Whole Numbers

What could we possibly do to make rounding more interesting for students who already get it? In this series, students consider how they might round to values other than “the nearest 10.” How, for example, do we round to the nearest 9? 7? 15?

When we’re adding and subtracting, do evens make odds into evens? Do odds make evens odd? Which one has… more power!?

Four sets of 2-digit and 3-digit addition and subtraction practice. But the unknown isn’t where you expect it to be!

Your students will use estimation strategies to figure out how many parking spots are there in the parking structure at Disneyland? And you bet I reveal the real answer!

In these math problems, the solution is already given. But another number is missing!

Ready for a tricky counting and divisibility game?

Place value is something we cover in elementary school. It seems simple, but I’d wager that very few adults really understand the topic. I sure didn’t until I worked with non-base-10 number systems in college. Your students can get a taste of this mind-boggling experience by imagining what it would be like if we didn’t have the number 9. What would each digit represent then?

How many different ways can you make this math statement true using only the digits one through nine?

How many different ways can you make this math statement true using only the digits one through nine?

Typical practice problems don’t move students up Bloom’s Taxonomy. With this framework, you’ll see kids stop and really think about how to approach multi-digit addition.

Typical practice problems don’t move students up Bloom’s Taxonomy. With this framework, you’ll see kids stop and really think about how to approach multi-digit subtraction.

Imagine a world with no hundreds place. We’d have to call it ten tens instead. But then, what would we call the thousands place? How would we read 9999? What if we added one more?

How many different ways can you make this math statement true using only the digits one through nine?

How many different ways can you make this math statement true using only the digits one through nine?

Roll three dice and combine them using any mathematical operation. But be strategic to maximize your points!

Who can get to 100 first in this simple, but delightful, math game?

Sets of multiplication and division practice problems. But the unknown isn’t where you expect it to be!

What if we played Tic-Tac-Toe with numbers and instead of three-in-a-row, we add up to 15? Well… then we’d have Number Scrabble!