Mathskills4kids.com free printable estimation and rounding worksheets for 2nd Grade math
To help you reinforce estimation and rounding skills with your students, we have selected some fun free printable estimation and rounding worksheets for 2nd-grade math from Mathskills4kids.com.
These worksheets cover different topics, such as estimating sums and differences, rounding to the nearest ten, using compatible numbers, and more.
You can use these worksheets as homework assignments, review sheets, or assessment tools.
- Estimating objects to the nearest 10: In this worksheet, students will look at groups of objects and estimate how many there are by rounding to the nearest 10.
For example, if they see 23 pencils, they will write 20 as their estimate. This is a great way to introduce the concept of rounding and help students visualize what it means.
- Rounding to the nearest tens: In this worksheet, students will practice rounding two-digit numbers to the nearest tens. They will use a number line to help them find the closest multiple of 10.
For example, if they have to round 37, they will see that it is closer to 40 than to 30 on the number line. Hence, they will write 40 as their answer.
- Rounding to the nearest hundreds: In this worksheet, students will practice rounding three-digit numbers to the nearest hundreds. They will use the same strategy as before but with a different number line that shows multiples of 100.
For example, if they have to round 256, they will see that it is closer to 300 than 200 on the number line. Hence, they will write 300 as their answer.
- Estimating sums: In this worksheet, students will practice estimating the sums of two-digit numbers by rounding them first and then adding them.
For example, if they have to estimate 45 + 28, they will round 45 to 50 and 28 to 30 and then add 50 + 30 to get 80 as their estimate.
This is a useful skill for making quick calculations and checking their work.
- Estimating differences: In this worksheet, students will practice estimating the differences between two-digit numbers by rounding them first, then subtracting them.
For example, if they have to estimate 67 - 39, they will round 67 to 70 and 39 to 40 and then subtract 70 - 40 to get 30 as their estimate.
This is another useful skill for making quick calculations and checking their work.