top of page

Lesson Plan Template

  • Grade

  • Subject

  • Section

First

Math

​

  • Competency

Addition, two digits (1)

  • Aligned Standards

Number and Operations in Base Ten

  • Strand

1.NBT.C.4

  • Vocabulary

Multiple of ten: A number that can be divided by ten without a remainder (e.g., 10, 20, 30, etc.).

One-digit number: Any number from 0 to 9.

​

Add a Multiple of Ten and a One-Digit Number

Prerequisite Skill

Use Models to Add a Multiple of Ten and a One-Digit Number

Materials and Preparation

  • Whiteboard and markers
  • TeachTastic Worksheet Pack for "Adding a Multiple of Ten and a One-Digit Number"
  • Number cards or manipulatives (optional)

Learning Objectives

  • Students will understand how to add a multiple of ten and a one-digit number.
  • Students will demonstrate the ability to solve addition problems involving multiples of ten and one-digit numbers.
  • Students will develop confidence in their addition skills through practice and reinforcement.

Introduction

Start the lesson by asking students if they know what a multiple of ten is. Explain that multiples of ten are numbers like 10, 20, 30, and so on. Next, introduce the problem "What is 90 + 4?" and ask students if they can solve it. Demonstrate that adding a one-digit number to a multiple of ten involves simply adding the one-digit number to the tens.

Explicit Instruction/Teacher modeling

Write the problem "80 + 7" on the board. Explain that to solve this problem, we start with the multiple of ten (80) and add the one-digit number (7). Show step-by-step how to add 7 to 80 by first understanding that 80 consists of 8 tens, and adding 7 to it changes the number of ones without affecting the tens place significantly.

Related Products

No Products are Available

Guided Practice

Hand out the TeachTastic Worksheet Pack and work through a few problems together as a class. Examples might include:

  • 40 + 5
  • 60 + 3
  • 70 + 8

Discuss each problem and ensure students understand each step of the addition process. Use number cards or manipulatives if necessary to help visualize the problems.

Independent Practice

Assign students to complete additional problems from the TeachTastic Worksheet Pack independently. This practice will allow them to apply what they’ve learned and identify any areas where they may need further clarification. Problems might include:

  • 20 + 6
  • 50 + 4
  • 30 + 9

Differentiation

Support

  • Offer additional practice with manipulatives for students who need it.
  • Provide step-by-step written guides for solving word problems.
  • Pair students who are struggling with a peer tutor for additional support.

Extension

  • Challenge students with larger multiples of ten (e.g., 120 + 5).
  • Include problems that involve adding multiple one-digit numbers to a multiple of ten (e.g., 30 + 4 + 3).
  • Introduce simple word problems that incorporate adding multiples of ten and one-digit numbers.

Assessment

Use specific assessment worksheets from the TeachTastic Worksheet Pack to evaluate students’ mastery of the lesson objectives. Include problems that test their ability to add multiples of ten and one-digit numbers accurately.

Review and closing

Summarize the key points of the lesson: adding a multiple of ten and a one-digit number involves adding the one-digit number to the tens. Address any common misconceptions and allow students to ask questions. Encourage students to practice more if they feel uncertain.

Misconceptions

  • Students may think they need to change the tens place when adding a one-digit number. Clarify that only the ones place changes.
  • Students might add tens incorrectly. Reinforce the idea that adding a one-digit number to a multiple of ten doesn't affect the tens place.
  • Some students may struggle with carrying over. Provide extra practice problems that involve carrying over to strengthen their understanding.
bottom of page