Subtraction fluency within 20 is the focus of this guided lesson for second graders. Kids will be tasked with mental subtraction, as well as with using manipulatives and drawings to add and subtract larger numbers. Word problems will help to round out the lesson, as kids follow the step-by-step method of solving subtraction word problems. For even more practice in this skill, check out our subtraction worksheets.

The ability to compare numbers with ease is crucial to understanding the relationship between numbers, also called number sense. The abstract nature of number sense makes extra practice crucial. This guided lesson helps kindergarteners to learn this skill with targeted instruction and engaging exercises. Further opportunities for practice can be found in the comparing numbers worksheets suggested to go along with this lesson.

Understanding how our ten number system works enables students to see interesting and useful patterns and relationships in these math activities. These patterns allow students to develop more efficient mental math strategies when multiplying by multiples of 10 or 100. Students will also review rounding and apply this skill to larger numbers - up to 100,000’s place.