gal711:Qns: Mr Tan was selecting children to perform in a concert. 100 children were given numbers 1 to 100. He picked the child ugh the number 3. He then skip-counted in tens to pick the other children. Write down the numbers of the other children who were selected.I was think if the answer is 13,23,33,43,53,63,73,83,93. I don't understand what they mean by skip-counted in tens. Experienced parents, please help me. ThksYou are correct. Also I found this.. hope it helps :http://www.mathsisfun.com/numbers/skip-counting.html