Build on your learners' confidence in quick addition as they discover strategies to add tens to two-digit numbers. After reviewing counting by 10's, they discuss tactics to add multiples of 10 to other numbers. They visualize how to...

Students demonstrate place values using pumpkin seeds as a math manipulative. They use manipulatives, models, known facts, properties and relationships to explain thinking processes. They estimate the number of seeds in their pumpkin.

In this place value worksheet, students in pairs shuffle a set of place value cards and then lay them out face down on a table. Students then draw a card and place it under one of their place value cards.