Estimate the Differences

Can you subtract without solving exactly? This playsheet helps you practice estimating differences by rounding numbers before subtracting, making big math easier and quicker.
 

You’ll solve problems like 487 − 163 by rounding to 500 − 160, learning to focus on getting a close, smart answer.
 

As you estimate, you’ll sharpen your number sense, improve mental math speed, and build confidence in checking for reasonableness.