Students will gain fluency with adding multiples of ten in this hands-on lesson that builds number sense.

Who doesn’t like to spend money and plan parties? Students will subtract two-digit numbers as they calculate the remaining money for their party supplies. They will subtract in multiples of ten and focus on place value.

Let’s start building numbers! Just as building skyscrapers is a visual representation of mathematics, students will use the visual representation of base-ten blocks to add—or build—onto a two-digit number.

Every student can be a magician after this lesson in mentally adding and subtracting by 10. No previous magic training required!