Lesson Worksheet: Doubles Minus One Mathematics • 1st Grade
In this worksheet, we will practice adding two consecutive numbers with sums up to 20 by finding one less than a doubles fact.
Amelia tried to solve by using the doubling numbers facts, but she got the answer wrong.
Her teacher circled the mistake in her answer. Help her by finding .
Given that , find .
Complete the addition sentence.
We can use doubles facts to help us add.
What is the double of 2?
Use the doubles fact to find .
True or False: is 1 less than the double of 2.
Daniel and Madison were asked to find using doubles fact. Who got the right answer?
Pick the correct answer to complete the following.
Chloe and Liam solved as shown.
Who is right?