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 Video

Sample Question Videos

03:05
02:39
01:45

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.

40	41	42	43	44	45	46	47	48	49
	51	52	53	54	55	56	57	58	59
60	61	62	63	64	65	66	67	68	69

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.

1	2	3	4	5	6	7	8		10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30

Q3:

A class were asked to add 35 to 14.

Who got the correct answer?