This PowerPoint slideshow has 40 questions and their answers on skip-counting: students count forwards and backwards up to 1000: 30, 35, 40, ___85, 80, 75, ___ 150, 160, 170, ___ 90, 80, 70, ___ 670, 770, 870, ___ 903, 803, 703, ___Fully-animated. Just click and go. Five minutes long for a quick math warm-up of skip-counting by fives, tens and hundreds. Students have five seconds to solve a problem, and then the answer pops up. Immediate feedback! Take a look at the Preview to see som