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Here's a fun, interactive math game you can try out with your second graders to practice subtracting ten or one hundred from any number. Students will put their subtraction skills to the test by becoming familiar with mentally subtracting ten or one hundred from a given number 100 through 900. By the time your students complete this interactive subtraction game, they will have gained confidence and proficiency with subtracting ten or one hundred from any number!

Children will be challenged to solve a variety of subtraction problems in this second grade math lesson. Here are a few sample questions you can expect from this I Know It activity: "971 – 10 =" "Subtract 100 from 707," and "801 – 100 =" If students need a little extra help solving a subtraction problem, they can click on the "Hint" button. The hint will provide a written and/or pictorial clue that will point students in the right direction without giving away the answer. When students get an answer wrong, a detailed explanation page will appear, displaying the right answer accompanied by an easy-to-understand explanation. Students will progress through this math activity having learned from earlier mistakes.

This online subtraction activity comes equipped with several built-in features that help children make the most out of their math practice session. A speaker icon in the upper-left corner of the practice screen indicates the read-aloud feature. Students can click this button to have the question read out loud to them in a clear voice. This is a great option for ESL/ELL students and children who excel with auditory learning. A progress-tracker, opposite, shows students how many questions they have left to answer in their practice session. A score-tracker beneath that shows students how many points they have earned so far for correct answers. Every feature in the I Know It math lessons is designed with your students' math achievement in mind.

Elementary teachers, homeschool educators, and school administrators alike agree: I Know It is a fantastic supplementary math practice tool for elementary students! Used alongside a comprehensive math curriculum, I Know It online math activities make math practice fun and exciting for kids. Educators can choose from a wide variety of popular elementary math topics from kindergarten through fifth grade to help their students strengthen math skills. Every one of our engaging math practice activities is thoughtfully designed by accredited elementary math teachers to meet at least one (often more) Common Core Standard. It's easy to find and assign math practice activities in just a few clicks. Now let's see why kids can't wait to dive into math practice!

Children love practicing their math skills with the fun, educational I Know It math program. Each math activity presents as a fun, yet challenging, math game. Adorable, animated characters do a silly dance or a clever trick each time students answer a math question correctly. Plenty of positive feedback messages encourage little ones to "Keep going!" even when they make a mistake. Plus, it's fun for kids to earn math awards for their virtual trophy case every time they master a new math skill. Make no mistake—math practice is a blast with iKnowIt.com!

We hope you and your class will have a lot of fun trying out this second grade subtraction activity. Be sure to explore the hundreds of second grade math lessons in our online collection too.

Looking for a way to try out the I Know It math practice program to see if it's right for your class? We've got you covered! Sign up for our free thirty-day trial offer to try out any of the math activities on "I Know It," including this second grade subtraction game, at no cost! We're confident you and your students will love the difference interactive math practice can make. When your free trial runs out, we hope you won't hesitate to join the I Know It community as a member. This way, you and your class will continue to enjoy the benefits of online math practice for a full calendar year. We have membership options for families, individual teachers, schools, and school districts. Check out our membership information page to discover which I Know It membership is perfect for you: https://www.iknowit.com/order.html.

Your I Know It membership unlocks the amazing administrative features of our program. These tools help you maximize the benefits of online math practice for you and your class. Your administrator account will help you create a class roster for your students, assign unique usernames and passwords to all of your students, give specific lesson assignments to different students, change basic lesson settings, monitor student progress with detailed progress reports, print, download, and email student progress reports, and so much more.

Your students will log into the I Know It website using their unique login credentials. From the kid-friendly homepage, children can quickly and easily access the math practice activities you have assigned to them. If you choose to give them the option in your administrator account, children can also explore other math activities at their grade level and beyond for extra practice or an added challenge. Grade levels in the student mode of I Know It are designated with letters instead of numbers (i.e., "Level B" for second grade), making it easier for you to assign math activities based on each child's individual needs and skill level.

This interactive math lesson is classified as Level B. It may be ideal for second grade students.

2.NBT.8

Numbers and Operations in Base Ten

Students will use their understanding of place value and the properties of operations to add and subtract. Students will mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.

Subtract 10 from Any Number (Level B)

In this second grade-level math lesson, students will practice subtracting ten from any number. Questions are presented as vertical subtraction problems, horizontal subtraction problems, and subtraction word problems.

2-Digit Minus 1-Digit (Level B)

Students will practice subtracting 2-digit numbers by 1-digit numbers in this interactive math activity geared toward second grade. Questions are presented as vertical subtraction problems, horizontal subtraction problems, and subtraction word problems.