Count Forward by Tens - Up to 1,000
š¦ Hop, skip, jump! The frog is taking +10 leaps on the massive number line. Watch what happens to the Tens digit every jump!
Concept
Skip counting by tens is the most useful skill for fast math. And it's easy, because the Hundreds and the Ones ALMOST never change! šÆ **The Tens Dial Pattern:** If you start at 342, and jump up by 10s... * Look at the 4 (the tens place). * Turn the dial up 1 tick! -> 5! * **342 -> 352 -> 362 -> 372**. * The 3 (hundreds) and 2 (ones) are totally frozen. Only the middle number shifts! šÆ **The Rollover Trap!** What happens at 392? * The TENS dial (9) rolls over to a 10! * That forces the HUNDREDS dial to click up! * **392 -> 402**. (The tens went to 0, the hundreds went up to 4!).
Try it
Turn the Tens Dial! **Instructions:** Skip count by 10s. Change the middle digit. Watch out for the 9 rollover! **Problem 1: 415, ___, ___** * Dial the 1 up to a 2, then a 3! * Answer: 425, ___ **Problem 2: 760, ___, ___** * Dial the 6 up! The 0 in the ones place is frozen. * Answer: 770, ___ **Problem 3: 884, ___, ___** * Uh oh, rollover! 884 -> 894 -> ? * The 890 rolls over to 900! Keep the 4! * Answer: 894, ___ **Problem 4: 981, 991, ___** * (Hint: Giant rollover into the Thousands!) * Answer: ____