# Base 10 and standard Subtraction (no regrouping) - Lesson for Grade 1, Chapter - Addition and Subtraction - less than 20

In the lesson "Base 10 and Standard Subtraction (no regrouping)," first-grade students will embark on a foundational journey into the realm of subtraction within the "Foundations in Operations Within 100" unit. This lesson is pivotal as it lays the groundwork for understanding how numbers work together in subtraction, focusing on numbers less than 20, and introduces students to the Base 10 system, a cornerstone of our numerical world.

Students will engage in various activities designed to bolster their subtraction skills. Starting with the "Count Back to Subtract Subtraction Worksheet," they will practice the intuitive method of counting backwards to find differences. This builds a practical understanding of subtraction as reducing quantities.

The "Matching Subtraction Equations to Base 10 Models Worksheet" will introduce students to the visual representation of numbers using Base 10 blocks. This method reinforces the concept of place value and how it's applied in subtraction, making abstract concepts tangible.

Through the "Solving Subtraction Equations Worksheet," students will apply what they've learned by tackling subtraction problems directly, enhancing their computational skills.

Estimated classroom time: 12 min
Chapter: Addition and Subtraction - less than 20
Unit: Foundations in Operations Within 100
Click on any activity below to start learning.
1st
3:00 min
Count Back to Subtract Substraction Worksheet
worksheet
2nd
3:00 min
Matching Subtraction Equations To Base 10 Models Worksheet
worksheet
3rd
3:00 min
Solving Subtraction Equations Worksheet
worksheet
4th
3:00 min
Subtracting With Base 10 Blocks Worksheet
worksheet
Share your lesson with students by clicking:
• ### Activity 1 / Count Back to Subtract Substraction Worksheet

If you’re looking for yet another strategy to teach your child to subtract, this Count Back to Subtract worksheet features a number line to offer your child a meaningful visual way to master subtraction!
Simply use the number line to count back to help your child gain a deeper understanding of subtraction!

• ### Activity 2 / Matching Subtraction Equations To Base 10 Models Worksheet

Help your student draw a line to the equation that matches the subtraction shown with the base 10 blocks. This worksheet requires that your young ones have good subtraction skills, good counting skills, and good problem solving skills. The three mathematical problems here are easy enough for your students to solve; all they need is proper guidance to complete the tracing sheet. Hold their hands as they trace a line to the equation that matches the subtraction shown in base 10.

• ### Activity 3 / Solving Subtraction Equations Worksheet

Help your kids complete this simple mathematical worksheet and stimulate their brains. The colourful printout might have a mathematical problem that your kid could be unenthusiastic about, but they will see how simple the problem really is, and understand solving subtractions better. Help them solve the subtraction problems in the tracing sheet by drawing lines through the number of base 10 blocks being taken away. Ask them to draw a line between the subtraction problem and the correct answer.

• ### Activity 4 / Subtracting With Base 10 Blocks Worksheet

After subtracting or crossing out the number on the bottom of the subtraction problem, ask your child to count how many longs and cubes are left, and then help them check the correct answer. This worksheet might seem tricky to your child at first glance, but it is a simple mathematical problem. And, if your child can count well enough, they should have little problems completing this exercise. Help them count the cubes and check the correct answer.