Original PromptCreate a practice worksheet for 2nd-grade place value and mental math. Include: 1) Identifying tens and ones in 2-digit numbers using a different visual like ten-frames or tally marks. 2) Mental math practice adding and subtracting 10 and 100 from 3-digit numbers. 3) Three word problems involving adding or subtracting 10 or 100 (e.g., 'Sam has 145 stickers. He buys 100 more. How many does he have now?').
This learning resource focuses on teaching students to identify tens and ones in two-digit numbers utilizing visual models like ten-frames and tally marks. Students will engage in guided practice to recognize the quantities and will learn to represent numbers graphically. The resource also covers mental math strategies for adding and subtracting 10 and 100 from three-digit numbers, emphasizing changes in only one digit of the number. Additionally, word problems help reinforce these skills in real-world contexts, allowing students to apply their mathematical understanding to practical situations.