Lesson: Adding One-Digit Numbers by Making Ten Elementary School Mathematics 1st Grade • JUMPMath 2.1 • Part 1 of 2 • Assessment & Practice • US Edition • Math in Focus • Singapore Math • Grade 2 • Volume A • Common Core • Go Math! • Grade 2 • Common Core • Math Connects • Grade 2 • Volume 1 • Student Edition • enVisionmath2.0 • Grade 2 • Volume 1 • Common Core

Mathematics

In this lesson, we will learn how to add two one-digit numbers by first making ten.

Video

09:12

Q1:

Find an expression that has the same answer as .

Q2:

Fill in the blank: .

Q3:

One way to make addition easier is to use addition facts that we already know.

Let us try to find by first making 10.

We need to add 3 more to 7 to make 10. So move 3 green squares over.

Now we have the same number of squares, but there are 10 in the first ten-frame, and 5 in the second.

So is the same as which makes 15.

Now you have a go. What is ?

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