Lesson Worksheet: Adding One-Digit Numbers by Making Ten Mathematics • 1st Grade

In this worksheet, we will practice adding two one-digit numbers by first making ten.


Find an expression that has the same answer as 6+8.

  • A8+5
  • B9+4
  • C10+4
  • D10+3


Fill in the blank: 7+9=10+.


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

Let us try to find 7+8 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 7+8 is the same as 10+5 which makes 15.

Now you have a go. What is 6+9?


Ethan is adding by making 10.

Which calculation should he do first?

  • A9+1=10
  • B9+5=14

Which calculation should he do next?

  • A10+6=16
  • B10+5=15


Chloe 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?


Which addition sentence is equal to 7+9?

  • A
  • B
  • C



  • A
  • B
  • C
  • D


Sophia added 9 and 7 by making ten. What number is missing from her solution? 9+7=1610+=16


Ethan tried to solve 9+6 by using the making ten strategy, but he got the answer wrong.

His teacher circled the mistake in his answer. Help him by finding 9+6.


Anthony was asked to solve 8+7.

He wrote

Is his solution correct?

  • AYes
  • BNo

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