Lesson: Adding Two One-Digit Numbers by First Making Ten

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

Worksheet: Adding Two One-Digit Numbers by First Making Ten • 5 Questions

Q1:

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 ?

Q2:

Ethan is adding by making 10.

Which calculation should he do first?

Which calculation should he do next?

Q3:

Olivia added 7 and 6 by first making 10.

Now, she wants to add 8 and 7.

Which number should she write in the blue circle?

Which number should she write in the red circle?

What is 8 + 7?

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