Count Forward & Backward by Fives, Tens, and Hundreds
π¦ Hop, skip, or giant leap! The frog is back, but this time it can leap an entire football field at once by jumping in Hundreds!
Do this: Read the concept below, then try the quiz or activity.
Concept
Skip counting by Hundreds is actually the easiest skip counting of all.
π― The Hundreds Dial Pattern: If you start at 342, and jump up by 100s... * Look at the 3 (the Hundreds place). * Turn the dial up 1 tick! -> 4! * 342 -> 442 -> 542 -> 642. * The Tens and Ones (the "42") NEVER CHANGE! Only the first number moves!
π― Backward Jumps: If you want to subtract by 10s... just dial the middle number BACKWARD. * 875 -> 865 -> 855 -> 845.
Try it
Turn the right dial!
Instructions: Figure out if the frog is jumping by 5s, 10s, or 100s. And is it jumping forward or backward?
Problem 1: 520, ___, 720, 820 * Which dial is changing? The hundreds! It's going up! * Answer: ___
Problem 2: 480, 470, 460, ___ * The hundreds are perfectly frozen. The tens are changing. * It is going backwards! * Answer: ___
Problem 3: 155, 160, 165, ___ * The numbers end in 5, then 0, then 5. That is the secret pattern for hopping by 5! * Answer: ___
Problem 4: 905, 805, ___, 605 * Answer: ___