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Math · Grade 1 Math

Chapter 1: Seeing Numbers to 10

One More, One Less

Find one more or one less without recounting.

Lesson
7
Time
About 10 minutes
0 of 6 done

Step 1: Let's Learn

Read it, or press Listen and follow the words.

One more than a number is just the next number you say.

Hop along the path

On a number path, one more is one square forward. One less is one square back.

Marker6

You do not go back to 1. You already know where you are.

Why it is the next number

Adding one object moves you one step along the counting words. Those are the same move, which is why you never need to recount.

Every number sits between two

Seven has six below and eight above. Knowing both neighbours means you can move either way without starting over.

Step 2: Try It Yourself

Hop one square and say the number.

Say the answer first. Then tap One more or One less to check.

Step 3: Watch an Example

Watch a hop, then predict the next.

Watch Leo Hop

Leo has the marker on 7. He wants one more.

  1. Step 1

    He does not start at 1. He starts where the marker is: 7.

Step 4: Your Turn

Practice makes it stick.

Building a Tower

Problem 1 of 1

Leo has a tower of 6 blocks. He adds 1 more. How tall is it now?

Quick Hops

Answer from where you are. Do not count from one.

1 of 3

What is one more than 8?

2 of 3

What is one less than 5?

3 of 3

What is one more than 9?

Step 5: Quick Check

Show what you know.

Question 1 of 2

What is one more than 4?

Question 2 of 2

What is one less than 7?

What You Learned

  • One more is the next number.
  • One less is the number before.
  • You do not need to count from one.