What exactly does the number 97 mean? How about 454? In this lesson, students explore how two-digit numbers are made up of tens and ones. Then they use this understanding to subtract numbers within 1000.
Who doesn’t love marbles? Second graders will love solving these challenging subtraction word problems using the decompose strategy! And you'll love giving your kids the practice necessary to master this useful math concept.
Second, third and fourth graders work with larger numbers and are taught three-digit subtraction and regrouping. (Regrouping is the process of carrying the one or zero in addition and subtraction.) More complex math may be a challenge for some students, but the large mix of professionally-curated tools in the Learning Library can help kids overcome any complications they may encounter.
Tools to Triumph Three-digit Subtraction
The third grade curriculum introduces students to three-digit subtraction. The most efficient way to subtract by hand is to regroup—the process of carrying (borrowing) the one or zero from the top number if the bottom number of the equation is larger. This added layer of complexity is simple to grasp with the Learning Library’s plentitude of resources that include printable worksheets and workbooks, captivating hands-on activities, meticulous guided lessons, lesson plans and more.
While students don't start focusing on three-digit subtraction until third grade, there are a few sources in the library to introduce second graders to the concept so they can get a head start. Convenient worksheets including a check-your-work assignment and Spring-themed challenge can be printed as helpful homework assignments. A 2-minute worksheet challenges third graders' speed. Some assignments zero in on regrouping work. Other straight-forward worksheets supply teachers and parents with pre-made questions so they can save time making their own.
For self-guided work, students can play the online game Borrowing Mountain. A guided lesson provides five printable activities with varying subtraction methods for a cohesive, in-depth approach to teaching. Many other three-digit subtraction sources are available in the Learning Library to ensure young students meet their math requirements.