Lesson: Adding Two-Digit Numbers on a Hundred Chart Mathematics • 1st Grade

In this lesson, we will learn how to add two-digit numbers using a hundred chart by adding tens and then ones.

Lesson Plan

Students will be able to

use a hundred chart to add tens and then ones to a number,
choose which number to start on when adding using a hundred chart,
solve word problems by adding two-digit numbers on a hundred chart.

Lesson Video

Lesson Worksheet

Q1:

50 people are going to a party. Then, 15 more people decide to go. How many people are going to the party? Find the number by using the chart to count.

Q2:

There were 9 boys at a park. Then, 15 more boys came to the park to play. What is the total number of boys? Find the number by using the chart to count.

Q3:

A class were asked to add 35 to 14.

Who got the correct answer?