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Lesson Worksheet: Adding Three Numbers by Making 10 Mathematics • 1st Grade
In this worksheet, we will practice adding three one-digit numbers by first adding two of them to make 10.
We can add three numbers in any order.
Which of these is equal to the sum of 5, 9, and 1?
What is 5+9+1?
Fill in the blank: .
Add the numbers.
Find the ten frames that show the sum.
Add by making 10.
Adding 3 numbers is easy when we can make 10!
To find we can make 10 by adding 8 and 2 first.
What number is missing ?
Hint: Make ten first.