best trick is inserting catchily melodic refrains in the middle of their free-stylin' raps. That should help them kross over to pop. And cheek the speed at which they spin out their ragamuffin rhymes on "Jump" and "
Warm It Up". Obviously the tongue matures before the rest of the body."
James Hamilton from the
Record Mirror Dance Update deemed it a "jaunty "
jump, jump" prodded jiggly lurcher". Hannah Ford from
Select wrote that it is "a beautiful hip hop track that gets your goose bumps quacking. It's
Public Enemy's wailing sax break with
Naughty By Nature's b-line." Bunny Sawyer from
Smash Hits gave it five out of five, commenting, "Their tune's a work of hip-hop genius that comes complete with easy-peasy dance steps to make us all look as cross as them." An editor of
Sunday Tribune described it as a "infectious rallying cry". ==Music video==