Justine has 162 red buttons, 98 blue buttons, and 284 buttons. She says she knows she has more than 500 buttons without adding. How can we explain that without adding?

I showed you how to find the answer by subtracting.

500 - 284 = 216

216 - 98 = 118

118 is more than 162, so you know that those numbers than 500.

You know that those numbers add up to more than 500.

Thank you, Ms. Sue!

You're welcome, Kylie.

Thanks for the help

55 x 55 is more than 1000

500 - 284 = 216

216 - 98 = 118

would it be by visual estimating with rounding each number to the nearest 100?

But you're still adding.

who is mr sue